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The 1984 season’s official transaction log: 463 trades, signings and releases involving major-league clubs, listed newest first.
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| Dec 31, 1984 | Signed as free agent | Dennis Burtt | — | Minnesota Twins | Free agent signing |
| Dec 28, 1984 | Signed as free agent | John Pacella | — | Detroit Tigers | Free agent signing |
| Dec 28, 1984 | Signed as free agent | Mark Ryal | — | Chicago White Sox | Free agent signing |
| Dec 27, 1984 | Signed as free agent | Dave Rozema | — | Texas Rangers | Free agent signing |
| Dec 27, 1984 | Signed as free agent | Ed Whitson | — | New York Yankees | Free agent signing |
| Dec 25, 1984 | Signed as free agent | Ricky Adams | — | San Francisco Giants | Free agent signing |
| Dec 25, 1984 | Signed as free agent | Mark Gilbert | — | Chicago White Sox | Free agent signing |
| Dec 25, 1984 | Signed as free agent | Mike Griffin | — | Kansas City Royals | Free agent signing |
| Dec 24, 1984 | Signed as free agent | Bruce Bochte | — | Oakland Athletics | Free agent signing |
| Dec 23, 1984 | Signed as free agent | Johnny Grubb | — | Detroit Tigers | Free agent signing |
| Dec 22, 1984 | Signed as free agent | Vern Ruhle | — | Cleveland Indians | Free agent signing |
| Dec 20, 1984 | Signed as free agent | Burt Hooton | — | Texas Rangers | Free agent signing |
| Dec 20, 1984 | Signed as free agent | Greg Pryor | — | Kansas City Royals | Free agent signing |
| Dec 20, 1984 | Trade | Unnamed | New York Yankees | Pittsburgh Pirates | $ |
| Dec 20, 1984 | Trade | Dale Berra | Pittsburgh Pirates | New York Yankees | Trade |
| Dec 20, 1984 | Trade | Alfonso Pulido | Pittsburgh Pirates | New York Yankees | Trade |
| Dec 20, 1984 | Trade | Jay Buhner | Pittsburgh Pirates | New York Yankees | Trade |
| Dec 20, 1984 | Trade | Steve Kemp | New York Yankees | Pittsburgh Pirates | Trade |
| Dec 20, 1984 | Trade | Tim Foli | New York Yankees | Pittsburgh Pirates | Trade |
| Dec 19, 1984 | Signed as free agent | Dave Kingman | — | Oakland Athletics | Free agent signing |
| Dec 19, 1984 | Signed as free agent | Luis Pujols | — | Texas Rangers | Free agent signing |
| Dec 17, 1984 | Released | Ron Jackson | Baltimore Orioles | — | Release |
| Dec 15, 1984 | Signed | Dave Pavlas | — | Chicago Cubs | Amateur free agent signing |
| Dec 14, 1984 | Signed as free agent | Rick Sutcliffe | — | Chicago Cubs | Free agent signing |
| Dec 13, 1984 | Signed as free agent | Don Aase | — | Baltimore Orioles | Free agent signing |
| Dec 13, 1984 | Signed as free agent | Ed Hearn | — | New York Mets | Free agent signing |
| Dec 13, 1984 | Signed as free agent | Lary Sorensen | — | Chicago Cubs | Free agent signing |
| Dec 12, 1984 | Released | Les Straker | Oakland Athletics | — | Release |
| Dec 12, 1984 | Trade | George Hendrick | St. Louis Cardinals | Pittsburgh Pirates | Trade |
| Dec 12, 1984 | Trade | Steve Barnard | St. Louis Cardinals | Pittsburgh Pirates | Trade |
| Dec 12, 1984 | Trade | John Tudor | Pittsburgh Pirates | St. Louis Cardinals | Trade |
| Dec 12, 1984 | Trade | Brian Harper | Pittsburgh Pirates | St. Louis Cardinals | Trade |
| Dec 11, 1984 | Signed as free agent | Fred Lynn | — | Baltimore Orioles | Free agent signing |
| Dec 11, 1984 | Signed as free agent | Matt Sinatro | — | Atlanta Braves | Free agent signing |
| Dec 11, 1984 | Trade | Tim Henry | Texas Rangers | Chicago Cubs | Trade |
| Dec 11, 1984 | Trade | Jorge Gomez | Texas Rangers | Chicago Cubs | Trade |
| Dec 10, 1984 | Released | Steve Christmas | Chicago White Sox | — | Release |
| Dec 10, 1984 | Released | John Pacella | Baltimore Orioles | — | Release |
| Dec 10, 1984 | Released | Orlando Sanchez | Baltimore Orioles | — | Release |
| Dec 10, 1984 | Trade | Gary Carter | Montreal Expos | New York Mets | Trade |
| Dec 10, 1984 | Trade | Hubie Brooks | New York Mets | Montreal Expos | Trade |
| Dec 10, 1984 | Trade | Mike Fitzgerald | New York Mets | Montreal Expos | Trade |
| Dec 10, 1984 | Trade | Herm Winningham | New York Mets | Montreal Expos | Trade |
| Dec 10, 1984 | Trade | Floyd Youmans | New York Mets | Montreal Expos | Trade |
| Dec 8, 1984 | Signed as free agent | Al Woods | — | Minnesota Twins | Free agent signing |
| Dec 8, 1984 | Trade | Unnamed | Toronto Blue Jays | Oakland Athletics | $ |
| Dec 8, 1984 | Trade | Alfredo Griffin | Toronto Blue Jays | Oakland Athletics | Trade |
| Dec 8, 1984 | Trade | Dave Collins | Toronto Blue Jays | Oakland Athletics | Trade |
| Dec 8, 1984 | Trade | Bill Caudill | Oakland Athletics | Toronto Blue Jays | Trade |
| Dec 7, 1984 | Signed as free agent | Lee Lacy | — | Baltimore Orioles | Free agent signing |
| Dec 7, 1984 | Signed as free agent | Bruce Sutter | — | Atlanta Braves | Free agent signing |
| Dec 7, 1984 | Signed as free agent | Steve Trout | — | Chicago Cubs | Free agent signing |
| Dec 7, 1984 | Trade | Bert Roberge | Chicago White Sox | Montreal Expos | Trade |
| Dec 7, 1984 | Trade | Bryan Little | Montreal Expos | Chicago White Sox | Trade |
| Dec 7, 1984 | Trade | Bob James | Montreal Expos | Chicago White Sox | Trade |
| Dec 7, 1984 | Trade | Vance Law | Chicago White Sox | Montreal Expos | Trade |
| Dec 7, 1984 | Trade | Floyd Chiffer | San Diego Padres | Minnesota Twins | Trade |
| Dec 7, 1984 | Trade | Ray Smith | Minnesota Twins | San Diego Padres | Trade |
| Dec 7, 1984 | Trade | Walt Terrell | New York Mets | Detroit Tigers | Trade |
| Dec 7, 1984 | Trade | Howard Johnson | Detroit Tigers | New York Mets | Trade |
| Dec 7, 1984 | Trade | Ray Burris | Oakland Athletics | Milwaukee Brewers | Trade |
| Dec 7, 1984 | Trade | Eric Barry | Oakland Athletics | Milwaukee Brewers | Trade |
| Dec 7, 1984 | Trade | Don Sutton | Milwaukee Brewers | Oakland Athletics | Trade |
| Dec 6, 1984 | Trade | LaMarr Hoyt | Chicago White Sox | San Diego Padres | Trade |
| Dec 6, 1984 | Trade | Kevin Kristan | Chicago White Sox | San Diego Padres | Trade |
| Dec 6, 1984 | Trade | Todd Simmons | Chicago White Sox | San Diego Padres | Trade |
| Dec 6, 1984 | Trade | Ozzie Guillen | San Diego Padres | Chicago White Sox | Trade |
| Dec 6, 1984 | Trade | Tim Lollar | San Diego Padres | Chicago White Sox | Trade |
| Dec 6, 1984 | Trade | Bill Long | San Diego Padres | Chicago White Sox | Trade |
| Dec 6, 1984 | Trade | Luis Salazar | San Diego Padres | Chicago White Sox | Trade |
| Dec 5, 1984 | Released | Luis Aponte | Cleveland Indians | — | Release |
| Dec 5, 1984 | Signed as free agent | Cliff Johnson | — | Texas Rangers | Free agent signing |
| Dec 5, 1984 | Trade | Unnamed | Oakland Athletics | New York Yankees | $ |
| Dec 5, 1984 | Trade | Rickey Henderson | Oakland Athletics | New York Yankees | Trade |
| Dec 5, 1984 | Trade | Bert Bradley | Oakland Athletics | New York Yankees | Trade |
| Dec 5, 1984 | Trade | Stan Javier | New York Yankees | Oakland Athletics | Trade |
| Dec 5, 1984 | Trade | Jay Howell | New York Yankees | Oakland Athletics | Trade |
| Dec 5, 1984 | Trade | Jose Rijo | New York Yankees | Oakland Athletics | Trade |
| Dec 5, 1984 | Trade | Eric Plunk | New York Yankees | Oakland Athletics | Trade |
| Dec 5, 1984 | Trade | Tim Birtsas | New York Yankees | Oakland Athletics | Trade |
| Dec 5, 1984 | Trade | Brian Fisher | Atlanta Braves | New York Yankees | Trade |
| Dec 5, 1984 | Trade | Rick Cerone | New York Yankees | Atlanta Braves | Trade |
| Dec 4, 1984 | Signed as free agent | Marv Foley | — | Detroit Tigers | Free agent signing |
| Dec 4, 1984 | Signed as free agent | Andre Thornton | — | Cleveland Indians | Free agent signing |
| Dec 4, 1984 | Trade | Ray Fontenot | New York Yankees | Chicago Cubs | Trade |
| Dec 4, 1984 | Trade | Brian Dayett | New York Yankees | Chicago Cubs | Trade |
| Dec 4, 1984 | Trade | Porfi Altamirano | Chicago Cubs | New York Yankees | Trade |
| Dec 4, 1984 | Trade | Rich Bordi | Chicago Cubs | New York Yankees | Trade |
| Dec 4, 1984 | Trade | Henry Cotto | Chicago Cubs | New York Yankees | Trade |
| Dec 4, 1984 | Trade | Ron Hassey | Chicago Cubs | New York Yankees | Trade |
| Dec 2, 1984 | Signed as free agent | Tom Brennan | — | Los Angeles Dodgers | Free agent signing |
| Nov 30, 1984 | Signed as free agent | Mark Funderburk | — | Minnesota Twins | Free agent signing |
| Nov 28, 1984 | Signed as free agent | Dennis Eckersley | — | Chicago Cubs | Free agent signing |
| Nov 26, 1984 | Released | Marv Foley | Texas Rangers | — | Release |
| Nov 26, 1984 | Signed | Carlos Quintana | — | Boston Red Sox | Amateur free agent signing |
| Nov 21, 1984 | Signed as free agent | Tom Filer | — | Toronto Blue Jays | Free agent signing |
| Nov 20, 1984 | Signed as free agent | Mike Woodard | — | San Francisco Giants | Free agent signing |
| Nov 14, 1984 | Signed | Larry Walker | — | Montreal Expos | Amateur free agent signing |
| Nov 13, 1984 | Released | Rufino Linares | Atlanta Braves | — | Release |
| Nov 13, 1984 | Signed as free agent | Mike Martin | — | Milwaukee Brewers | Free agent signing |
| Nov 12, 1984 | Signed as free agent | Kelly Paris | — | Baltimore Orioles | Free agent signing |
| Nov 12, 1984 | Signed as free agent | Al Pedrique | — | New York Mets | Free agent signing |
| Nov 9, 1984 | Released | Steve Fireovid | Philadelphia Phillies | — | Release |
| Nov 9, 1984 | Signed as free agent | Paul Gibson | — | Detroit Tigers | Free agent signing |
| Nov 9, 1984 | Released | Renie Martin | Philadelphia Phillies | — | Release |
| Nov 9, 1984 | Released | Dave Von Ohlen | St. Louis Cardinals | — | Release |
| Nov 9, 1984 | Signed as free agent | Chico Walker | — | Chicago Cubs | Free agent signing |
| Nov 7, 1984 | Released | Ellis Valentine | California Angels | — | Release |
| Nov 7, 1984 | Trade | Chris Welsh | Montreal Expos | Texas Rangers | Trade |
| Nov 7, 1984 | Trade | Dave Hostetler | Texas Rangers | Montreal Expos | Trade |
| Nov 6, 1984 | Released | Keith Comstock | Minnesota Twins | — | Release |
| Nov 5, 1984 | Released | Matt Keough | New York Yankees | — | Release |
| Nov 5, 1984 | Released | Bill Nahorodny | Seattle Mariners | — | Release |
| Nov 5, 1984 | Released | Joe Pittman | San Francisco Giants | — | Release |
| Nov 5, 1984 | Released | Guy Sularz | San Francisco Giants | — | Release |
| Nov 1, 1984 | Released | Eddie Miller | San Diego Padres | — | Release |
| Nov 1, 1984 | Signed | Eddie Zambrano | — | Boston Red Sox | Amateur free agent signing |
| Oct 31, 1984 | Released | Ron Hodges | New York Mets | — | Release |
| Oct 31, 1984 | Released | Steve Mura | Philadelphia Phillies | — | Release |
| Oct 31, 1984 | Trade | Keefe Cato | Cincinnati Reds | San Diego Padres | Trade |
| Oct 31, 1984 | Trade | Darren Burroughs | San Diego Padres | Cincinnati Reds | Trade |
| Oct 29, 1984 | Released | Joey McLaughlin | Texas Rangers | — | Release |
| Oct 22, 1984 | Released | Garry Hancock | Oakland Athletics | — | Release |
| Oct 22, 1984 | Signed as free agent | Brian Holton | — | Los Angeles Dodgers | Free agent signing |
| Oct 22, 1984 | Trade | Carson Carroll | Minnesota Twins | Seattle Mariners | Trade |
| Oct 20, 1984 | Signed | Ron Jones | — | Philadelphia Phillies | Amateur free agent signing |
| Oct 19, 1984 | Released | Guy Hoffman | Chicago White Sox | — | Release |
| Oct 19, 1984 | Released | Jeff Jones | Oakland Athletics | — | Release |
| Oct 19, 1984 | Released | Casey Parsons | Chicago White Sox | — | Release |
| Oct 17, 1984 | Released | Albert Williams | Minnesota Twins | — | Release |
| Oct 16, 1984 | Released | Lary Sorensen | Oakland Athletics | — | Release |
| Oct 15, 1984 | Released | Steve Comer | Cleveland Indians | — | Release |
| Oct 15, 1984 | Released | Broderick Perkins | Cleveland Indians | — | Release |
| Oct 15, 1984 | Released | Jamie Quirk | Cleveland Indians | — | Release |
| Oct 10, 1984 | Released | Bucky Dent | Kansas City Royals | — | Release |
| Oct 10, 1984 | Signed | Carlos Hernandez | — | Los Angeles Dodgers | Amateur free agent signing |
| Oct 10, 1984 | Released | Rafael Landestoy | Los Angeles Dodgers | — | Release |
| Oct 10, 1984 | Released | Leon Roberts | Kansas City Royals | — | Release |
| Oct 2, 1984 | Released | Tom Underwood | Baltimore Orioles | — | Release |
| Oct 2, 1984 | Trade | Jay Pettibone | Minnesota Twins | St. Louis Cardinals | Trade |
| Oct 2, 1984 | Trade | Jim Adduci | St. Louis Cardinals | Milwaukee Brewers | Trade |
| Oct 2, 1984 | Trade | Paul Householder | St. Louis Cardinals | Milwaukee Brewers | Trade |
| Oct 2, 1984 | Trade | Rich Buonantony | Milwaukee Brewers | St. Louis Cardinals | Trade |
| Oct 2, 1984 | Trade | Jim Koontz | Milwaukee Brewers | St. Louis Cardinals | Trade |
| Oct 2, 1984 | Trade | Ron Koenigsfeld | Milwaukee Brewers | St. Louis Cardinals | Trade |
| Oct 1, 1984 | Released | Roy Howell | Milwaukee Brewers | — | Release |
| Oct 1, 1984 | Released | Tony Scott | Montreal Expos | — | Release |
| Sep 30, 1984 | Released | Jerry Martin | New York Mets | — | Release |
| Sep 26, 1984 | Signed | Vince Horsman | — | Toronto Blue Jays | Amateur free agent signing |
| Sep 10, 1984 | Trade | Mitch Cook | New York Mets | Houston Astros | Trade |
| Sep 9, 1984 | Released | Jay Johnstone | Chicago Cubs | — | Release |
| Sep 9, 1984 | Trade | Paul Householder | Cincinnati Reds | St. Louis Cardinals | Trade |
| Sep 9, 1984 | Trade | John Stuper | St. Louis Cardinals | Cincinnati Reds | Trade |
| Sep 7, 1984 | Trade | Mike Trujillo | Chicago White Sox | San Francisco Giants | Trade |
| Sep 7, 1984 | Trade | Pat Adams | Chicago White Sox | San Francisco Giants | Trade |
| Sep 6, 1984 | Signed | Keith Miller | — | New York Mets | Amateur free agent signing |
| Sep 4, 1984 | Released | Mark Ryal | Kansas City Royals | — | Release |
| Sep 4, 1984 | Released | Al Woods | Toronto Blue Jays | — | Release |
| Sep 1, 1984 | Signed | Juan Bell | — | Los Angeles Dodgers | Amateur free agent signing |
| Sep 1, 1984 | Signed | William Brennan | — | Los Angeles Dodgers | Amateur free agent signing |
| Sep 1, 1984 | Signed | Ramon Martinez | — | Los Angeles Dodgers | Amateur free agent signing |
| Sep 1, 1984 | Trade | Carl Willis | Detroit Tigers | Cincinnati Reds | Trade |
| Sep 1, 1984 | Trade | Luis Pujols | Houston Astros | Kansas City Royals | Trade |
| Sep 1, 1984 | Trade | James Miner | Kansas City Royals | Houston Astros | Trade |
| Aug 31, 1984 | Released | Juan Eichelberger | Milwaukee Brewers | — | Release |
| Aug 31, 1984 | Trade | Davey Lopes | Oakland Athletics | Chicago Cubs | Trade |
| Aug 31, 1984 | Trade | Gerald Young | New York Mets | Houston Astros | Trade |
| Aug 31, 1984 | Trade | Manuel Lee | New York Mets | Houston Astros | Trade |
| Aug 31, 1984 | Trade | Tom O'Malley | San Francisco Giants | Chicago White Sox | Trade |
| Aug 30, 1984 | Trade | Renie Martin | San Francisco Giants | Philadelphia Phillies | Trade |
| Aug 29, 1984 | Trade | Pat Putnam | Seattle Mariners | Minnesota Twins | Trade |
| Aug 28, 1984 | Signed | Jeff Gardner | — | New York Mets | Amateur free agent signing |
| Aug 28, 1984 | Trade | Ray Knight | Houston Astros | New York Mets | Trade |
| Aug 27, 1984 | Trade | Unnamed | Detroit Tigers | Cincinnati Reds | $ |
| Aug 27, 1984 | Trade | Bill Scherrer | Cincinnati Reds | Detroit Tigers | Trade |
| Aug 23, 1984 | Signed | Domingo Martinez | — | Toronto Blue Jays | Amateur free agent signing |
| Aug 22, 1984 | Signed | Bernard Gilkey | — | St. Louis Cardinals | Amateur free agent signing |
| Aug 20, 1984 | Signed | Bryan Harvey | — | California Angels | Amateur free agent signing |
| Aug 20, 1984 | Trade | Al Oliver | San Francisco Giants | Philadelphia Phillies | Trade |
| Aug 20, 1984 | Trade | Kelly Downs | Philadelphia Phillies | San Francisco Giants | Trade |
| Aug 20, 1984 | Trade | George Riley | Philadelphia Phillies | San Francisco Giants | Trade |
| Aug 19, 1984 | Trade | Unnamed | Minnesota Twins | St. Louis Cardinals | $ |
| Aug 19, 1984 | Trade | Chris Speier | St. Louis Cardinals | Minnesota Twins | Trade |
| Aug 16, 1984 | Signed as free agent | Bucky Dent | — | Kansas City Royals | Free agent signing |
| Aug 16, 1984 | Trade | Tom Lawless | Cincinnati Reds | Montreal Expos | Trade |
| Aug 16, 1984 | Trade | Pete Rose | Montreal Expos | Cincinnati Reds | Trade |
| Aug 14, 1984 | Released | Glenn Abbott | Detroit Tigers | — | Release |
| Aug 14, 1984 | Signed as free agent | Ron Jackson | — | Baltimore Orioles | Free agent signing |
| Aug 13, 1984 | Trade | Doug Drabek | Chicago White Sox | New York Yankees | Trade |
| Aug 13, 1984 | Trade | Kevin Hickey | Chicago White Sox | New York Yankees | Trade |
| Aug 9, 1984 | Signed | Geronimo Pena | — | St. Louis Cardinals | Amateur free agent signing |
| Aug 9, 1984 | Released | Mike Torrez | Oakland Athletics | — | Release |
| Aug 8, 1984 | Signed as free agent | Jim Kern | — | Milwaukee Brewers | Free agent signing |
| Aug 5, 1984 | Released | Amos Otis | Pittsburgh Pirates | — | Release |
| Aug 4, 1984 | Signed as free agent | Ty Van Burkleo | — | California Angels | Free agent signing |
| Aug 2, 1984 | Released | Ron Jackson | California Angels | — | Release |
| Aug 1, 1984 | Signed as free agent | Eddie Miller | — | San Diego Padres | Free agent signing |
| Jul 27, 1984 | Released | Jim Kern | Philadelphia Phillies | — | Release |
| Jul 26, 1984 | Trade | Andy McGaffigan | Montreal Expos | Cincinnati Reds | Trade |
| Jul 26, 1984 | Trade | Jim Jefferson | Montreal Expos | Cincinnati Reds | Trade |
| Jul 26, 1984 | Trade | Dan Driessen | Cincinnati Reds | Montreal Expos | Trade |
| Jul 20, 1984 | Trade | Al Newman | San Diego Padres | Montreal Expos | Trade |
| Jul 20, 1984 | Trade | Greg Harris | Montreal Expos | San Diego Padres | Trade |
| Jul 18, 1984 | Signed as free agent | Mike York | — | Chicago White Sox | Free agent signing |
| Jul 18, 1984 | Trade | Roy Smalley | New York Yankees | Chicago White Sox | Trade |
| Jul 15, 1984 | Trade | Chuck Rainey | Chicago Cubs | Oakland Athletics | Trade |
| Jul 10, 1984 | Signed | Heathcliff Slocumb | — | New York Mets | Amateur free agent signing |
| Jul 9, 1984 | Released | Bucky Dent | New York Yankees | — | Release |
| Jul 4, 1984 | Trade | Scott Loucks | Houston Astros | Montreal Expos | Trade |
| Jul 4, 1984 | Trade | Brad Mills | Montreal Expos | Houston Astros | Trade |
| Jul 3, 1984 | Released | Danny Boone | Milwaukee Brewers | — | Release |
| Jul 3, 1984 | Signed as free agent | Mike Torrez | — | Oakland Athletics | Free agent signing |
| Jul 2, 1984 | Released | Chuck Hensley | Milwaukee Brewers | — | Release |
| Jul 2, 1984 | Trade | Dickie Noles | Chicago Cubs | Texas Rangers | Trade |
| Jul 1, 1984 | Released | Jim Bibby | St. Louis Cardinals | — | Release |
| Jul 1, 1984 | Trade | Unnamed | Montreal Expos | St. Louis Cardinals | $ |
| Jul 1, 1984 | Trade | Chris Speier | Montreal Expos | St. Louis Cardinals | Trade |
| Jul 1, 1984 | Trade | Mike Ramsey | St. Louis Cardinals | Montreal Expos | Trade |
| Jun 30, 1984 | Trade | Marty Bystrom | Philadelphia Phillies | New York Yankees | Trade |
| Jun 30, 1984 | Trade | Keith Hughes | Philadelphia Phillies | New York Yankees | Trade |
| Jun 30, 1984 | Trade | Shane Rawley | New York Yankees | Philadelphia Phillies | Trade |
| Jun 29, 1984 | Signed as free agent | Tony Scott | — | Montreal Expos | Free agent signing |
| Jun 27, 1984 | Released | Ty Van Burkleo | Milwaukee Brewers | — | Release |
| Jun 27, 1984 | Trade | Salome Barojas | Chicago White Sox | Seattle Mariners | Trade |
| Jun 27, 1984 | Trade | Jerry Don Gleaton | Seattle Mariners | Chicago White Sox | Trade |
| Jun 27, 1984 | Trade | Gene Nelson | Seattle Mariners | Chicago White Sox | Trade |
| Jun 26, 1984 | Trade | Jim Siwy | Chicago White Sox | Cleveland Indians | Trade |
| Jun 25, 1984 | Signed as free agent | Don Gordon | — | Toronto Blue Jays | Free agent signing |
| Jun 23, 1984 | Released | Don Gordon | Detroit Tigers | — | Release |
| Jun 22, 1984 | Released | Rick Monday | Los Angeles Dodgers | — | Release |
| Jun 22, 1984 | Released | Tony Scott | Houston Astros | — | Release |
| Jun 22, 1984 | Released | Mike Torrez | New York Mets | — | Release |
| Jun 21, 1984 | Signed as free agent | Hipolito Peña | — | Pittsburgh Pirates | Free agent signing |
| Jun 21, 1984 | Trade | Dan Spillner | Cleveland Indians | Chicago White Sox | Trade |
| Jun 19, 1984 | Signed | Kevin Blankenship | — | Atlanta Braves | Amateur free agent signing |
| Jun 19, 1984 | Signed as free agent | Jose Morales | — | Montreal Expos | Free agent signing |
| Jun 15, 1984 | Trade | Mike Jorgensen | Atlanta Braves | St. Louis Cardinals | Trade |
| Jun 15, 1984 | Trade | Ken Dayley | Atlanta Braves | St. Louis Cardinals | Trade |
| Jun 15, 1984 | Trade | Ken Oberkfell | St. Louis Cardinals | Atlanta Braves | Trade |
| Jun 15, 1984 | Trade | Eddie Williams | New York Mets | Cincinnati Reds | Trade |
| Jun 15, 1984 | Trade | Jay Tibbs | New York Mets | Cincinnati Reds | Trade |
| Jun 15, 1984 | Trade | Matt Bullinger | New York Mets | Cincinnati Reds | Trade |
| Jun 15, 1984 | Trade | Bruce Berenyi | Cincinnati Reds | New York Mets | Trade |
| Jun 14, 1984 | Signed | Jeff Gray | — | Philadelphia Phillies | Amateur free agent signing |
| Jun 13, 1984 | Trade | Mel Hall | Chicago Cubs | Cleveland Indians | Trade |
| Jun 13, 1984 | Trade | Joe Carter | Chicago Cubs | Cleveland Indians | Trade |
| Jun 13, 1984 | Trade | Don Schulze | Chicago Cubs | Cleveland Indians | Trade |
| Jun 13, 1984 | Trade | Darryl Banks | Chicago Cubs | Cleveland Indians | Trade |
| Jun 13, 1984 | Trade | Rick Sutcliffe | Cleveland Indians | Chicago Cubs | Trade |
| Jun 13, 1984 | Trade | George Frazier | Cleveland Indians | Chicago Cubs | Trade |
| Jun 13, 1984 | Trade | Ron Hassey | Cleveland Indians | Chicago Cubs | Trade |
| Jun 10, 1984 | Signed as free agent | Mike Vail | — | Los Angeles Dodgers | Free agent signing |
| Jun 9, 1984 | Signed as free agent | Jim Bibby | — | St. Louis Cardinals | Free agent signing |
| Jun 9, 1984 | Signed as free agent | Paul Hartzell | — | Milwaukee Brewers | Free agent signing |
| Jun 7, 1984 | Signed as free agent | Bucky Dent | — | New York Yankees | Free agent signing |
| Jun 7, 1984 | Released | Jose Morales | Los Angeles Dodgers | — | Release |
| Jun 3, 1984 | Signed as free agent | Jim Kern | — | Philadelphia Phillies | Free agent signing |
| Jun 2, 1984 | Signed | Luis Encarnacion | — | Cleveland Indians | Amateur free agent signing |
| Jun 2, 1984 | Signed as free agent | Dave Wehrmeister | — | Philadelphia Phillies | Free agent signing |
| Jun 1, 1984 | Released | Jim Bibby | Texas Rangers | — | Release |
| May 28, 1984 | Signed | Craig Shipley | — | Los Angeles Dodgers | Amateur free agent signing |
| May 26, 1984 | Signed as free agent | Terry Leach | — | New York Mets | Free agent signing |
| May 25, 1984 | Released | Terry Leach | Atlanta Braves | — | Release |
| May 25, 1984 | Trade | Alan Bannister | Houston Astros | Texas Rangers | Trade |
| May 25, 1984 | Trade | Mike Richardt | Texas Rangers | Houston Astros | Trade |
| May 25, 1984 | Trade | Dennis Eckersley | Boston Red Sox | Chicago Cubs | Trade |
| May 25, 1984 | Trade | Mike Brumley | Boston Red Sox | Chicago Cubs | Trade |
| May 25, 1984 | Trade | Bill Buckner | Chicago Cubs | Boston Red Sox | Trade |
| May 23, 1984 | Signed as free agent | Joey McLaughlin | — | Texas Rangers | Free agent signing |
| May 23, 1984 | Signed as free agent | Jamie Quirk | — | Chicago White Sox | Free agent signing |
| May 23, 1984 | Signed as free agent | Craig Swan | — | California Angels | Free agent signing |
| May 19, 1984 | Signed as free agent | Mitchell Page | — | Pittsburgh Pirates | Free agent signing |
| May 17, 1984 | Released | Jim Palmer | Baltimore Orioles | — | Release |
| May 16, 1984 | Signed | Rob Ducey | — | Toronto Blue Jays | Amateur free agent signing |
| May 13, 1984 | Released | Joey McLaughlin | Toronto Blue Jays | — | Release |
| May 13, 1984 | Signed as free agent | Dave Schuler | — | Montreal Expos | Free agent signing |
| May 11, 1984 | Signed as free agent | Bob Lacey | — | San Francisco Giants | Free agent signing |
| May 9, 1984 | Signed | Esteban Beltre | — | Montreal Expos | Amateur free agent signing |
| May 9, 1984 | Released | Paul Hartzell | Milwaukee Brewers | — | Release |
| May 9, 1984 | Released | Craig Swan | New York Mets | — | Release |
| May 8, 1984 | Released | Dick Tidrow | New York Mets | — | Release |
| May 2, 1984 | Signed as free agent | Andy Hassler | — | St. Louis Cardinals | Free agent signing |
| May 1, 1984 | Signed as free agent | Mike Proly | — | Toronto Blue Jays | Free agent signing |
| Apr 28, 1984 | Released | Mike Proly | Chicago Cubs | — | Release |
| Apr 27, 1984 | Released | J. R. Richard | Houston Astros | — | Release |
| Apr 26, 1984 | Trade | Darin Cloninger | San Diego Padres | New York Yankees | Trade |
| Apr 25, 1984 | Signed as free agent | Butch Benton | — | Detroit Tigers | Free agent signing |
| Apr 25, 1984 | Signed as free agent | Juan Eichelberger | — | Milwaukee Brewers | Free agent signing |
| Apr 24, 1984 | Released | Biff Pocoroba | Atlanta Braves | — | Release |
| Apr 23, 1984 | Trade | Paul Noce | San Diego Padres | Chicago Cubs | Trade |
| Apr 23, 1984 | Trade | Terry Austin | Chicago Cubs | San Diego Padres | Trade |
| Apr 20, 1984 | Released | Butch Benton | Philadelphia Phillies | — | Release |
| Apr 18, 1984 | Signed as free agent | Paul Hartzell | — | Milwaukee Brewers | Free agent signing |
| Apr 17, 1984 | Signed as free agent | Oscar Gamble | — | New York Yankees | Free agent signing |
| Apr 10, 1984 | Signed as free agent | Ruppert Jones | — | Detroit Tigers | Free agent signing |
| Apr 9, 1984 | Trade | Ron Meridith | Atlanta Braves | Chicago Cubs | Trade |
| Apr 9, 1984 | Trade | Terry Leach | Chicago Cubs | Atlanta Braves | Trade |
| Apr 7, 1984 | Released | DeWayne Buice | Cleveland Indians | — | Release |
| Apr 7, 1984 | Signed as free agent | Mark Wagner | — | Oakland Athletics | Free agent signing |
| Apr 6, 1984 | Signed as free agent | Jerry Ujdur | — | Cleveland Indians | Free agent signing |
| Apr 5, 1984 | Signed as free agent | Steve Mura | — | Philadelphia Phillies | Free agent signing |
| Apr 5, 1984 | Signed as free agent | Bill Nahorodny | — | Seattle Mariners | Free agent signing |
| Apr 5, 1984 | Signed as free agent | Ron Roenicke | — | San Diego Padres | Free agent signing |
| Apr 3, 1984 | Signed as free agent | Manny Castillo | — | Toronto Blue Jays | Free agent signing |
| Apr 3, 1984 | Released | Jim Corsi | New York Yankees | — | Release |
| Apr 3, 1984 | Signed as free agent | Rick Leach | — | Toronto Blue Jays | Free agent signing |
| Apr 3, 1984 | Signed as free agent | Bob Walk | — | Pittsburgh Pirates | Free agent signing |
| Apr 2, 1984 | Released | Bucky Dent | Texas Rangers | — | Release |
| Apr 2, 1984 | Signed as free agent | Kevin Hickey | — | Chicago White Sox | Free agent signing |
| Apr 2, 1984 | Signed as free agent | Bobby Moore | — | San Francisco Giants | Free agent signing |
| Apr 2, 1984 | Signed as free agent | Pat Underwood | — | Baltimore Orioles | Free agent signing |
| Apr 1, 1984 | Signed as free agent | Dusty Baker | — | San Francisco Giants | Free agent signing |
| Apr 1, 1984 | Released | Jim Barr | San Francisco Giants | — | Release |
| Apr 1, 1984 | Released | Juan Eichelberger | Cleveland Indians | — | Release |
| Apr 1, 1984 | Released | Andy Hassler | California Angels | — | Release |
| Apr 1, 1984 | Signed as free agent | Wallace Johnson | — | Montreal Expos | Free agent signing |
| Apr 1, 1984 | Signed | Omar Vizquel | — | Seattle Mariners | Amateur free agent signing |
| Apr 1, 1984 | Trade | Tom Edens | Kansas City Royals | New York Mets | Trade |
| Apr 1, 1984 | Trade | Tucker Ashford | New York Mets | Kansas City Royals | Trade |
| Apr 1, 1984 | Trade | Bill Wrona | Seattle Mariners | San Diego Padres | Trade |
| Apr 1, 1984 | Trade | Ron Tingley | San Diego Padres | Seattle Mariners | Trade |
| Mar 31, 1984 | Released | Bill Nahorodny | Seattle Mariners | — | Release |
| Mar 31, 1984 | Released | Gene Tenace | Pittsburgh Pirates | — | Release |
| Mar 31, 1984 | Trade | Andy McGaffigan | San Francisco Giants | Montreal Expos | Added to trade |
| Mar 31, 1984 | Trade | Stan Boderick | Chicago Cubs | Oakland Athletics | Trade |
| Mar 31, 1984 | Trade | Don Werner | Kansas City Royals | Chicago Cubs | Trade |
| Mar 31, 1984 | Trade | Derek Botelho | Kansas City Royals | Chicago Cubs | Trade |
| Mar 31, 1984 | Trade | Alan Hargesheimer | Chicago Cubs | Kansas City Royals | Trade |
| Mar 30, 1984 | Released | Bob Lacey | California Angels | — | Release |
| Mar 30, 1984 | Trade | Charlie Nail | Detroit Tigers | Cincinnati Reds | Trade |
| Mar 30, 1984 | Trade | Dallas Williams | Cincinnati Reds | Detroit Tigers | Trade |
| Mar 30, 1984 | Trade | Graig Nettles | New York Yankees | San Diego Padres | Trade |
| Mar 30, 1984 | Trade | Dennis Rasmussen | San Diego Padres | New York Yankees | Trade |
| Mar 29, 1984 | Signed as free agent | Dave Kingman | — | Oakland Athletics | Free agent signing |
| Mar 29, 1984 | Released | Mitchell Page | Oakland Athletics | — | Release |
| Mar 28, 1984 | Released | Bobby Moore | Milwaukee Brewers | — | Release |
| Mar 28, 1984 | Signed as free agent | Kelly Paris | — | Pittsburgh Pirates | Free agent signing |
| Mar 28, 1984 | Signed as free agent | Gene Richards | — | San Francisco Giants | Free agent signing |
| Mar 28, 1984 | Signed as free agent | Paul Wilmet | — | St. Louis Cardinals | Free agent signing |
| Mar 27, 1984 | Released | Wallace Johnson | San Francisco Giants | — | Release |
| Mar 27, 1984 | Signed | Norberto Martin | — | Chicago White Sox | Amateur free agent signing |
| Mar 26, 1984 | Released | Juan Bonilla | San Diego Padres | — | Release |
| Mar 26, 1984 | Released | Ed Farmer | Oakland Athletics | — | Release |
| Mar 26, 1984 | Released | Kevin Hickey | Chicago White Sox | — | Release |
| Mar 26, 1984 | Released | Randy Martz | Chicago White Sox | — | Release |
| Mar 26, 1984 | Released | Steve Mura | Chicago White Sox | — | Release |
| Mar 26, 1984 | Released | Jamie Quirk | St. Louis Cardinals | — | Release |
| Mar 26, 1984 | Released | Jerry Ujdur | Detroit Tigers | — | Release |
| Mar 26, 1984 | Released | Mike Vail | Montreal Expos | — | Release |
| Mar 26, 1984 | Released | Bob Walk | Atlanta Braves | — | Release |
| Mar 26, 1984 | Trade | George Bjorkman | Houston Astros | Montreal Expos | Trade |
| Mar 26, 1984 | Trade | Bill Campbell | Chicago Cubs | Philadelphia Phillies | Trade |
| Mar 26, 1984 | Trade | Mike Diaz | Chicago Cubs | Philadelphia Phillies | Trade |
| Mar 26, 1984 | Trade | Gary Matthews | Philadelphia Phillies | Chicago Cubs | Trade |
| Mar 26, 1984 | Trade | Bob Dernier | Philadelphia Phillies | Chicago Cubs | Trade |
| Mar 26, 1984 | Trade | Porfi Altamirano | Philadelphia Phillies | Chicago Cubs | Trade |
| Mar 26, 1984 | Trade | Tim Stoddard | Oakland Athletics | Chicago Cubs | Trade |
| Mar 26, 1984 | Trade | Stan Kyles | Chicago Cubs | Oakland Athletics | Trade |
| Mar 25, 1984 | Trade | Tito Landrum | Baltimore Orioles | St. Louis Cardinals | Trade |
| Mar 25, 1984 | Trade | Oscar Brito | St. Louis Cardinals | Baltimore Orioles | Trade |
| Mar 24, 1984 | Released | Rick Leach | Detroit Tigers | — | Release |
| Mar 24, 1984 | Released | Jim Smith | Detroit Tigers | — | Release |
| Mar 24, 1984 | Trade | Dave Bergman | San Francisco Giants | Philadelphia Phillies | Trade |
| Mar 24, 1984 | Trade | Alejandro Sanchez | Philadelphia Phillies | San Francisco Giants | Trade |
| Mar 24, 1984 | Trade | John Wockenfuss | Detroit Tigers | Philadelphia Phillies | Trade |
| Mar 24, 1984 | Trade | Glenn Wilson | Detroit Tigers | Philadelphia Phillies | Trade |
| Mar 24, 1984 | Trade | Willie Hernandez | Philadelphia Phillies | Detroit Tigers | Trade |
| Mar 24, 1984 | Trade | Dave Bergman | Philadelphia Phillies | Detroit Tigers | Trade |
| Mar 24, 1984 | Trade | Michael Poindexter | Cleveland Indians | Boston Red Sox | Trade |
| Mar 24, 1984 | Trade | Paul Perry | Cleveland Indians | Boston Red Sox | Trade |
| Mar 24, 1984 | Trade | Luis Aponte | Boston Red Sox | Cleveland Indians | Trade |
| Mar 23, 1984 | Released | Manny Castillo | Seattle Mariners | — | Release |
| Mar 23, 1984 | Released | Mike Chris | Chicago Cubs | — | Release |
| Mar 23, 1984 | Released | Ron Roenicke | Seattle Mariners | — | Release |
| Mar 23, 1984 | Released | Rick Sweet | Seattle Mariners | — | Release |
| Mar 21, 1984 | Signed as free agent | Art Howe | — | St. Louis Cardinals | Free agent signing |
| Mar 21, 1984 | Released | Kelly Paris | Chicago White Sox | — | Release |
| Mar 19, 1984 | Released | Fergie Jenkins | Chicago Cubs | — | Release |
| Mar 17, 1984 | Signed as free agent | Mickey Mahler | — | St. Louis Cardinals | Free agent signing |
| Mar 17, 1984 | Signed as free agent | Jerry Martin | — | New York Mets | Free agent signing |
| Mar 16, 1984 | Released | Mickey Mahler | New York Mets | — | Release |
| Mar 13, 1984 | Trade | Don Cooper | Toronto Blue Jays | New York Yankees | Trade |
| Mar 13, 1984 | Trade | Derwin McNealy | New York Yankees | Toronto Blue Jays | Trade |
| Mar 10, 1984 | Released | Bob Johnson | Texas Rangers | — | Release |
| Mar 4, 1984 | Signed | Jim Neidlinger | — | Pittsburgh Pirates | Amateur free agent signing |
| Mar 1, 1984 | Released | Jim Kern | Chicago White Sox | — | Release |
| Feb 29, 1984 | Signed as free agent | Fernando Arroyo | — | Chicago White Sox | Free agent signing |
| Feb 27, 1984 | Trade | Al Oliver | Montreal Expos | San Francisco Giants | Trade |
| Feb 27, 1984 | Trade | Fred Breining | San Francisco Giants | Montreal Expos | Trade |
| Feb 27, 1984 | Trade | Max Venable | San Francisco Giants | Montreal Expos | Trade |
| Feb 24, 1984 | Trade | Tom Wieghaus | Montreal Expos | Houston Astros | Trade |
| Feb 22, 1984 | Released | Mark Bradley | New York Mets | — | Release |
| Feb 21, 1984 | Signed as free agent | Jim Lewis | — | Seattle Mariners | Free agent signing |
| Feb 20, 1984 | Signed as free agent | Enos Cabell | — | Houston Astros | Free agent signing |
| Feb 20, 1984 | Signed as free agent | Rich Gale | — | Boston Red Sox | Free agent signing |
| Feb 19, 1984 | Trade | Billy Max | Milwaukee Brewers | New York Mets | Trade |
| Feb 19, 1984 | Trade | Kelvin Moore | New York Mets | Milwaukee Brewers | Trade |
| Feb 17, 1984 | Signed as free agent | J. R. Richard | — | Houston Astros | Free agent signing |
| Feb 15, 1984 | Trade | Jerry Koosman | Chicago White Sox | Philadelphia Phillies | Trade |
| Feb 14, 1984 | Signed as free agent | Rod Allen | — | Detroit Tigers | Free agent signing |
| Feb 14, 1984 | Trade | Jose Alvarez | Atlanta Braves | Houston Astros | Trade |
| Feb 14, 1984 | Trade | Ron Meridith | Houston Astros | Atlanta Braves | Trade |
| Feb 14, 1984 | Trade | Eric Parent | Seattle Mariners | New York Yankees | Trade |
| Feb 14, 1984 | Trade | Scott Nielsen | Seattle Mariners | New York Yankees | Trade |
| Feb 14, 1984 | Trade | Larry Milbourne | New York Yankees | Seattle Mariners | Trade |
| Feb 10, 1984 | Signed as free agent | Lorenzo Gray | — | Cleveland Indians | Free agent signing |
| Feb 10, 1984 | Released | Eddie Miller | Philadelphia Phillies | — | Release |
| Feb 8, 1984 | Trade | Guy Elston | New York Yankees | Cleveland Indians | Trade |
| Feb 8, 1984 | Trade | Rick Browne | Cleveland Indians | New York Yankees | Trade |
| Feb 8, 1984 | Trade | Colin Ward | Detroit Tigers | San Francisco Giants | Trade |
| Feb 8, 1984 | Trade | Pat Larkin | San Francisco Giants | Detroit Tigers | Trade |
| Feb 7, 1984 | Released | Fernando Arroyo | Chicago White Sox | — | Release |
| Feb 7, 1984 | Signed as free agent | Jim Bibby | — | Texas Rangers | Free agent signing |
| Feb 7, 1984 | Signed as free agent | Tom Underwood | — | Baltimore Orioles | Free agent signing |
| Feb 6, 1984 | Signed as free agent | Rob Picciolo | — | California Angels | Free agent signing |
| Feb 5, 1984 | Trade | George Frazier | New York Yankees | Cleveland Indians | Trade |
| Feb 5, 1984 | Trade | Otis Nixon | New York Yankees | Cleveland Indians | Trade |
| Feb 5, 1984 | Trade | Toby Harrah | Cleveland Indians | New York Yankees | Trade |
| Feb 4, 1984 | Signed as free agent | Bob Lacey | — | California Angels | Free agent signing |
| Feb 2, 1984 | Signed as free agent | Derrel Thomas | — | Montreal Expos | Free agent signing |
| Feb 1, 1984 | Signed as free agent | Joe Charboneau | — | Pittsburgh Pirates | Free agent signing |
| Jan 30, 1984 | Signed as free agent | Butch Benton | — | Philadelphia Phillies | Free agent signing |
| Jan 30, 1984 | Released | Lorenzo Gray | Chicago White Sox | — | Release |
| Jan 30, 1984 | Released | Dave Kingman | New York Mets | — | Release |
| Jan 29, 1984 | Signed | Jeff Treadway | — | Cincinnati Reds | Amateur free agent signing |
| Jan 27, 1984 | Signed as free agent | Tommy Boggs | — | Texas Rangers | Free agent signing |
| Jan 27, 1984 | Signed as free agent | Dick Tidrow | — | New York Mets | Free agent signing |
| Jan 26, 1984 | Signed as free agent | Steve Henderson | — | Seattle Mariners | Free agent signing |
| Jan 25, 1984 | Signed as free agent | Mickey Mahler | — | New York Mets | Free agent signing |
| Jan 23, 1984 | Signed as free agent | Dan Ford | — | Baltimore Orioles | Free agent signing |
| Jan 23, 1984 | Signed as free agent | Paul Mirabella | — | Seattle Mariners | Free agent signing |
| Jan 23, 1984 | Signed as free agent | Bill Nahorodny | — | Seattle Mariners | Free agent signing |
| Jan 23, 1984 | Signed as free agent | Lary Sorensen | — | Oakland Athletics | Free agent signing |
| Jan 23, 1984 | Trade | Tom Brennan | Cleveland Indians | Chicago White Sox | Trade |
| Jan 20, 1984 | Signed as free agent | Pete Rose | — | Montreal Expos | Free agent signing |
| Jan 19, 1984 | Signed as free agent | Steve Comer | — | Cleveland Indians | Free agent signing |
| Jan 19, 1984 | Signed as free agent | Miguel Dilone | — | Montreal Expos | Free agent signing |
| Jan 17, 1984 | Signed as free agent | Jamie Easterly | — | Cleveland Indians | Free agent signing |
| Jan 17, 1984 | Released | Don Money | Milwaukee Brewers | — | Release |
| Jan 17, 1984 | Released | Rafael Santana | St. Louis Cardinals | — | Release |
| Jan 17, 1984 | Signed as free agent | Rafael Santana | — | New York Mets | Free agent signing |
| Jan 17, 1984 | Signed as free agent | Nate Snell | — | Baltimore Orioles | Free agent signing |
| Jan 16, 1984 | Released | Jack Daugherty | Oakland Athletics | — | Release |
| Jan 16, 1984 | Signed as free agent | Ted Simmons | — | Milwaukee Brewers | Free agent signing |
| Jan 15, 1984 | Trade | Jim Maler | Seattle Mariners | New York Mets | Trade |
| Jan 15, 1984 | Trade | John Semprini | New York Mets | Seattle Mariners | Trade |
| Jan 14, 1984 | Signed as free agent | DeWayne Buice | — | Cleveland Indians | Free agent signing |
| Jan 13, 1984 | Signed as free agent | Terry Whitfield | — | Los Angeles Dodgers | Free agent signing |
| Jan 12, 1984 | Signed as free agent | Johnny Paredes | — | Montreal Expos | Free agent signing |
| Jan 12, 1984 | Signed as free agent | Scot Thompson | — | San Francisco Giants | Free agent signing |
| Jan 12, 1984 | Signed as free agent | Dave Tomlin | — | Pittsburgh Pirates | Free agent signing |
| Jan 10, 1984 | Signed as free agent | Dave Huppert | — | Milwaukee Brewers | Free agent signing |
| Jan 10, 1984 | Signed as free agent | Dennis Lamp | — | Toronto Blue Jays | Free agent signing |
| Jan 8, 1984 | Signed as free agent | Julio Cruz | — | Chicago White Sox | Free agent signing |
| Jan 7, 1984 | Signed as free agent | Ramon Peña | — | Detroit Tigers | Free agent signing |
| Jan 6, 1984 | Signed as free agent | Rich Gossage | — | San Diego Padres | Free agent signing |
| Jan 5, 1984 | Signed as free agent | Richie Hebner | — | Chicago Cubs | Free agent signing |
| Jan 5, 1984 | Signed as free agent | Phil Niekro | — | New York Yankees | Free agent signing |
| Jan 3, 1984 | Signed | Felix Jose | — | Oakland Athletics | Amateur free agent signing |
| Jan 3, 1984 | Signed | Luis Polonia | — | Oakland Athletics | Amateur free agent signing |
| before the 1984 season | Released | Joe Charboneau | Cleveland Indians | — | Release |
| before the 1984 season | Signed as free agent | Luis Rosado | — | Baltimore Orioles | Free agent signing |
| before the 1984 season | Released | Pat Underwood | Texas Rangers | — | Release |
Every row is mapped onto the same trade / signing / release vocabulary the modern feed uses, with the era’s own type description kept on each row. Club names are the names of the day (the Boston Braves years, the Brooklyn Dodgers years), and each links to the franchise it is today. Some dates are only partially known or flagged approximate by the source; they are shown exactly as published, never completed to a fake precise day.