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The 1965 season’s official transaction log: 255 trades, signings and releases involving major-league clubs, listed newest first.
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| Dec 15, 1965 | Trade | Unnamed | Houston Astros | California Angels | $ |
| Dec 15, 1965 | Trade | Ed Pacheco | Houston Astros | California Angels | Trade |
| Dec 15, 1965 | Trade | Barry Latman | California Angels | Houston Astros | Trade |
| Dec 15, 1965 | Trade | Lee Thomas | Boston Red Sox | Atlanta Braves | Trade |
| Dec 15, 1965 | Trade | Arnold Earley | Boston Red Sox | Atlanta Braves | Trade |
| Dec 15, 1965 | Trade | Bob Sadowski | Atlanta Braves | Boston Red Sox | Trade |
| Dec 15, 1965 | Trade | Dan Osinski | Atlanta Braves | Boston Red Sox | Trade |
| Dec 15, 1965 | Trade | Dick Tracewski | Los Angeles Dodgers | Detroit Tigers | Trade |
| Dec 15, 1965 | Trade | Phil Regan | Detroit Tigers | Los Angeles Dodgers | Trade |
| Dec 10, 1965 | Trade | Unnamed | New York Yankees | Pittsburgh Pirates | $ |
| Dec 10, 1965 | Trade | Bob Friend | Pittsburgh Pirates | New York Yankees | Trade |
| Dec 10, 1965 | Trade | Pete Mikkelsen | New York Yankees | Pittsburgh Pirates | Trade |
| Dec 9, 1965 | Trade | Frank Robinson | Cincinnati Reds | Baltimore Orioles | Trade |
| Dec 9, 1965 | Trade | Milt Pappas | Baltimore Orioles | Cincinnati Reds | Trade |
| Dec 9, 1965 | Trade | Jack Baldschun | Baltimore Orioles | Cincinnati Reds | Trade |
| Dec 9, 1965 | Trade | Dick Simpson | Baltimore Orioles | Cincinnati Reds | Trade |
| Dec 6, 1965 | Trade | Jack Baldschun | Philadelphia Phillies | Baltimore Orioles | Trade |
| Dec 6, 1965 | Trade | Jackie Brandt | Baltimore Orioles | Philadelphia Phillies | Trade |
| Dec 6, 1965 | Trade | Darold Knowles | Baltimore Orioles | Philadelphia Phillies | Trade |
| Dec 2, 1965 | Trade | Dick Simpson | California Angels | Baltimore Orioles | Trade |
| Dec 2, 1965 | Trade | Norm Siebern | Baltimore Orioles | California Angels | Trade |
| Dec 2, 1965 | Trade | Randy Hundley | San Francisco Giants | Chicago Cubs | Trade |
| Dec 2, 1965 | Trade | Bill Hands | San Francisco Giants | Chicago Cubs | Trade |
| Dec 2, 1965 | Trade | Lindy McDaniel | Chicago Cubs | San Francisco Giants | Trade |
| Dec 2, 1965 | Trade | Don Landrum | Chicago Cubs | San Francisco Giants | Trade |
| Dec 1, 1965 | Trade | Ozzie Virgil | Pittsburgh Pirates | San Francisco Giants | Trade |
| Dec 1, 1965 | Trade | Joe Gibbon | Pittsburgh Pirates | San Francisco Giants | Trade |
| Dec 1, 1965 | Trade | Matty Alou | San Francisco Giants | Pittsburgh Pirates | Trade |
| Dec 1, 1965 | Trade | Unnamed | Houston Astros | Chicago White Sox | $ |
| Dec 1, 1965 | Trade | Jack Lamabe | Houston Astros | Chicago White Sox | Trade |
| Dec 1, 1965 | Trade | Raymond Cordeiro | Houston Astros | Chicago White Sox | Trade |
| Dec 1, 1965 | Trade | Dave Nicholson | Chicago White Sox | Houston Astros | Trade |
| Dec 1, 1965 | Trade | Bill Heath | Chicago White Sox | Houston Astros | Trade |
| Dec 1, 1965 | Trade | Jim Landis | Kansas City Athletics | Cleveland Indians | Trade |
| Dec 1, 1965 | Trade | Jim Rittwage | Kansas City Athletics | Cleveland Indians | Trade |
| Dec 1, 1965 | Trade | Phil Roof | Cleveland Indians | Kansas City Athletics | Trade |
| Dec 1, 1965 | Trade | Joe Rudi | Cleveland Indians | Kansas City Athletics | Trade |
| Nov 30, 1965 | Released | Del Crandall | Pittsburgh Pirates | — | Release |
| Nov 30, 1965 | Signed as free agent | Del Crandall | — | Cleveland Indians | Free agent signing |
| Nov 30, 1965 | Released | Frank Malzone | Boston Red Sox | — | Release |
| Nov 30, 1965 | Signed as free agent | Frank Malzone | — | California Angels | Free agent signing |
| Nov 30, 1965 | Trade | Joe Christopher | New York Mets | Boston Red Sox | Trade |
| Nov 30, 1965 | Trade | Eddie Bressoud | Boston Red Sox | New York Mets | Trade |
| Nov 29, 1965 | Signed as free agent | Lew Burdette | — | California Angels | Free agent signing |
| Nov 29, 1965 | Trade | Ruben Amaro | Philadelphia Phillies | New York Yankees | Trade |
| Nov 29, 1965 | Trade | Phil Linz | New York Yankees | Philadelphia Phillies | Trade |
| Nov 24, 1965 | Trade | Tom Parsons | New York Mets | Houston Astros | Trade |
| Nov 22, 1965 | Released | Bill Virdon | Pittsburgh Pirates | — | Release |
| Nov 19, 1965 | Released | Don Zimmer | Washington Senators | — | Release |
| Oct 29, 1965 | Released | Robin Roberts | Houston Astros | — | Release |
| Oct 27, 1965 | Trade | Bill White | St. Louis Cardinals | Philadelphia Phillies | Trade |
| Oct 27, 1965 | Trade | Dick Groat | St. Louis Cardinals | Philadelphia Phillies | Trade |
| Oct 27, 1965 | Trade | Bob Uecker | St. Louis Cardinals | Philadelphia Phillies | Trade |
| Oct 27, 1965 | Trade | Pat Corrales | Philadelphia Phillies | St. Louis Cardinals | Trade |
| Oct 27, 1965 | Trade | Art Mahaffey | Philadelphia Phillies | St. Louis Cardinals | Trade |
| Oct 27, 1965 | Trade | Alex Johnson | Philadelphia Phillies | St. Louis Cardinals | Trade |
| Oct 22, 1965 | Released | Jim Gilliam | Los Angeles Dodgers | — | Release |
| Oct 22, 1965 | Released | Wally Moon | Los Angeles Dodgers | — | Release |
| Oct 20, 1965 | Trade | Charley Smith | New York Mets | St. Louis Cardinals | Trade |
| Oct 20, 1965 | Trade | Al Jackson | New York Mets | St. Louis Cardinals | Trade |
| Oct 20, 1965 | Trade | Ken Boyer | St. Louis Cardinals | New York Mets | Trade |
| Oct 19, 1965 | Released | Frank Lary | Chicago White Sox | — | Release |
| Oct 19, 1965 | Trade | Unnamed | New York Mets | Houston Astros | $ |
| Oct 19, 1965 | Trade | Jerry Grote | Houston Astros | New York Mets | Trade |
| Oct 15, 1965 | Released | Satchel Paige | Kansas City Athletics | — | Release |
| Oct 15, 1965 | Released | Warren Spahn | San Francisco Giants | — | Release |
| Oct 15, 1965 | Trade | Ernie Fazio | Houston Astros | Kansas City Athletics | Trade |
| Oct 13, 1965 | Released | Lew Burdette | Philadelphia Phillies | — | Release |
| Oct 13, 1965 | Released | Ed Roebuck | Philadelphia Phillies | — | Release |
| Oct 12, 1965 | Signed | Larry Bowa | — | Philadelphia Phillies | Amateur free agent signing |
| Oct 12, 1965 | Trade | Woodie Held | Washington Senators | Baltimore Orioles | Trade |
| Oct 12, 1965 | Trade | John Orsino | Baltimore Orioles | Washington Senators | Trade |
| Oct 4, 1965 | Trade | George Smith | Detroit Tigers | Boston Red Sox | Trade |
| Oct 4, 1965 | Trade | George Thomas | Detroit Tigers | Boston Red Sox | Trade |
| Oct 4, 1965 | Trade | Bill Monbouquette | Boston Red Sox | Detroit Tigers | Trade |
| Sep 25, 1965 | Trade | Ernie Bowman | Milwaukee Braves | New York Mets | Trade (date approximate, per the source) |
| Sep 25, 1965 | Trade | Lou Klimchock | Milwaukee Braves | New York Mets | Trade (date approximate, per the source) |
| Sep 15, 1965 | Trade | Bubba Morton | Cleveland Indians | California Angels | Trade |
| Sep 14, 1965 | Trade | Darrell Brandon | Houston Astros | Boston Red Sox | Trade |
| Sep 14, 1965 | Trade | Jack Lamabe | Boston Red Sox | Houston Astros | Trade |
| Sep 11, 1965 | Released | Ellis Burton | Chicago Cubs | — | Release |
| Sep 11, 1965 | Trade | Mike Sinnerud | Milwaukee Braves | Houston Astros | Trade |
| Sep 10, 1965 | Signed as free agent | Satchel Paige | — | Kansas City Athletics | Free agent signing |
| Sep 1, 1965 | Trade | Frank Thomas | Houston Astros | Milwaukee Braves | Trade |
| Aug 30, 1965 | Signed as free agent | Steve Shea | — | Houston Astros | Free agent signing |
| Aug 28, 1965 | Signed | Reggie Cleveland | — | St. Louis Cardinals | Amateur free agent signing |
| Aug 24, 1965 | Released | Ryne Duren | Washington Senators | — | Release |
| Aug 20, 1965 | Released | Gus Triandos | Houston Astros | — | Release |
| Aug 6, 1965 | Signed as free agent | Robin Roberts | — | Houston Astros | Free agent signing |
| Aug 5, 1965 | Trade | Billy Cowan | New York Mets | Milwaukee Braves | Trade |
| Jul 31, 1965 | Released | Nellie Fox | Houston Astros | — | Release |
| Jul 31, 1965 | Released | Robin Roberts | Baltimore Orioles | — | Release |
| Jul 28, 1965 | Trade | Unnamed | Cincinnati Reds | California Angels | a player to be named |
| Jul 28, 1965 | Trade | Jim Coates | Cincinnati Reds | California Angels | Trade |
| Jul 28, 1965 | Trade | Bobby Locke | California Angels | Cincinnati Reds | Trade |
| Jul 26, 1965 | Trade | Jimmie Schaffer | Chicago White Sox | New York Mets | Trade |
| Jul 21, 1965 | Trade | Jesse Gonder | New York Mets | Milwaukee Braves | Trade |
| Jul 21, 1965 | Trade | Gary Kolb | Milwaukee Braves | New York Mets | Trade |
| Jul 19, 1965 | Signed | Jim Bibby | — | New York Mets | Amateur free agent signing |
| Jul 19, 1965 | Signed as free agent | Warren Spahn | — | San Francisco Giants | Free agent signing |
| Jul 17, 1965 | Released | Warren Spahn | New York Mets | — | Release |
| Jul 14, 1965 | Released | Hal Smith | Pittsburgh Pirates | — | Release |
| Jul 12, 1965 | Released | Tom Butters | Pittsburgh Pirates | — | Release |
| Jul 12, 1965 | Signed | Denny Doyle | — | Philadelphia Phillies | Amateur free agent signing |
| Jul 8, 1965 | Trade | Frank Lary | New York Mets | Chicago White Sox | Trade |
| Jul 6, 1965 | Signed | Woodie Fryman | — | Pittsburgh Pirates | Amateur free agent signing |
| Jul 1, 1965 | Signed as free agent | Hal Smith | — | Pittsburgh Pirates | Free agent signing |
| Jun 20, 1965 | Signed | Don Money | — | Pittsburgh Pirates | Amateur free agent signing |
| Jun 17, 1965 | Signed | Ron Reed | — | Milwaukee Braves | Amateur free agent signing |
| Jun 17, 1965 | Signed | Tony Solaita | — | New York Yankees | Amateur free agent signing |
| Jun 16, 1965 | Trade | Tom Dukes | New York Yankees | Milwaukee Braves | Trade |
| Jun 16, 1965 | Trade | Bobby Tiefenauer | Milwaukee Braves | New York Yankees | Trade |
| Jun 15, 1965 | Released | Dick Donovan | Cleveland Indians | — | Release |
| Jun 15, 1965 | Trade | Hal Woodeshick | Houston Astros | St. Louis Cardinals | Trade |
| Jun 15, 1965 | Trade | Chuck Taylor | Houston Astros | St. Louis Cardinals | Trade |
| Jun 15, 1965 | Trade | Mike Cuellar | St. Louis Cardinals | Houston Astros | Trade |
| Jun 15, 1965 | Trade | Ron Taylor | St. Louis Cardinals | Houston Astros | Trade |
| Jun 15, 1965 | Trade | Unnamed | Cleveland Indians | California Angels | $ |
| Jun 15, 1965 | Trade | Phil Roof | California Angels | Cleveland Indians | Trade |
| Jun 8, 1965 | Signed as free agent | Ryne Duren | — | Washington Senators | Free agent signing |
| Jun 4, 1965 | Trade | Jesse Hickman | Houston Astros | Kansas City Athletics | Trade |
| Jun 4, 1965 | Trade | Jim Gentile | Kansas City Athletics | Houston Astros | Trade |
| Jun 1, 1965 | Released | Ryne Duren | Philadelphia Phillies | — | Release |
| Jun 1, 1965 | Trade | Al Spangler | Houston Astros | California Angels | Trade |
| Jun 1, 1965 | Trade | Don Lee | California Angels | Houston Astros | Trade |
| Jun 1965 | Released | Mike Lee | California Angels | — | Release |
| May 29, 1965 | Trade | Harvey Kuenn | San Francisco Giants | Chicago Cubs | Trade |
| May 29, 1965 | Trade | Ed Bailey | San Francisco Giants | Chicago Cubs | Trade |
| May 29, 1965 | Trade | Bob Hendley | San Francisco Giants | Chicago Cubs | Trade |
| May 29, 1965 | Trade | Dick Bertell | Chicago Cubs | San Francisco Giants | Trade |
| May 29, 1965 | Trade | Len Gabrielson | Chicago Cubs | San Francisco Giants | Trade |
| May 28, 1965 | Signed as free agent | Jim Gilliam | — | Los Angeles Dodgers | Free agent signing |
| May 28, 1965 | Signed as free agent | Don Mossi | — | Kansas City Athletics | Free agent signing |
| May 23, 1965 | Trade | Ken Johnson | Houston Astros | Milwaukee Braves | Trade |
| May 23, 1965 | Trade | Jim Beauchamp | Houston Astros | Milwaukee Braves | Trade |
| May 23, 1965 | Trade | Lee Maye | Milwaukee Braves | Houston Astros | Trade |
| May 22, 1965 | Trade | Dick Schofield | Pittsburgh Pirates | San Francisco Giants | Trade |
| May 22, 1965 | Trade | Jose Pagan | San Francisco Giants | Pittsburgh Pirates | Trade |
| May 17, 1965 | Released | Yogi Berra | New York Mets | — | Release |
| May 15, 1965 | Released | Jackie Hernandez | Cleveland Indians | — | Release |
| May 15, 1965 | Signed as free agent | Jackie Hernandez | — | California Angels | Free agent signing |
| May 15, 1965 | Released | Roy Sievers | Washington Senators | — | Release |
| May 14, 1965 | Released | Gino Cimoli | California Angels | — | Release |
| May 12, 1965 | Signed as free agent | Nellie Fox | — | Houston Astros | Free agent signing |
| May 10, 1965 | Trade | Pedro Gonzalez | New York Yankees | Cleveland Indians | Trade |
| May 10, 1965 | Trade | Ray Barker | Cleveland Indians | New York Yankees | Trade |
| May 4, 1965 | Trade | Jim Duffalo | San Francisco Giants | Cincinnati Reds | Trade |
| May 4, 1965 | Trade | Bill Henry | Cincinnati Reds | San Francisco Giants | Trade |
| May 3, 1965 | Trade | Johnny Blanchard | New York Yankees | Kansas City Athletics | Trade |
| May 3, 1965 | Trade | Rollie Sheldon | New York Yankees | Kansas City Athletics | Trade |
| May 3, 1965 | Trade | Doc Edwards | Kansas City Athletics | New York Yankees | Trade |
| May 1965 | Signed as free agent | Billy Hoeft | — | Chicago Cubs | Free agent signing (date approximate, per the source) |
| Apr 29, 1965 | Signed | George Mitterwald | — | Minnesota Twins | Amateur free agent signing |
| Apr 27, 1965 | Signed as free agent | Yogi Berra | — | New York Mets | Free agent signing |
| Apr 25, 1965 | Signed | Bill Plummer | — | St. Louis Cardinals | Amateur free agent signing |
| Apr 24, 1965 | Trade | Unnamed | Baltimore Orioles | Houston Astros | $ |
| Apr 24, 1965 | Trade | Bob Saverine | Baltimore Orioles | Houston Astros | Trade |
| Apr 24, 1965 | Trade | Don Larsen | Houston Astros | Baltimore Orioles | Trade |
| Apr 17, 1965 | Trade | Bob Duliba | California Angels | Boston Red Sox | Trade (date approximate, per the source) |
| Apr 17, 1965 | Trade | Hal Kolstad | Boston Red Sox | California Angels | Trade (date approximate, per the source) |
| Apr 13, 1965 | Released | Ryne Duren | Cincinnati Reds | — | Release |
| Apr 13, 1965 | Signed as free agent | Ryne Duren | — | Philadelphia Phillies | Free agent signing |
| Apr 11, 1965 | Released | Billy Hoeft | Detroit Tigers | — | Release |
| Apr 10, 1965 | Signed as free agent | Gino Cimoli | — | California Angels | Free agent signing |
| Apr 9, 1965 | Released | Bud Daley | Cleveland Indians | — | Release |
| Apr 9, 1965 | Released | Don Elston | Chicago Cubs | — | Release |
| Apr 7, 1965 | Trade | Bob Humphreys | St. Louis Cardinals | Chicago Cubs | Trade |
| Apr 7, 1965 | Trade | Bobby Pfeil | Chicago Cubs | St. Louis Cardinals | Trade |
| Apr 7, 1965 | Trade | Hal Gilson | Chicago Cubs | St. Louis Cardinals | Trade |
| Apr 5, 1965 | Signed as free agent | Roy Sievers | — | Washington Senators | Free agent signing |
| Apr 4, 1965 | Trade | Unnamed | Washington Senators | Baltimore Orioles | $20000 |
| Apr 4, 1965 | Trade | Stephen Herman | Washington Senators | Baltimore Orioles | Trade |
| Apr 4, 1965 | Trade | Mike McCormick | Baltimore Orioles | Washington Senators | Trade |
| Apr 1965 | Trade | Moose Stubing | San Francisco Giants | St. Louis Cardinals | Trade |
| Apr 1965 | Trade | George Williams | St. Louis Cardinals | San Francisco Giants | Trade |
| Apr 1965 | Trade | Carroll Hardy | Houston Astros | Minnesota Twins | Trade |
| Apr 1965 | Trade | Joseph Christian | Minnesota Twins | Houston Astros | Trade |
| Mar 15, 1965 | Signed as free agent | Harry Bright | — | Chicago Cubs | Free agent signing |
| Mar 2, 1965 | Signed | Gene Rounsaville | — | Philadelphia Phillies | Amateur free agent signing |
| Mar 1, 1965 | Signed | Steve Mingori | — | Cincinnati Reds | Amateur free agent signing |
| Mar 1, 1965 | Signed | Willie Montanez | — | St. Louis Cardinals | Amateur free agent signing |
| Feb 16, 1965 | Released | Bubba Phillips | Detroit Tigers | — | Release |
| Feb 11, 1965 | Trade | Del Crandall | San Francisco Giants | Pittsburgh Pirates | Trade |
| Feb 11, 1965 | Trade | Bob Priddy | Pittsburgh Pirates | San Francisco Giants | Trade |
| Feb 11, 1965 | Trade | Bob Burda | Pittsburgh Pirates | San Francisco Giants | Trade |
| Feb 10, 1965 | Trade | Fred Talbot | Chicago White Sox | Kansas City Athletics | Trade |
| Feb 1, 1965 | Trade | Billy O'Dell | San Francisco Giants | Milwaukee Braves | Trade |
| Feb 1, 1965 | Trade | Ed Bailey | Milwaukee Braves | San Francisco Giants | Trade |
| Feb 1, 1965 | Trade | Julio Gotay | Pittsburgh Pirates | California Angels | Trade (date approximate, per the source) |
| Feb 1, 1965 | Trade | Bob Perry | California Angels | Pittsburgh Pirates | Trade (date approximate, per the source) |
| Jan 31, 1965 | Signed | Bob Watson | — | Houston Astros | Amateur free agent signing |
| Jan 30, 1965 | Signed | Oscar Zamora | — | Cleveland Indians | Amateur free agent signing |
| Jan 26, 1965 | Signed as free agent | Bill Fischer | — | Chicago White Sox | Free agent signing |
| Jan 21, 1965 | Released | Bill Fischer | Minnesota Twins | — | Release |
| Jan 20, 1965 | Trade | Rocky Colavito | Kansas City Athletics | Cleveland Indians | Trade |
| Jan 20, 1965 | Trade | Jim Landis | Chicago White Sox | Kansas City Athletics | Trade |
| Jan 20, 1965 | Trade | Mike Hershberger | Chicago White Sox | Kansas City Athletics | Trade |
| Jan 20, 1965 | Trade | Tommy John | Cleveland Indians | Chicago White Sox | Trade |
| Jan 20, 1965 | Trade | Tommie Agee | Cleveland Indians | Chicago White Sox | Trade |
| Jan 20, 1965 | Trade | John Romano | Cleveland Indians | Chicago White Sox | Trade |
| Jan 20, 1965 | Trade | Cam Carreon | Chicago White Sox | Cleveland Indians | Trade |
| Jan 15, 1965 | Trade | George Altman | New York Mets | Chicago Cubs | Trade |
| Jan 15, 1965 | Trade | Billy Cowan | Chicago Cubs | New York Mets | Trade |
| Jan 2, 1965 | Trade | Dick Egan | Detroit Tigers | St. Louis Cardinals | Trade |
| Jan 2, 1965 | Trade | Glen Hobbie | St. Louis Cardinals | Detroit Tigers | Trade |
| Jan 2, 1965 | Trade | Bob Lipski | St. Louis Cardinals | Detroit Tigers | Trade |
| Jan 1965 | Trade | Tim Talton | San Francisco Giants | Kansas City Athletics | Trade |
| Jan 1965 | Trade | George Alusik | Kansas City Athletics | San Francisco Giants | Trade |
| before the 1965 season | Signed | Doug Adams | — | Chicago White Sox | Amateur free agent signing |
| before the 1965 season | Signed | Dwain Anderson | — | Kansas City Athletics | Amateur free agent signing |
| before the 1965 season | Signed | Rafael Batista | — | Milwaukee Braves | Amateur free agent signing |
| before the 1965 season | Signed | Gary Boyd | — | Cleveland Indians | Amateur free agent signing |
| before the 1965 season | Signed | Curtis Brown | — | New York Mets | Amateur free agent signing |
| before the 1965 season | Released | Gino Cimoli | Baltimore Orioles | — | Release |
| before the 1965 season | Signed | Jim Clark | — | Kansas City Athletics | Amateur free agent signing |
| before the 1965 season | Signed | Rickey Clark | — | Detroit Tigers | Amateur free agent signing |
| before the 1965 season | Signed | Al Closter | — | New York Yankees | Amateur free agent signing |
| before the 1965 season | Signed | Mike Compton | — | Philadelphia Phillies | Amateur free agent signing |
| before the 1965 season | Signed | Mike Corkins | — | San Francisco Giants | Amateur free agent signing |
| before the 1965 season | Signed | Bill Denehy | — | New York Mets | Amateur free agent signing |
| before the 1965 season | Signed | Chuck Dobson | — | Kansas City Athletics | Amateur free agent signing |
| before the 1965 season | Signed | Jim Fairey | — | Los Angeles Dodgers | Amateur free agent signing |
| before the 1965 season | Signed | Al Fitzmorris | — | Chicago White Sox | Amateur free agent signing |
| before the 1965 season | Signed | Shaun Fitzmaurice | — | New York Mets | Amateur free agent signing |
| before the 1965 season | Signed | Paul Gilliford | — | Baltimore Orioles | Amateur free agent signing |
| before the 1965 season | Signed | Wayne Granger | — | St. Louis Cardinals | Amateur free agent signing |
| before the 1965 season | Signed | Roric Harrison | — | Houston Astros | Amateur free agent signing |
| before the 1965 season | Signed | Bill Hepler | — | Washington Senators | Amateur free agent signing |
| before the 1965 season | Released | Ed Hobaugh | Chicago White Sox | — | Release |
| before the 1965 season | Signed as free agent | Ed Hobaugh | — | Pittsburgh Pirates | Free agent signing |
| before the 1965 season | Signed | Jim Holt | — | Kansas City Athletics | Amateur free agent signing |
| before the 1965 season | Signed | Gail Hopkins | — | Chicago White Sox | Amateur free agent signing |
| before the 1965 season | Signed | Gerry Janeski | — | Boston Red Sox | Amateur free agent signing |
| before the 1965 season | Signed | Dick Joyce | — | Kansas City Athletics | Amateur free agent signing |
| before the 1965 season | Signed | Hal King | — | California Angels | Amateur free agent signing |
| before the 1965 season | Signed | George Korince | — | Detroit Tigers | Amateur free agent signing |
| before the 1965 season | Signed | Don Mason | — | Washington Senators | Amateur free agent signing |
| before the 1965 season | Signed | Bill McNulty | — | Kansas City Athletics | Amateur free agent signing |
| before the 1965 season | Signed | Bobby Mitchell | — | Boston Red Sox | Amateur free agent signing |
| before the 1965 season | Signed | Scott Northey | — | Chicago White Sox | Amateur free agent signing |
| before the 1965 season | Signed | Jerry Nyman | — | Chicago White Sox | Amateur free agent signing |
| before the 1965 season | Signed | Don O'Riley | — | Kansas City Athletics | Amateur free agent signing |
| before the 1965 season | Signed | Doug Rader | — | Houston Astros | Amateur free agent signing |
| before the 1965 season | Signed | Wayne Redmond | — | Detroit Tigers | Amateur free agent signing |
| before the 1965 season | Signed | Rick Renick | — | Minnesota Twins | Amateur free agent signing |
| before the 1965 season | Signed | Juan Rios | — | New York Mets | Amateur free agent signing |
| before the 1965 season | Signed | Jimmy Rosario | — | San Francisco Giants | Amateur free agent signing |
| before the 1965 season | Signed | Randy Schwartz | — | Kansas City Athletics | Amateur free agent signing |
| before the 1965 season | Signed | Tom Silverio | — | California Angels | Amateur free agent signing |
| before the 1965 season | Signed | Greg Sims | — | Pittsburgh Pirates | Amateur free agent signing |
| before the 1965 season | Signed as free agent | Bobby Smith | — | California Angels | Free agent signing |
| before the 1965 season | Signed | Leroy Stanton | — | New York Mets | Amateur free agent signing |
| before the 1965 season | Signed | Ken Suarez | — | Kansas City Athletics | Amateur free agent signing |
| before the 1965 season | Signed | Dick Woodson | — | Minnesota Twins | Amateur free agent signing |
| before the 1965 season | Signed | Billy Wynne | — | New York Mets | Amateur free agent signing |
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.