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The 1975 season’s official transaction log: 382 trades, signings and releases involving major-league clubs, listed newest first.
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| Dec 30, 1975 | Released | Orlando Sanchez | New York Mets | — | Release |
| Dec 27, 1975 | Signed | Luis Aguayo | — | Philadelphia Phillies | Amateur free agent signing |
| Dec 23, 1975 | Trade | Bob Randall | Los Angeles Dodgers | Minnesota Twins | Trade |
| Dec 23, 1975 | Trade | Danny Walton | Minnesota Twins | Los Angeles Dodgers | Trade |
| Dec 23, 1975 | Trade | Craig Cacek | New York Mets | Houston Astros | Trade |
| Dec 23, 1975 | Trade | Manny Lantigua | Houston Astros | New York Mets | Trade |
| Dec 22, 1975 | Trade | Rodney Scott | Kansas City Royals | Montreal Expos | Trade |
| Dec 22, 1975 | Trade | Mick Kelleher | St. Louis Cardinals | Chicago Cubs | Trade |
| Dec 22, 1975 | Trade | Vic Harris | Chicago Cubs | St. Louis Cardinals | Trade |
| Dec 22, 1975 | Trade | Kenzie Davis | Kansas City Royals | Milwaukee Brewers | Trade |
| Dec 22, 1975 | Trade | Pat Osburn | Milwaukee Brewers | Kansas City Royals | Trade |
| Dec 18, 1975 | Released | Billy Grabarkewitz | Oakland Athletics | — | Release |
| Dec 17, 1975 | Released | Sonny Siebert | Oakland Athletics | — | Release |
| Dec 15, 1975 | Released | Vada Pinson | Kansas City Royals | — | Release |
| Dec 13, 1975 | Signed as free agent | Paul Thormodsgard | — | Minnesota Twins | Free agent signing |
| Dec 12, 1975 | Signed | Julio Valdez | — | Boston Red Sox | Amateur free agent signing |
| Dec 12, 1975 | Trade | Luis Sanchez | Houston Astros | Cincinnati Reds | Trade |
| Dec 12, 1975 | Trade | Carlos Alfonso | Houston Astros | Cincinnati Reds | Trade |
| Dec 12, 1975 | Trade | Craig Skok | Boston Red Sox | Texas Rangers | Trade |
| Dec 12, 1975 | Trade | Tommy Helms | Houston Astros | Pittsburgh Pirates | Trade |
| Dec 12, 1975 | Trade | Bob Bailey | Montreal Expos | Cincinnati Reds | Trade |
| Dec 12, 1975 | Trade | Clay Kirby | Cincinnati Reds | Montreal Expos | Trade |
| Dec 12, 1975 | Trade | Mike Lum | Atlanta Braves | Cincinnati Reds | Trade |
| Dec 12, 1975 | Trade | Darrel Chaney | Cincinnati Reds | Atlanta Braves | Trade |
| Dec 12, 1975 | Trade | Tom House | Atlanta Braves | Boston Red Sox | Trade |
| Dec 12, 1975 | Trade | Roger Moret | Boston Red Sox | Atlanta Braves | Trade |
| Dec 12, 1975 | Trade | Gene Clines | New York Mets | Texas Rangers | Trade |
| Dec 12, 1975 | Trade | Joe Lovitto | Texas Rangers | New York Mets | Trade |
| Dec 12, 1975 | Trade | Buddy Bradford | St. Louis Cardinals | Chicago White Sox | Trade |
| Dec 12, 1975 | Trade | Greg Terlecky | St. Louis Cardinals | Chicago White Sox | Trade |
| Dec 12, 1975 | Trade | Lee Richard | Chicago White Sox | St. Louis Cardinals | Trade |
| Dec 12, 1975 | Trade | Ralph Garr | Atlanta Braves | Chicago White Sox | Trade |
| Dec 12, 1975 | Trade | Larvell Blanks | Atlanta Braves | Chicago White Sox | Trade |
| Dec 12, 1975 | Trade | Ken Henderson | Chicago White Sox | Atlanta Braves | Trade |
| Dec 12, 1975 | Trade | Dick Ruthven | Chicago White Sox | Atlanta Braves | Trade |
| Dec 12, 1975 | Trade | Ozzie Osborn | Chicago White Sox | Atlanta Braves | Trade |
| Dec 12, 1975 | Trade | Jack Brohamer | Cleveland Indians | Chicago White Sox | Trade |
| Dec 12, 1975 | Trade | Larvell Blanks | Chicago White Sox | Cleveland Indians | Trade |
| Dec 12, 1975 | Trade | Clay Carroll | Cincinnati Reds | Chicago White Sox | Trade |
| Dec 12, 1975 | Trade | Rich Hinton | Chicago White Sox | Cincinnati Reds | Trade |
| Dec 12, 1975 | Trade | Jeff Sovern | Chicago White Sox | Cincinnati Reds | Trade |
| Dec 12, 1975 | Trade | Rusty Staub | New York Mets | Detroit Tigers | Trade |
| Dec 12, 1975 | Trade | Bill Laxton | New York Mets | Detroit Tigers | Trade |
| Dec 12, 1975 | Trade | Mickey Lolich | Detroit Tigers | New York Mets | Trade |
| Dec 12, 1975 | Trade | Billy Baldwin | Detroit Tigers | New York Mets | Trade |
| Dec 11, 1975 | Signed | Tack Wilson | — | Los Angeles Dodgers | Amateur free agent signing |
| Dec 11, 1975 | Trade | Bobby Bonds | New York Yankees | California Angels | Trade |
| Dec 11, 1975 | Trade | Mickey Rivers | California Angels | New York Yankees | Trade |
| Dec 11, 1975 | Trade | Ed Figueroa | California Angels | New York Yankees | Trade |
| Dec 11, 1975 | Trade | Willie Randolph | Pittsburgh Pirates | New York Yankees | Trade |
| Dec 11, 1975 | Trade | Ken Brett | Pittsburgh Pirates | New York Yankees | Trade |
| Dec 11, 1975 | Trade | Dock Ellis | Pittsburgh Pirates | New York Yankees | Trade |
| Dec 11, 1975 | Trade | Doc Medich | New York Yankees | Pittsburgh Pirates | Trade |
| Dec 11, 1975 | Trade | Bill Melton | Chicago White Sox | California Angels | Trade |
| Dec 11, 1975 | Trade | Steve Dunning | Chicago White Sox | California Angels | Trade |
| Dec 11, 1975 | Trade | Jim Spencer | California Angels | Chicago White Sox | Trade |
| Dec 11, 1975 | Trade | Morris Nettles | California Angels | Chicago White Sox | Trade |
| Dec 11, 1975 | Trade | Joe McIntosh | San Diego Padres | Houston Astros | Trade |
| Dec 11, 1975 | Trade | Larry Hardy | San Diego Padres | Houston Astros | Trade |
| Dec 11, 1975 | Trade | Doug Rader | Houston Astros | San Diego Padres | Trade |
| Dec 10, 1975 | Trade | Unnamed | Texas Rangers | California Angels | $100000 |
| Dec 10, 1975 | Trade | Jim Spencer | Texas Rangers | California Angels | Trade |
| Dec 10, 1975 | Trade | Bill Singer | California Angels | Texas Rangers | Trade |
| Dec 10, 1975 | Trade | Dick Ruthven | Philadelphia Phillies | Chicago White Sox | Trade |
| Dec 10, 1975 | Trade | Roy Thomas | Philadelphia Phillies | Chicago White Sox | Trade |
| Dec 10, 1975 | Trade | Alan Bannister | Philadelphia Phillies | Chicago White Sox | Trade |
| Dec 10, 1975 | Trade | Jim Kaat | Chicago White Sox | Philadelphia Phillies | Trade |
| Dec 10, 1975 | Trade | Mike Buskey | Chicago White Sox | Philadelphia Phillies | Trade |
| Dec 9, 1975 | Released | Wayne Granger | Houston Astros | — | Release |
| Dec 9, 1975 | Trade | Stan Thomas | Texas Rangers | Cleveland Indians | Trade |
| Dec 9, 1975 | Trade | Ron Pruitt | Texas Rangers | Cleveland Indians | Trade |
| Dec 9, 1975 | Trade | John Ellis | Cleveland Indians | Texas Rangers | Trade |
| Dec 9, 1975 | Trade | Ron Reed | St. Louis Cardinals | Philadelphia Phillies | Trade |
| Dec 9, 1975 | Trade | Mike Anderson | Philadelphia Phillies | St. Louis Cardinals | Trade |
| Dec 8, 1975 | Trade | Pete Falcone | San Francisco Giants | St. Louis Cardinals | Trade |
| Dec 8, 1975 | Trade | Ken Reitz | St. Louis Cardinals | San Francisco Giants | Trade |
| Dec 6, 1975 | Trade | Milt May | Houston Astros | Detroit Tigers | Trade |
| Dec 6, 1975 | Trade | Dave Roberts | Houston Astros | Detroit Tigers | Trade |
| Dec 6, 1975 | Trade | Jim Crawford | Houston Astros | Detroit Tigers | Trade |
| Dec 6, 1975 | Trade | Leon Roberts | Detroit Tigers | Houston Astros | Trade |
| Dec 6, 1975 | Trade | Terry Humphrey | Detroit Tigers | Houston Astros | Trade |
| Dec 6, 1975 | Trade | Gene Pentz | Detroit Tigers | Houston Astros | Trade |
| Dec 6, 1975 | Trade | Mark Lemongello | Detroit Tigers | Houston Astros | Trade |
| Dec 4, 1975 | Signed | Rafael Vasquez | — | Pittsburgh Pirates | Amateur free agent signing |
| Dec 3, 1975 | Signed | Kelvin Chapman | — | New York Mets | Amateur free agent signing |
| Nov 23, 1975 | Signed as free agent | Luis Salazar | — | Pittsburgh Pirates | Free agent signing |
| Nov 23, 1975 | Signed | Dickie Thon | — | California Angels | Amateur free agent signing |
| Nov 22, 1975 | Trade | Pat Dobson | New York Yankees | Cleveland Indians | Trade |
| Nov 22, 1975 | Trade | Oscar Gamble | Cleveland Indians | New York Yankees | Trade |
| Nov 20, 1975 | Released | Tommy Harper | Oakland Athletics | — | Release |
| Nov 17, 1975 | Trade | Fergie Jenkins | Texas Rangers | Boston Red Sox | Trade |
| Nov 17, 1975 | Trade | Juan Beniquez | Boston Red Sox | Texas Rangers | Trade |
| Nov 17, 1975 | Trade | Steve Barr | Boston Red Sox | Texas Rangers | Trade |
| Nov 17, 1975 | Trade | Dusty Baker | Atlanta Braves | Los Angeles Dodgers | Trade |
| Nov 17, 1975 | Trade | Ed Goodson | Atlanta Braves | Los Angeles Dodgers | Trade |
| Nov 17, 1975 | Trade | Jim Wynn | Los Angeles Dodgers | Atlanta Braves | Trade |
| Nov 17, 1975 | Trade | Tom Paciorek | Los Angeles Dodgers | Atlanta Braves | Trade |
| Nov 17, 1975 | Trade | Lee Lacy | Los Angeles Dodgers | Atlanta Braves | Trade |
| Nov 17, 1975 | Trade | Jerry Royster | Los Angeles Dodgers | Atlanta Braves | Trade |
| Nov 14, 1975 | Signed | Ed Romero | — | Milwaukee Brewers | Amateur free agent signing |
| Nov 12, 1975 | Trade | Dave Nelson | Texas Rangers | Kansas City Royals | Trade |
| Nov 12, 1975 | Trade | Nelson Briles | Kansas City Royals | Texas Rangers | Trade |
| Nov 10, 1975 | Released | Harmon Killebrew | Kansas City Royals | — | Release |
| Nov 7, 1975 | Trade | Chuck Erickson | Boston Red Sox | Chicago White Sox | Trade |
| Nov 4, 1975 | Trade | Rudy Meoli | California Angels | San Diego Padres | Trade |
| Oct 28, 1975 | Trade | Larry Lintz | St. Louis Cardinals | Oakland Athletics | Trade |
| Oct 28, 1975 | Trade | Charlie Chant | Oakland Athletics | St. Louis Cardinals | Trade |
| Oct 28, 1975 | Trade | Mike Garman | St. Louis Cardinals | Chicago Cubs | Trade |
| Oct 28, 1975 | Trade | Don Kessinger | Chicago Cubs | St. Louis Cardinals | Trade |
| Oct 24, 1975 | Released | Joe Hoerner | Philadelphia Phillies | — | Release |
| Oct 24, 1975 | Released | Tim Ireland | Baltimore Orioles | — | Release |
| Oct 24, 1975 | Released | Dick McAuliffe | Boston Red Sox | — | Release |
| Oct 24, 1975 | Trade | Larry Cox | Philadelphia Phillies | Minnesota Twins | Trade |
| Oct 24, 1975 | Trade | Sergio Ferrer | Minnesota Twins | Philadelphia Phillies | Trade |
| Oct 24, 1975 | Trade | Joaquin Andujar | Cincinnati Reds | Houston Astros | Trade |
| Oct 22, 1975 | Released | Gene Michael | Detroit Tigers | — | Release |
| Oct 20, 1975 | Trade | Dick Sharon | San Diego Padres | St. Louis Cardinals | Trade |
| Oct 20, 1975 | Trade | Willie Davis | St. Louis Cardinals | San Diego Padres | Trade |
| Oct 10, 1975 | Released | Dal Maxvill | Oakland Athletics | — | Release |
| Sep 30, 1975 | Trade | Doug Howard | St. Louis Cardinals | Cleveland Indians | Trade |
| Sep 30, 1975 | Trade | Mike Barlow | St. Louis Cardinals | Houston Astros | Trade |
| Sep 29, 1975 | Released | Dick Billings | St. Louis Cardinals | — | Release |
| Sep 21, 1975 | Trade | Unnamed | Boston Red Sox | Chicago White Sox | $ |
| Sep 21, 1975 | Trade | Deron Johnson | Chicago White Sox | Boston Red Sox | Trade |
| Sep 17, 1975 | Trade | Gary Ross | San Diego Padres | California Angels | Trade |
| Sep 17, 1975 | Trade | Bobby Valentine | California Angels | San Diego Padres | Trade |
| Sep 15, 1975 | Trade | Mark Williams | Kansas City Royals | Oakland Athletics | Trade |
| Sep 15, 1975 | Trade | Richard Ingalls | Oakland Athletics | Kansas City Royals | Trade |
| Sep 11, 1975 | Released | Jerry Moses | Chicago White Sox | — | Release |
| Sep 4, 1975 | Released | Alex Johnson | New York Yankees | — | Release |
| Sep 4, 1975 | Released | Eddie Watt | Chicago Cubs | — | Release |
| Sep 4, 1975 | Trade | Ray Sadecki | Atlanta Braves | Kansas City Royals | Trade |
| Sep 4, 1975 | Trade | Norm Angelini | Kansas City Royals | Atlanta Braves | Trade |
| Sep 4, 1975 | Trade | Al Autry | Kansas City Royals | Atlanta Braves | Trade |
| Sep 2, 1975 | Released | Tony Conigliaro | Boston Red Sox | — | Release |
| Sep 1, 1975 | Signed | Rudy Law | — | Los Angeles Dodgers | Amateur free agent signing |
| Aug 29, 1975 | Signed as free agent | Dal Maxvill | — | Oakland Athletics | Free agent signing |
| Aug 21, 1975 | Signed as free agent | Dick McAuliffe | — | Boston Red Sox | Free agent signing |
| Aug 13, 1975 | Released | Jim Perry | Oakland Athletics | — | Release |
| Aug 11, 1975 | Released | Bill Sudakis | Cleveland Indians | — | Release |
| Aug 6, 1975 | Released | Bob Johnson | New York Yankees | — | Release |
| Aug 5, 1975 | Released | Roger Nelson | Oakland Athletics | — | Release |
| Aug 5, 1975 | Trade | Dave Schneck | Philadelphia Phillies | Cincinnati Reds | Trade |
| Aug 5, 1975 | Trade | John Vukovich | Cincinnati Reds | Philadelphia Phillies | Trade |
| Jul 31, 1975 | Released | Ron Bryant | St. Louis Cardinals | — | Release |
| Jul 30, 1975 | Released | Paul Popovich | Pittsburgh Pirates | — | Release |
| Jul 27, 1975 | Released | Cleon Jones | New York Mets | — | Release |
| Jul 25, 1975 | Trade | Larry Lintz | Montreal Expos | St. Louis Cardinals | Trade |
| Jul 25, 1975 | Trade | Jim Dwyer | St. Louis Cardinals | Montreal Expos | Trade |
| Jul 22, 1975 | Signed | Tony Peña | — | Pittsburgh Pirates | Amateur free agent signing |
| Jul 22, 1975 | Trade | Dave Sells | California Angels | Los Angeles Dodgers | Trade |
| Jul 22, 1975 | Trade | Eddie Solomon | Chicago Cubs | St. Louis Cardinals | Trade |
| Jul 22, 1975 | Trade | Ken Crosby | St. Louis Cardinals | Chicago Cubs | Trade |
| Jul 17, 1975 | Released | Jim Merritt | Texas Rangers | — | Release |
| Jul 15, 1975 | Signed as free agent | Tim Ireland | — | Baltimore Orioles | Free agent signing |
| Jul 15, 1975 | Released | Bob Oliver | New York Yankees | — | Release |
| Jul 15, 1975 | Trade | Jim Brewer | Los Angeles Dodgers | California Angels | Trade |
| Jul 7, 1975 | Released | Tim Ireland | Cincinnati Reds | — | Release |
| Jul 7, 1975 | Trade | Bill Parsons | St. Louis Cardinals | Chicago White Sox | Trade |
| Jul 4, 1975 | Trade | Jim Willoughby | St. Louis Cardinals | Boston Red Sox | Trade |
| Jul 1, 1975 | Signed as free agent | Tim McCarver | — | Philadelphia Phillies | Free agent signing |
| Jun 30, 1975 | Signed | Kim Allen | — | California Angels | Amateur free agent signing |
| Jun 30, 1975 | Released | Tom Egan | California Angels | — | Release |
| Jun 30, 1975 | Released | Tommy McCraw | Cleveland Indians | — | Release |
| Jun 30, 1975 | Signed | Mike Patterson | — | Oakland Athletics | Amateur free agent signing |
| Jun 30, 1975 | Signed | Gary Serum | — | Minnesota Twins | Amateur free agent signing |
| Jun 30, 1975 | Signed as free agent | Bill Sudakis | — | Cleveland Indians | Free agent signing |
| Jun 30, 1975 | Trade | Unnamed | St. Louis Cardinals | Chicago White Sox | $ |
| Jun 30, 1975 | Trade | Buddy Bradford | Chicago White Sox | St. Louis Cardinals | Trade |
| Jun 30, 1975 | Trade | Unnamed | Atlanta Braves | Kansas City Royals | $ |
| Jun 30, 1975 | Trade | Bruce Dal Canton | Kansas City Royals | Atlanta Braves | Trade |
| Jun 28, 1975 | Signed | Al Holland | — | Pittsburgh Pirates | Amateur free agent signing |
| Jun 27, 1975 | Signed | Roy Lee Jackson | — | New York Mets | Amateur free agent signing |
| Jun 26, 1975 | Released | Sam McDowell | Pittsburgh Pirates | — | Release |
| Jun 25, 1975 | Released | Bob Locker | Chicago Cubs | — | Release |
| Jun 25, 1975 | Trade | Mike Easler | Houston Astros | St. Louis Cardinals | Trade |
| Jun 24, 1975 | Signed as free agent | Earl Stephenson | — | Atlanta Braves | Free agent signing |
| Jun 23, 1975 | Released | Tim McCarver | Boston Red Sox | — | Release |
| Jun 23, 1975 | Released | Bill Sudakis | California Angels | — | Release |
| Jun 19, 1975 | Released | Gary Gentry | New York Mets | — | Release |
| Jun 18, 1975 | Signed | Brian Kingman | — | Oakland Athletics | Amateur free agent signing |
| Jun 17, 1975 | Signed as free agent | Greg Erardi | — | Milwaukee Brewers | Free agent signing |
| Jun 16, 1975 | Signed as free agent | Mark Clear | — | California Angels | Free agent signing |
| Jun 16, 1975 | Signed as free agent | Jeff Cox | — | Oakland Athletics | Free agent signing |
| Jun 16, 1975 | Signed | Rick Mahler | — | Atlanta Braves | Amateur free agent signing |
| Jun 16, 1975 | Trade | Rob Belloir | Cleveland Indians | Atlanta Braves | Trade |
| Jun 15, 1975 | Signed | Sammy Stewart | — | Baltimore Orioles | Amateur free agent signing |
| Jun 15, 1975 | Trade | Dave Hamilton | Oakland Athletics | Chicago White Sox | Trade |
| Jun 15, 1975 | Trade | Chet Lemon | Oakland Athletics | Chicago White Sox | Trade |
| Jun 15, 1975 | Trade | Stan Bahnsen | Chicago White Sox | Oakland Athletics | Trade |
| Jun 15, 1975 | Trade | Skip Pitlock | Chicago White Sox | Oakland Athletics | Trade |
| Jun 15, 1975 | Trade | Tony Muser | Chicago White Sox | Baltimore Orioles | Trade |
| Jun 15, 1975 | Trade | Jesse Jefferson | Baltimore Orioles | Chicago White Sox | Trade |
| Jun 14, 1975 | Trade | Bobby Darwin | Minnesota Twins | Milwaukee Brewers | Trade |
| Jun 14, 1975 | Trade | John Briggs | Milwaukee Brewers | Minnesota Twins | Trade |
| Jun 14, 1975 | Trade | Unnamed | Boston Red Sox | California Angels | $ |
| Jun 14, 1975 | Trade | Denny Doyle | California Angels | Boston Red Sox | Trade |
| Jun 13, 1975 | Trade | Unnamed | Texas Rangers | Cleveland Indians | $100000 |
| Jun 13, 1975 | Trade | Jim Bibby | Texas Rangers | Cleveland Indians | Trade |
| Jun 13, 1975 | Trade | Jackie Brown | Texas Rangers | Cleveland Indians | Trade |
| Jun 13, 1975 | Trade | Rick Waits | Texas Rangers | Cleveland Indians | Trade |
| Jun 13, 1975 | Trade | Gaylord Perry | Cleveland Indians | Texas Rangers | Trade |
| Jun 11, 1975 | Signed as free agent | Leron Lee | — | Los Angeles Dodgers | Free agent signing |
| Jun 11, 1975 | Signed | Steve Ratzer | — | Montreal Expos | Amateur free agent signing |
| Jun 11, 1975 | Trade | Craig Robinson | Atlanta Braves | San Francisco Giants | Trade |
| Jun 11, 1975 | Trade | Ed Goodson | San Francisco Giants | Atlanta Braves | Trade |
| Jun 10, 1975 | Signed | Larry Rothschild | — | Cincinnati Reds | Amateur free agent signing |
| Jun 8, 1975 | Released | Ken Berry | Cleveland Indians | — | Release |
| Jun 7, 1975 | Signed | Dan Quisenberry | — | Kansas City Royals | Amateur free agent signing |
| Jun 7, 1975 | Trade | Roric Harrison | Atlanta Braves | Cleveland Indians | Trade |
| Jun 7, 1975 | Trade | Blue Moon Odom | Cleveland Indians | Atlanta Braves | Trade |
| Jun 4, 1975 | Trade | Ed Brinkman | St. Louis Cardinals | Texas Rangers | Trade |
| Jun 4, 1975 | Trade | Tommy Moore | St. Louis Cardinals | Texas Rangers | Trade |
| Jun 4, 1975 | Trade | Willie Davis | Texas Rangers | St. Louis Cardinals | Trade |
| Jun 2, 1975 | Released | Greg Erardi | Pittsburgh Pirates | — | Release |
| Jun 2, 1975 | Trade | Wayne Nordhagen | Atlanta Braves | St. Louis Cardinals | Trade |
| May 29, 1975 | Signed as free agent | Gary Gentry | — | New York Mets | Free agent signing |
| May 29, 1975 | Trade | Fred Holdsworth | Detroit Tigers | Baltimore Orioles | Trade |
| May 29, 1975 | Trade | Bob Reynolds | Baltimore Orioles | Detroit Tigers | Trade |
| May 28, 1975 | Trade | Ron Reed | Atlanta Braves | St. Louis Cardinals | Trade |
| May 28, 1975 | Trade | Elias Sosa | St. Louis Cardinals | Atlanta Braves | Trade |
| May 28, 1975 | Trade | Ray Sadecki | St. Louis Cardinals | Atlanta Braves | Trade |
| May 27, 1975 | Signed | Domingo Ramos | — | New York Yankees | Amateur free agent signing |
| May 27, 1975 | Trade | Luis Alvarado | Cleveland Indians | St. Louis Cardinals | Trade |
| May 26, 1975 | Released | Rafael Batista | Houston Astros | — | Release |
| May 23, 1975 | Signed as free agent | Chuck Hartenstein | — | San Diego Padres | Free agent signing |
| May 23, 1975 | Trade | Mike Barlow | Oakland Athletics | St. Louis Cardinals | Trade |
| May 21, 1975 | Released | Don Hahn | Philadelphia Phillies | — | Release |
| May 21, 1975 | Signed as free agent | Don Hahn | — | St. Louis Cardinals | Free agent signing |
| May 20, 1975 | Trade | Unnamed | Oakland Athletics | Cleveland Indians | $ |
| May 20, 1975 | Trade | Blue Moon Odom | Oakland Athletics | Cleveland Indians | Trade |
| May 20, 1975 | Trade | Dick Bosman | Cleveland Indians | Oakland Athletics | Trade |
| May 20, 1975 | Trade | Jim Perry | Cleveland Indians | Oakland Athletics | Trade |
| May 18, 1975 | Trade | Ted Martinez | St. Louis Cardinals | Oakland Athletics | Trade |
| May 18, 1975 | Trade | Steve Staniland | Oakland Athletics | St. Louis Cardinals | Trade |
| May 16, 1975 | Trade | Sonny Siebert | San Diego Padres | Oakland Athletics | Trade |
| May 16, 1975 | Trade | Ted Kubiak | Oakland Athletics | San Diego Padres | Trade |
| May 15, 1975 | Released | Leron Lee | Cleveland Indians | — | Release |
| May 15, 1975 | Trade | Jim Essian | Atlanta Braves | Chicago White Sox | Trade |
| May 9, 1975 | Trade | Ron Bryant | San Francisco Giants | St. Louis Cardinals | Trade |
| May 9, 1975 | Trade | Larry Herndon | St. Louis Cardinals | San Francisco Giants | Trade |
| May 9, 1975 | Trade | Tony Gonzalez | St. Louis Cardinals | San Francisco Giants | Trade |
| May 8, 1975 | Released | Gary Gentry | Atlanta Braves | — | Release |
| May 8, 1975 | Trade | Bob Coluccio | Milwaukee Brewers | Chicago White Sox | Trade |
| May 8, 1975 | Trade | Bill Sharp | Chicago White Sox | Milwaukee Brewers | Trade |
| May 7, 1975 | Trade | Unnamed | Philadelphia Phillies | Atlanta Braves | $150000 |
| May 7, 1975 | Trade | Dick Allen | Atlanta Braves | Philadelphia Phillies | Trade |
| May 7, 1975 | Trade | Johnny Oates | Atlanta Braves | Philadelphia Phillies | Trade |
| May 7, 1975 | Trade | Jim Essian | Philadelphia Phillies | Atlanta Braves | Trade |
| May 7, 1975 | Trade | Barry Bonnell | Philadelphia Phillies | Atlanta Braves | Trade |
| May 6, 1975 | Signed as free agent | Doug Corbett | — | Cincinnati Reds | Free agent signing |
| May 5, 1975 | Released | Eddie Leon | New York Yankees | — | Release |
| May 5, 1975 | Released | Orlando Peña | California Angels | — | Release |
| May 5, 1975 | Released | Herb Washington | Oakland Athletics | — | Release |
| May 4, 1975 | Signed | Ken Oberkfell | — | St. Louis Cardinals | Amateur free agent signing |
| May 4, 1975 | Trade | Garry Maddox | San Francisco Giants | Philadelphia Phillies | Trade |
| May 4, 1975 | Trade | Willie Montanez | Philadelphia Phillies | San Francisco Giants | Trade |
| May 2, 1975 | Trade | Geoff Zahn | Los Angeles Dodgers | Chicago Cubs | Trade |
| May 2, 1975 | Trade | Eddie Solomon | Los Angeles Dodgers | Chicago Cubs | Trade |
| May 2, 1975 | Trade | Burt Hooton | Chicago Cubs | Los Angeles Dodgers | Trade |
| May 1, 1975 | Signed as free agent | Tim Ireland | — | Cincinnati Reds | Free agent signing |
| May 1975 | Signed as free agent | Jimmy Rosario | — | Milwaukee Brewers | Free agent signing |
| Apr 30, 1975 | Released | Tim Ireland | Montreal Expos | — | Release |
| Apr 29, 1975 | Trade | Champ Summers | Oakland Athletics | Chicago Cubs | Trade |
| Apr 28, 1975 | Released | Glenn Beckert | San Diego Padres | — | Release |
| Apr 28, 1975 | Trade | Matt Alexander | Chicago Cubs | Oakland Athletics | Trade |
| Apr 28, 1975 | Trade | Buddy Copeland | Oakland Athletics | Chicago Cubs | Trade |
| Apr 25, 1975 | Signed as free agent | Bill Laxton | — | New York Mets | Free agent signing |
| Apr 25, 1975 | Signed as free agent | Eddie Watt | — | Chicago Cubs | Free agent signing |
| Apr 17, 1975 | Trade | Unnamed | Baltimore Orioles | Atlanta Braves | $ |
| Apr 17, 1975 | Trade | Jimmy Freeman | Atlanta Braves | Baltimore Orioles | Trade |
| Apr 17, 1975 | Trade | Earl Williams | Baltimore Orioles | Atlanta Braves | Trade |
| Apr 15, 1975 | Trade | Mac Scarce | New York Mets | Cincinnati Reds | Trade |
| Apr 15, 1975 | Trade | Tom Hall | Cincinnati Reds | New York Mets | Trade |
| Apr 14, 1975 | Signed as free agent | Skip Lockwood | — | Oakland Athletics | Free agent signing |
| Apr 12, 1975 | Signed as free agent | Jesus Alou | — | New York Mets | Free agent signing |
| Apr 11, 1975 | Released | Davey Johnson | Atlanta Braves | — | Release |
| Apr 11, 1975 | Signed as free agent | Claude Osteen | — | Chicago White Sox | Free agent signing |
| Apr 10, 1975 | Released | Doug Corbett | Kansas City Royals | — | Release |
| Apr 10, 1975 | Trade | Dick Woodson | New York Yankees | Atlanta Braves | Trade |
| Apr 10, 1975 | Trade | Dave Cheadle | Atlanta Braves | New York Yankees | Trade |
| Apr 7, 1975 | Signed as free agent | Bob Johnson | — | New York Yankees | Free agent signing |
| Apr 7, 1975 | Signed as free agent | Tony LaRussa | — | Chicago White Sox | Free agent signing |
| Apr 7, 1975 | Released | Bill Laxton | San Diego Padres | — | Release |
| Apr 7, 1975 | Released | Skip Lockwood | New York Yankees | — | Release |
| Apr 7, 1975 | Released | Jose Martinez | Kansas City Royals | — | Release |
| Apr 6, 1975 | Signed as free agent | Billy Grabarkewitz | — | Oakland Athletics | Free agent signing |
| Apr 6, 1975 | Released | Luke Walker | Detroit Tigers | — | Release |
| Apr 6, 1975 | Released | Eddie Watt | Philadelphia Phillies | — | Release |
| Apr 6, 1975 | Trade | Unnamed | Oakland Athletics | Chicago Cubs | $ |
| Apr 6, 1975 | Trade | Jim Todd | Chicago Cubs | Oakland Athletics | Trade |
| Apr 5, 1975 | Signed as free agent | Deron Johnson | — | Chicago White Sox | Free agent signing |
| Apr 5, 1975 | Released | Norm Miller | Los Angeles Dodgers | — | Release |
| Apr 5, 1975 | Signed as free agent | Roger Nelson | — | Oakland Athletics | Free agent signing |
| Apr 5, 1975 | Released | Claude Osteen | St. Louis Cardinals | — | Release |
| Apr 5, 1975 | Trade | Wayne Simpson | Pittsburgh Pirates | Philadelphia Phillies | Trade |
| Apr 5, 1975 | Trade | Bill Robinson | Philadelphia Phillies | Pittsburgh Pirates | Trade |
| Apr 4, 1975 | Released | Tony LaRussa | Pittsburgh Pirates | — | Release |
| Apr 4, 1975 | Trade | Mario Guerrero | Boston Red Sox | St. Louis Cardinals | Trade |
| Apr 4, 1975 | Trade | Joe Nolan | New York Mets | Atlanta Braves | Trade |
| Apr 4, 1975 | Trade | Leo Foster | Atlanta Braves | New York Mets | Trade |
| Apr 3, 1975 | Released | Chuck Hartenstein | San Francisco Giants | — | Release |
| Apr 3, 1975 | Signed as free agent | Randy Hundley | — | San Diego Padres | Free agent signing |
| Apr 3, 1975 | Signed | Jesus Vega | — | Milwaukee Brewers | Amateur free agent signing |
| Apr 2, 1975 | Released | Mark Clear | Philadelphia Phillies | — | Release |
| Apr 2, 1975 | Signed as free agent | Sam McDowell | — | Pittsburgh Pirates | Free agent signing |
| Apr 1, 1975 | Trade | Unnamed | New York Yankees | Chicago White Sox | $ |
| Apr 1, 1975 | Trade | Kenneth Bennett | New York Yankees | Chicago White Sox | Trade |
| Apr 1, 1975 | Trade | Terry Quinn | New York Yankees | Chicago White Sox | Trade |
| Apr 1, 1975 | Trade | Fred Anyzeski | New York Yankees | Chicago White Sox | Trade |
| Apr 1, 1975 | Trade | John Narron | New York Yankees | Chicago White Sox | Trade |
| Apr 1, 1975 | Trade | Ed Herrmann | Chicago White Sox | New York Yankees | Trade |
| Apr 1975 | Released | Ron Diorio | Philadelphia Phillies | — | Release |
| Apr 1975 | Released | Charlie Sands | California Angels | — | Release |
| Apr 1975 | Signed as free agent | Charlie Sands | — | Oakland Athletics | Free agent signing |
| Mar 31, 1975 | Released | John Morris | San Francisco Giants | — | Release |
| Mar 31, 1975 | Released | Horacio Pina | California Angels | — | Release |
| Mar 31, 1975 | Trade | Bob Stinson | Montreal Expos | Kansas City Royals | Trade |
| Mar 30, 1975 | Released | Craig Caskey | St. Louis Cardinals | — | Release (date approximate, per the source) |
| Mar 29, 1975 | Released | Rich Chiles | San Diego Padres | — | Release |
| Mar 29, 1975 | Released | Billy Grabarkewitz | Chicago Cubs | — | Release |
| Mar 29, 1975 | Released | Mel Stottlemyre | New York Yankees | — | Release |
| Mar 29, 1975 | Trade | Danny Godby | St. Louis Cardinals | Boston Red Sox | Trade |
| Mar 29, 1975 | Trade | Danny Cater | Boston Red Sox | St. Louis Cardinals | Trade |
| Mar 29, 1975 | Trade | Reggie Sanders | Detroit Tigers | Atlanta Braves | Trade |
| Mar 29, 1975 | Trade | Jack Pierce | Atlanta Braves | Detroit Tigers | Trade |
| Mar 28, 1975 | Released | Jesus Alou | Oakland Athletics | — | Release |
| Mar 28, 1975 | Released | Paul Casanova | Atlanta Braves | — | Release |
| Mar 28, 1975 | Released | Vicente Romo | San Diego Padres | — | Release |
| Mar 27, 1975 | Released | Steve Blass | Pittsburgh Pirates | — | Release |
| Mar 26, 1975 | Released | Ron Hunt | St. Louis Cardinals | — | Release |
| Mar 26, 1975 | Released | Bob Johnson | Texas Rangers | — | Release |
| Mar 25, 1975 | Released | Roger Nelson | Chicago White Sox | — | Release |
| Mar 22, 1975 | Trade | Ike Hampton | New York Mets | California Angels | Trade |
| Mar 22, 1975 | Trade | Ken Sanders | California Angels | New York Mets | Trade |
| Mar 15, 1975 | Signed as free agent | Juan Marichal | — | Los Angeles Dodgers | Free agent signing |
| Mar 11, 1975 | Trade | Nelson Garcia | Philadelphia Phillies | Cleveland Indians | Trade |
| Mar 11, 1975 | Trade | Tom Hilgendorf | Cleveland Indians | Philadelphia Phillies | Trade |
| Mar 10, 1975 | Signed | Damaso Garcia | — | New York Yankees | Amateur free agent signing |
| Mar 6, 1975 | Released | Dick Green | Oakland Athletics | — | Release |
| Mar 5, 1975 | Signed as free agent | Tony Conigliaro | — | Boston Red Sox | Free agent signing |
| Mar 5, 1975 | Released | Fernando Gonzalez | New York Yankees | — | Release |
| Mar 4, 1975 | Signed as free agent | Byron McLaughlin | — | Baltimore Orioles | Free agent signing |
| Feb 25, 1975 | Trade | Dave Duncan | Cleveland Indians | Baltimore Orioles | Trade |
| Feb 25, 1975 | Trade | Alvin McGrew | Cleveland Indians | Baltimore Orioles | Trade |
| Feb 25, 1975 | Trade | Boog Powell | Baltimore Orioles | Cleveland Indians | Trade |
| Feb 25, 1975 | Trade | Don Hood | Baltimore Orioles | Cleveland Indians | Trade |
| Feb 25, 1975 | Trade | Steve Dunning | Texas Rangers | Chicago White Sox | Trade |
| Feb 25, 1975 | Trade | Stan Perzanowski | Chicago White Sox | Texas Rangers | Trade |
| Feb 25, 1975 | Trade | Milt Wilcox | Cleveland Indians | Chicago Cubs | Trade |
| Feb 25, 1975 | Trade | Dave LaRoche | Chicago Cubs | Cleveland Indians | Trade |
| Feb 25, 1975 | Trade | Brock Davis | Chicago Cubs | Cleveland Indians | Trade |
| Feb 20, 1975 | Signed as free agent | Jerry Johnson | — | San Diego Padres | Free agent signing |
| Feb 20, 1975 | Signed | Albert Williams | — | Pittsburgh Pirates | Amateur free agent signing |
| Feb 19, 1975 | Signed as free agent | Jerry DaVanon | — | Cleveland Indians | Free agent signing |
| Feb 18, 1975 | Signed as free agent | Bill Gogolewski | — | Chicago White Sox | Free agent signing |
| Feb 14, 1975 | Signed as free agent | Lew Krausse | — | Oakland Athletics | Free agent signing |
| Feb 14, 1975 | Trade | Stan Papi | St. Louis Cardinals | Montreal Expos | Trade |
| Feb 14, 1975 | Trade | Craig Caskey | Montreal Expos | St. Louis Cardinals | Trade |
| Feb 13, 1975 | Signed as free agent | Ken Berry | — | Cleveland Indians | Free agent signing |
| Feb 11, 1975 | Released | Bill Gogolewski | Cleveland Indians | — | Release |
| Feb 11, 1975 | Released | Johnny Jeter | Cleveland Indians | — | Release |
| Feb 10, 1975 | Signed as free agent | Wayne Granger | — | Houston Astros | Free agent signing |
| Feb 6, 1975 | Released | Jim Nettles | Detroit Tigers | — | Release |
| Feb 4, 1975 | Signed | Orlando Isales | — | Philadelphia Phillies | Amateur free agent signing |
| Feb 1, 1975 | Signed as free agent | Gene Michael | — | Detroit Tigers | Free agent signing |
| Feb 1, 1975 | Signed as free agent | Norm Miller | — | Los Angeles Dodgers | Free agent signing |
| Feb 1975 | Signed as free agent | Frank Linzy | — | San Diego Padres | Free agent signing |
| Jan 30, 1975 | Signed | Jose Moreno | — | Philadelphia Phillies | Amateur free agent signing |
| Jan 24, 1975 | Released | Ken Berry | Milwaukee Brewers | — | Release |
| Jan 24, 1975 | Signed as free agent | Harmon Killebrew | — | Kansas City Royals | Free agent signing |
| Jan 23, 1975 | Released | Jerry DaVanon | Detroit Tigers | — | Release |
| Jan 23, 1975 | Released | Duke Sims | Texas Rangers | — | Release |
| Jan 22, 1975 | Signed | Juan Berenguer | — | New York Mets | Amateur free agent signing |
| Jan 21, 1975 | Released | Gene Michael | New York Yankees | — | Release |
| Jan 16, 1975 | Released | Harmon Killebrew | Minnesota Twins | — | Release |
| Jan 14, 1975 | Signed as free agent | Joe Hoerner | — | Philadelphia Phillies | Free agent signing |
| Jan 13, 1975 | Trade | Larry Johnson | Cleveland Indians | Montreal Expos | Trade |
| Jan 13, 1975 | Trade | Mike Baldwin | Montreal Expos | Cleveland Indians | Trade |
| Jan 6, 1975 | Signed | Nelson Norman | — | Pittsburgh Pirates | Amateur free agent signing |
| Jan 3, 1975 | Signed as free agent | Gil Rondon | — | California Angels | Free agent signing |
| before the 1975 season | Released | Jimmy Rosario | San Francisco Giants | — | 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.