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The 1946 season’s official transaction log: 332 trades, signings and releases involving major-league clubs, listed newest first.
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| Dec 20, 1946 | Released | Paul Richards | Detroit Tigers | — | Release |
| Dec 19, 1946 | Released | Harry Danning | New York Giants | — | Release |
| Dec 17, 1946 | Released | Pinky Higgins | Boston Red Sox | — | Release |
| Dec 16, 1946 | Trade | Frank Mancuso | St. Louis Browns | Washington Senators | Trade |
| Dec 16, 1946 | Trade | Jake Early | Washington Senators | St. Louis Browns | Trade |
| Dec 15, 1946 | Signed | Lou Brissie | — | Philadelphia Athletics | Amateur free agent signing (date approximate, per the source) |
| Dec 15, 1946 | Signed | Dick Rozek | — | Cleveland Indians | Amateur free agent signing (date approximate, per the source) |
| Dec 13, 1946 | Released | Guy Curtright | Chicago White Sox | — | Release |
| Dec 12, 1946 | Released | George Caster | Detroit Tigers | — | Release |
| Dec 11, 1946 | Signed as free agent | Joe Medwick | — | New York Yankees | Free agent signing |
| Dec 10, 1946 | Released | Gene Desautels | Philadelphia Athletics | — | Release |
| Dec 10, 1946 | Released | Tuck Stainback | Philadelphia Athletics | — | Release |
| Dec 7, 1946 | Trade | Gene Woodling | Cleveland Indians | Pittsburgh Pirates | Trade |
| Dec 7, 1946 | Trade | Al Lopez | Pittsburgh Pirates | Cleveland Indians | Trade |
| Dec 6, 1946 | Trade | Sherm Lollar | Cleveland Indians | New York Yankees | Trade |
| Dec 6, 1946 | Trade | Ray Mack | Cleveland Indians | New York Yankees | Trade |
| Dec 6, 1946 | Trade | Hal Peck | New York Yankees | Cleveland Indians | Trade |
| Dec 6, 1946 | Trade | Al Gettel | New York Yankees | Cleveland Indians | Trade |
| Dec 6, 1946 | Trade | Gene Bearden | New York Yankees | Cleveland Indians | Trade |
| Dec 5, 1946 | Signed as free agent | Red Ruffing | — | Chicago White Sox | Free agent signing |
| Dec 5, 1946 | Trade | Johnny Hutchings | Pittsburgh Pirates | Oakland | Trade |
| Dec 5, 1946 | Trade | Dutch Meyer | Cleveland Indians | New York Yankees | Trade |
| Dec 5, 1946 | Trade | Al Gerheauser | Pittsburgh Pirates | Brooklyn Dodgers | Trade |
| Dec 5, 1946 | Trade | Eddie Basinski | Brooklyn Dodgers | Pittsburgh Pirates | Trade |
| Dec 4, 1946 | Trade | Ed Heusser | Cincinnati Reds | Brooklyn Dodgers | Trade |
| Dec 4, 1946 | Trade | Augie Galan | Brooklyn Dodgers | Cincinnati Reds | Trade |
| Dec 2, 1946 | Released | Dick Bartell | New York Giants | — | Release |
| Dec 2, 1946 | Released | Hal Schumacher | New York Giants | — | Release |
| Nov 21, 1946 | Signed | Jim Brosnan | — | Chicago Cubs | Amateur free agent signing |
| Nov 15, 1946 | Released | Jimmy Brown | Pittsburgh Pirates | — | Release |
| Oct 30, 1946 | Released | Charlie Wagner | Boston Red Sox | — | Release |
| Oct 29, 1946 | Released | Mace Brown | Boston Red Sox | — | Release |
| Oct 29, 1946 | Released | Mike Ryba | Boston Red Sox | — | Release |
| Oct 24, 1946 | Trade | Tiny Bonham | New York Yankees | Pittsburgh Pirates | Trade |
| Oct 24, 1946 | Trade | Arthur Cuccurullo | Pittsburgh Pirates | New York Yankees | Trade |
| Oct 19, 1946 | Released | Lou Ciola | Philadelphia Athletics | — | Release |
| Oct 12, 1946 | Trade | Unnamed | Cleveland Indians | New York Yankees | $ |
| Oct 12, 1946 | Trade | Eddie Bockman | New York Yankees | Cleveland Indians | Trade |
| Oct 11, 1946 | Trade | Joe Gordon | New York Yankees | Cleveland Indians | Trade |
| Oct 11, 1946 | Trade | Allie Reynolds | Cleveland Indians | New York Yankees | Trade |
| Oct 9, 1946 | Released | Billy Jurges | Chicago Cubs | — | Release |
| Oct 9, 1946 | Released | Joe Medwick | Brooklyn Dodgers | — | Release |
| Oct 3, 1946 | Released | Rollie Hemsley | Philadelphia Phillies | — | Release |
| Sep 30, 1946 | Released | Jackie Price | Cleveland Indians | — | Release |
| Sep 30, 1946 | Trade | Bob Elliott | Pittsburgh Pirates | Boston Braves | Trade |
| Sep 30, 1946 | Trade | Hank Camelli | Pittsburgh Pirates | Boston Braves | Trade |
| Sep 30, 1946 | Trade | Billy Herman | Boston Braves | Pittsburgh Pirates | Trade |
| Sep 30, 1946 | Trade | Elmer Singleton | Boston Braves | Pittsburgh Pirates | Trade |
| Sep 30, 1946 | Trade | Stan Wentzel | Boston Braves | Pittsburgh Pirates | Trade |
| Sep 30, 1946 | Trade | Whitey Wietelmann | Boston Braves | Pittsburgh Pirates | Trade |
| Sep 30, 1946 | Trade | Eddie Joost | St. Louis Cardinals | Philadelphia Athletics | Trade |
| Sep 30, 1946 | Trade | Vern Benson | Philadelphia Athletics | St. Louis Cardinals | Trade |
| Sep 30, 1946 | Trade | Russ Derry | Philadelphia Athletics | St. Louis Cardinals | Trade |
| Sep 30, 1946 | Trade | Jake Caulfield | Philadelphia Athletics | St. Louis Cardinals | Trade |
| Sep 28, 1946 | Released | Babe Dahlgren | St. Louis Browns | — | Release |
| Sep 25, 1946 | Trade | Unnamed | Pittsburgh Pirates | Oakland | $35000 |
| Sep 25, 1946 | Trade | Wally Westlake | Oakland | Pittsburgh Pirates | Trade |
| Sep 20, 1946 | Released | Bill Dickey | New York Yankees | — | Release |
| Sep 20, 1946 | Released | Red Ruffing | New York Yankees | — | Release |
| Sep 18, 1946 | Released | Bill Dietrich | Chicago White Sox | — | Release |
| Sep 17, 1946 | Released | Charlie Fox | New York Giants | — | Release |
| Sep 16, 1946 | Released | Red Kress | New York Giants | — | Release |
| Sep 10, 1946 | Released | Roy Lee | New York Giants | — | Release |
| Sep 5, 1946 | Released | Johnny Niggeling | Boston Braves | — | Release |
| Aug 30, 1946 | Signed | Bob Buhl | — | Chicago White Sox | Amateur free agent signing |
| Aug 30, 1946 | Trade | Tony York | Boston Braves | Seattle | Trade |
| Aug 30, 1946 | Trade | Bill Ramsey | Boston Braves | Seattle | Trade |
| Aug 15, 1946 | Signed | Lou Possehl | — | Philadelphia Phillies | Amateur free agent signing |
| Aug 10, 1946 | Signed | Vern Fear | — | Chicago Cubs | Amateur free agent signing |
| Aug 6, 1946 | Signed | Johnny Groth | — | Detroit Tigers | Amateur free agent signing |
| Aug 5, 1946 | Released | Frankie Pytlak | Boston Red Sox | — | Release |
| Aug 2, 1946 | Signed as free agent | Jackie Price | — | Cleveland Indians | Free agent signing with first major-league team |
| Jul 31, 1946 | Released | Jack Niemes | Cincinnati Reds | — | Release |
| Jul 25, 1946 | Released | Earl Henry | Cleveland Indians | — | Release |
| Jul 23, 1946 | Released | Tom Carey | Boston Red Sox | — | Release |
| Jul 15, 1946 | Trade | Frankie Hayes | Cleveland Indians | Chicago White Sox | Trade |
| Jul 8, 1946 | Signed as free agent | Joe Tepsic | — | Brooklyn Dodgers | Free agent signing with first major-league team |
| Jul 4, 1946 | Signed | Al Dark | — | Boston Braves | Amateur free agent signing |
| Jul 4, 1946 | Trade | Tom Jordan | Chicago White Sox | Cleveland Indians | Trade |
| Jul 3, 1946 | Signed as free agent | Russ Bauers | — | Chicago Cubs | Free agent signing |
| Jul 3, 1946 | Released | Buster Mills | Cleveland Indians | — | Release |
| Jul 1, 1946 | Signed as free agent | Johnny Niggeling | — | Boston Braves | Free agent signing |
| Jul 1, 1946 | Signed as free agent | Jimmy Wasdell | — | Cleveland Indians | Free agent signing |
| Jul 1946 | Trade | Bill Howerton | Boston Red Sox | St. Louis Cardinals | Trade |
| Jul 1946 | Trade | Don Lang | Boston Red Sox | St. Louis Cardinals | Trade |
| Jul 1946 | Trade | Jim Gleeson | St. Louis Cardinals | Boston Red Sox | Trade |
| Jun 29, 1946 | Released | Bobby Bragan | Brooklyn Dodgers | — | Release |
| Jun 28, 1946 | Released | Joe Wood | Detroit Tigers | — | Release |
| Jun 27, 1946 | Signed as free agent | Frank Whitman | — | Chicago White Sox | Free agent signing |
| Jun 26, 1946 | Released | Nate Andrews | New York Giants | — | Release |
| Jun 26, 1946 | Trade | Unnamed | Cleveland Indians | Chicago Cubs | $ |
| Jun 26, 1946 | Trade | Mickey Rocco | Cleveland Indians | Chicago Cubs | Trade |
| Jun 26, 1946 | Trade | Heinz Becker | Chicago Cubs | Cleveland Indians | Trade |
| Jun 25, 1946 | Signed as free agent | Joe Medwick | — | Brooklyn Dodgers | Free agent signing |
| Jun 25, 1946 | Released | Johnny Niggeling | Washington Senators | — | Release |
| Jun 21, 1946 | Released | Don Fisher | New York Giants | — | Release |
| Jun 21, 1946 | Released | Charles George | Philadelphia Athletics | — | Release |
| Jun 18, 1946 | Released | Jimmy Wasdell | Philadelphia Phillies | — | Release |
| Jun 16, 1946 | Released | Bob Hall | Detroit Tigers | — | Release |
| Jun 15, 1946 | Signed as free agent | Nate Andrews | — | New York Giants | Free agent signing |
| Jun 15, 1946 | Trade | Billy Herman | Brooklyn Dodgers | Boston Braves | Trade |
| Jun 15, 1946 | Trade | Stew Hofferth | Boston Braves | Brooklyn Dodgers | Trade |
| Jun 15, 1946 | Trade | Joe Grace | St. Louis Browns | Washington Senators | Trade |
| Jun 15, 1946 | Trade | Al LaMacchia | St. Louis Browns | Washington Senators | Trade |
| Jun 15, 1946 | Trade | Jeff Heath | Washington Senators | St. Louis Browns | Trade |
| Jun 14, 1946 | Released | Ted Lyons | Chicago White Sox | — | Release |
| Jun 13, 1946 | Released | Al Milnar | St. Louis Browns | — | Release |
| Jun 12, 1946 | Released | Joe Kuhel | Washington Senators | — | Release |
| Jun 12, 1946 | Signed as free agent | Joe Kuhel | — | Chicago White Sox | Free agent signing |
| Jun 12, 1946 | Trade | Johnny Barrett | Pittsburgh Pirates | Boston Braves | Trade |
| Jun 12, 1946 | Trade | Chuck Workman | Boston Braves | Pittsburgh Pirates | Trade |
| Jun 11, 1946 | Released | Nate Andrews | Cincinnati Reds | — | Release |
| Jun 11, 1946 | Released | Ben Chapman | Philadelphia Phillies | — | Release |
| Jun 10, 1946 | Released | Morrie Arnovich | New York Giants | — | Release |
| Jun 6, 1946 | Released | Joe Cronin | Boston Red Sox | — | Release |
| Jun 5, 1946 | Released | Bill Mueller | Chicago White Sox | — | Release |
| Jun 5, 1946 | Signed as free agent | Bobo Newsom | — | Washington Senators | Free agent signing |
| Jun 3, 1946 | Released | Bobo Newsom | Philadelphia Athletics | — | Release |
| Jun 1946 | Signed | Lee Griffeth | — | Philadelphia Athletics | Amateur free agent signing (date approximate, per the source) |
| May 29, 1946 | Released | Lou Finney | St. Louis Browns | — | Release |
| May 29, 1946 | Released | Steve Sundra | St. Louis Browns | — | Release |
| May 27, 1946 | Released | Bobby Coombs | New York Giants | — | Release |
| May 27, 1946 | Released | Ernie Koy | Philadelphia Phillies | — | Release |
| May 27, 1946 | Released | Hank Schmulbach | St. Louis Browns | — | Release |
| May 21, 1946 | Released | Paul Dean | St. Louis Browns | — | Release |
| May 18, 1946 | Released | Jack Knott | Philadelphia Athletics | — | Release |
| May 18, 1946 | Trade | George Kell | Philadelphia Athletics | Detroit Tigers | Trade |
| May 18, 1946 | Trade | Barney McCosky | Detroit Tigers | Philadelphia Athletics | Trade |
| May 14, 1946 | Signed as free agent | Gene Thompson | — | New York Giants | Free agent signing |
| May 14, 1946 | Released | Ernie White | St. Louis Cardinals | — | Release |
| May 14, 1946 | Signed as free agent | Ernie White | — | Boston Braves | Free agent signing |
| May 13, 1946 | Signed | John Carden | — | New York Giants | Amateur free agent signing |
| May 9, 1946 | Signed as free agent | Bob Klinger | — | Boston Red Sox | Free agent signing (date approximate, per the source) |
| May 8, 1946 | Released | Fred Caligiuri | Philadelphia Athletics | — | Release |
| May 8, 1946 | Released | Ed Levy | Philadelphia Athletics | — | Release |
| May 7, 1946 | Released | Bob Klinger | Pittsburgh Pirates | — | Release |
| May 7, 1946 | Released | Merrill May | Philadelphia Phillies | — | Release |
| May 4, 1946 | Released | Jim Pruett | Philadelphia Athletics | — | Release |
| May 2, 1946 | Signed as free agent | Billy Jurges | — | Chicago Cubs | Free agent signing |
| May 1, 1946 | Released | Curt Davis | Brooklyn Dodgers | — | Release |
| May 1, 1946 | Released | Buddy Hassett | New York Yankees | — | Release |
| May 1, 1946 | Signed as free agent | Si Johnson | — | Boston Braves | Free agent signing |
| May 1, 1946 | Trade | Vince DiMaggio | Philadelphia Phillies | New York Giants | Trade |
| May 1, 1946 | Trade | Clyde Kluttz | New York Giants | Philadelphia Phillies | Trade |
| May 1, 1946 | Trade | Emil Verban | St. Louis Cardinals | Philadelphia Phillies | Trade |
| May 1, 1946 | Trade | Clyde Kluttz | Philadelphia Phillies | St. Louis Cardinals | Trade |
| May 1946 | Signed as free agent | Hal Marnie | — | St. Louis Cardinals | Free agent signing |
| Apr 29, 1946 | Released | Si Johnson | Philadelphia Phillies | — | Release |
| Apr 29, 1946 | Released | Joe Marty | Philadelphia Phillies | — | Release |
| Apr 28, 1946 | Released | Red Roberts | Washington Senators | — | Release |
| Apr 28, 1946 | Signed as free agent | Tuck Stainback | — | Philadelphia Athletics | Free agent signing (date approximate, per the source) |
| Apr 27, 1946 | Released | Lew Riggs | Brooklyn Dodgers | — | Release |
| Apr 26, 1946 | Released | Tom Drake | Brooklyn Dodgers | — | Release |
| Apr 26, 1946 | Released | Tuck Stainback | New York Yankees | — | Release |
| Apr 23, 1946 | Released | Van Mungo | New York Giants | — | Release |
| Apr 22, 1946 | Released | Emmett Mueller | Philadelphia Phillies | — | Release |
| Apr 20, 1946 | Released | Benny Culp | Philadelphia Phillies | — | Release |
| Apr 19, 1946 | Signed | Bob Talbot | — | Chicago Cubs | Amateur free agent signing |
| Apr 18, 1946 | Trade | Unnamed | Cincinnati Reds | Boston Braves | $ |
| Apr 18, 1946 | Trade | Jim Konstanty | Cincinnati Reds | Boston Braves | Trade |
| Apr 18, 1946 | Trade | Max West | Boston Braves | Cincinnati Reds | Trade |
| Apr 16, 1946 | Released | Bill DeKoning | New York Giants | — | Release |
| Apr 16, 1946 | Released | Danny Gardella | New York Giants | — | Release |
| Apr 14, 1946 | Released | Harry Eisenstat | Cleveland Indians | — | Release |
| Apr 13, 1946 | Released | Eddie Carnett | Cleveland Indians | — | Release |
| Apr 13, 1946 | Released | George Yankowski | Philadelphia Athletics | — | Release |
| Apr 12, 1946 | Released | Luis Suarez | Washington Senators | — | Release |
| Apr 12, 1946 | Released | Jug Thesenga | Washington Senators | — | Release |
| Apr 10, 1946 | Released | Pete Appleton | Washington Senators | — | Release |
| Apr 9, 1946 | Released | Bruce Campbell | Washington Senators | — | Release |
| Apr 9, 1946 | Released | Charlie Mead | New York Giants | — | Release |
| Apr 8, 1946 | Released | John Davis | New York Giants | — | Release |
| Apr 8, 1946 | Released | Hugh East | New York Giants | — | Release |
| Apr 8, 1946 | Released | Buck Ross | Philadelphia Phillies | — | Release |
| Apr 5, 1946 | Released | Joe Medwick | St. Louis Browns | — | Release |
| Apr 4, 1946 | Released | Tom Gorman | New York Giants | — | Release |
| Apr 2, 1946 | Released | Eddie Collins | Philadelphia Athletics | — | Release |
| Apr 2, 1946 | Released | Frank Demaree | Philadelphia Athletics | — | Release |
| Apr 2, 1946 | Released | Ernie Kish | Philadelphia Athletics | — | Release |
| Apr 2, 1946 | Trade | Ken Sears | New York Yankees | St. Louis Browns | Trade |
| Apr 2, 1946 | Trade | Milt Byrnes | St. Louis Browns | New York Yankees | Trade |
| Apr 2, 1946 | Trade | Unnamed | St. Louis Browns | New York Yankees | $ |
| Apr 1946 | Released | Hal Marnie | Washington Senators | — | Release |
| Mar 30, 1946 | Released | Crash Davis | Philadelphia Athletics | — | Release |
| Mar 30, 1946 | Released | Joe Gantenbein | Philadelphia Athletics | — | Release |
| Mar 30, 1946 | Released | Bob Harris | Detroit Tigers | — | Release |
| Mar 30, 1946 | Released | Rankin Johnson | Philadelphia Athletics | — | Release |
| Mar 30, 1946 | Released | Benny McCoy | Philadelphia Athletics | — | Release |
| Mar 30, 1946 | Released | Stan Partenheimer | St. Louis Cardinals | — | Release |
| Mar 30, 1946 | Trade | George Estock | Philadelphia Phillies | Pittsburgh Pirates | Trade |
| Mar 29, 1946 | Released | Joe Bowman | Cincinnati Reds | — | Release |
| Mar 29, 1946 | Released | Herb Bremer | Boston Red Sox | — | Release |
| Mar 29, 1946 | Released | Pete Fox | Boston Red Sox | — | Release |
| Mar 29, 1946 | Released | Bob Garbark | Boston Red Sox | — | Release |
| Mar 28, 1946 | Released | Russ Kerns | Detroit Tigers | — | Release |
| Mar 28, 1946 | Released | Milt Welch | Detroit Tigers | — | Release |
| Mar 28, 1946 | Trade | Charlie Brewster | San Diego | Cleveland Indians | Trade (date approximate, per the source) |
| Mar 28, 1946 | Trade | Jim McDonnell | Cleveland Indians | San Diego | Trade (date approximate, per the source) |
| Mar 26, 1946 | Released | Stan Benjamin | Cleveland Indians | — | Release |
| Mar 26, 1946 | Released | Paul O'Dea | Cleveland Indians | — | Release |
| Mar 26, 1946 | Released | Rip Radcliff | Detroit Tigers | — | Release |
| Mar 25, 1946 | Released | Vic Bradford | New York Giants | — | Release |
| Mar 22, 1946 | Released | Russ Bauers | Pittsburgh Pirates | — | Release |
| Mar 22, 1946 | Released | Chubby Dean | Cleveland Indians | — | Release |
| Mar 21, 1946 | Released | Billy Jurges | Boston Braves | — | Release |
| Mar 20, 1946 | Released | Max Butcher | Pittsburgh Pirates | — | Release |
| Mar 20, 1946 | Released | Vern Kennedy | Cincinnati Reds | — | Release |
| Mar 18, 1946 | Released | Frenchy Bordagaray | Brooklyn Dodgers | — | Release |
| Mar 3, 1946 | Signed as free agent | Joe Medwick | — | St. Louis Browns | Free agent signing |
| Feb 26, 1946 | Released | Ray Berres | New York Giants | — | Release |
| Feb 26, 1946 | Released | Izzy Leon | Philadelphia Phillies | — | Release |
| Feb 21, 1946 | Released | Kerby Farrell | Chicago White Sox | — | Release |
| Feb 19, 1946 | Signed | Ralph LaPointe | — | Philadelphia Phillies | Amateur free agent signing |
| Feb 15, 1946 | Released | Joe Orengo | Chicago White Sox | — | Release |
| Feb 11, 1946 | Released | Fabian Gaffke | Cleveland Indians | — | Release |
| Feb 11, 1946 | Released | George Selkirk | New York Yankees | — | Release |
| Feb 9, 1946 | Released | Harlond Clift | Washington Senators | — | Release |
| Feb 9, 1946 | Released | Whit Wyatt | Philadelphia Phillies | — | Release |
| Feb 8, 1946 | Released | Joe Medwick | Boston Braves | — | Release |
| Feb 5, 1946 | Trade | Unnamed | Boston Braves | St. Louis Cardinals | $40000 |
| Feb 5, 1946 | Trade | Johnny Hopp | St. Louis Cardinals | Boston Braves | Trade |
| Feb 5, 1946 | Trade | Eddie Joost | Boston Braves | St. Louis Cardinals | Trade |
| Jan 17, 1946 | Released | Phil Weintraub | New York Giants | — | Release |
| Jan 5, 1946 | Released | Chuck Hostetler | Detroit Tigers | — | Release |
| Jan 5, 1946 | Released | Hub Walker | Detroit Tigers | — | Release |
| Jan 5, 1946 | Trade | Earl Torgeson | Seattle | Boston Braves | Trade |
| Jan 3, 1946 | Trade | Rudy York | Detroit Tigers | Boston Red Sox | Trade |
| Jan 3, 1946 | Trade | Eddie Lake | Boston Red Sox | Detroit Tigers | Trade |
| before the 1946 season | Signed | Al Aber | — | Cleveland Indians | Amateur free agent signing |
| before the 1946 season | Signed | John Andre | — | New York Giants | Amateur free agent signing |
| before the 1946 season | Signed | Bill Antonello | — | Brooklyn Dodgers | Amateur free agent signing |
| before the 1946 season | Signed as free agent | James Atkins | — | Boston Red Sox | Free agent signing with first major-league team |
| before the 1946 season | Signed | Toby Atwell | — | Brooklyn Dodgers | Amateur free agent signing |
| before the 1946 season | Signed | George Bamberger | — | New York Giants | Amateur free agent signing |
| before the 1946 season | Signed | Hank Bauer | — | New York Yankees | Amateur free agent signing |
| before the 1946 season | Signed as free agent | Vern Bickford | — | Boston Braves | Free agent signing with first major-league team |
| before the 1946 season | Signed | Mike Blyzka | — | Chicago White Sox | Amateur free agent signing |
| before the 1946 season | Signed | Bob Borkowski | — | Chicago Cubs | Amateur free agent signing |
| before the 1946 season | Signed | Roger Bowman | — | New York Giants | Amateur free agent signing |
| before the 1946 season | Signed as free agent | Tommy Bridges | — | Detroit Tigers | Free agent signing |
| before the 1946 season | Signed | Harry Bright | — | New York Yankees | Amateur free agent signing |
| before the 1946 season | Signed | Bobby Brown | — | New York Yankees | Amateur free agent signing |
| before the 1946 season | Signed | Hal Brown | — | Boston Red Sox | Amateur free agent signing |
| before the 1946 season | Signed | Tom Burgess | — | St. Louis Cardinals | Amateur free agent signing |
| before the 1946 season | Signed | Harry Byrd | — | Philadelphia Athletics | Amateur free agent signing |
| before the 1946 season | Signed as free agent | Roy Campanella | — | Brooklyn Dodgers | Free agent signing with first major-league team |
| before the 1946 season | Signed | Larry Ciaffone | — | Brooklyn Dodgers | Amateur free agent signing |
| before the 1946 season | Signed | Jackie Collum | — | St. Louis Cardinals | Amateur free agent signing |
| before the 1946 season | Signed | Jack Cusick | — | Philadelphia Phillies | Amateur free agent signing |
| before the 1946 season | Signed | Jim Davis | — | Boston Red Sox | Amateur free agent signing |
| before the 1946 season | Signed | Joe DeMaestri | — | Boston Red Sox | Amateur free agent signing |
| before the 1946 season | Signed | Carl Erskine | — | Brooklyn Dodgers | Amateur free agent signing |
| before the 1946 season | Signed | Frank Fanovich | — | New York Giants | Amateur free agent signing |
| before the 1946 season | Signed | Al Federoff | — | Detroit Tigers | Amateur free agent signing |
| before the 1946 season | Signed | Dee Fondy | — | Brooklyn Dodgers | Amateur free agent signing |
| before the 1946 season | Signed | Bill Glynn | — | Philadelphia Phillies | Amateur free agent signing |
| before the 1946 season | Signed | Tom Gorman | — | New York Yankees | Amateur free agent signing |
| before the 1946 season | Signed as free agent | Red Hardy | — | New York Giants | Free agent signing with first major-league team |
| before the 1946 season | Signed | Grady Hatton | — | Cincinnati Reds | Amateur free agent signing |
| before the 1946 season | Signed | Phil Haugstad | — | Brooklyn Dodgers | Amateur free agent signing |
| before the 1946 season | Signed | Solly Hemus | — | St. Louis Cardinals | Amateur free agent signing |
| before the 1946 season | Signed | Jim Hughes | — | Chicago White Sox | Amateur free agent signing |
| before the 1946 season | Signed | Tom Hurd | — | Chicago White Sox | Amateur free agent signing |
| before the 1946 season | Signed | Spook Jacobs | — | Brooklyn Dodgers | Amateur free agent signing |
| before the 1946 season | Signed | Tony Jacobs | — | Chicago Cubs | Amateur free agent signing |
| before the 1946 season | Signed | Hal Jeffcoat | — | Chicago Cubs | Amateur free agent signing |
| before the 1946 season | Signed | Bill Jennings | — | New York Giants | Amateur free agent signing |
| before the 1946 season | Signed | Dave Jolly | — | St. Louis Browns | Amateur free agent signing |
| before the 1946 season | Signed | Howie Judson | — | Chicago White Sox | Amateur free agent signing |
| before the 1946 season | Signed | Bob Keegan | — | New York Yankees | Amateur free agent signing |
| before the 1946 season | Released | Alex Kellner | Cincinnati Reds | — | Release |
| before the 1946 season | Signed | Nelson King | — | St. Louis Cardinals | Amateur free agent signing |
| before the 1946 season | Signed | Billy Klaus | — | Cleveland Indians | Amateur free agent signing |
| before the 1946 season | Signed | Ted Kluszewski | — | Cincinnati Reds | Amateur free agent signing |
| before the 1946 season | Signed | Clem Koshorek | — | Detroit Tigers | Amateur free agent signing |
| before the 1946 season | Signed | Lou Kretlow | — | Detroit Tigers | Amateur free agent signing |
| before the 1946 season | Signed | Dick Kryhoski | — | New York Yankees | Amateur free agent signing |
| before the 1946 season | Released | Johnny Kucab | Cincinnati Reds | — | Release |
| before the 1946 season | Signed | Ken Lehman | — | Brooklyn Dodgers | Amateur free agent signing |
| before the 1946 season | Signed | Paul Lehner | — | St. Louis Browns | Amateur free agent signing |
| before the 1946 season | Signed | Don Lenhardt | — | St. Louis Browns | Amateur free agent signing |
| before the 1946 season | Signed | Don Liddle | — | Boston Braves | Amateur free agent signing |
| before the 1946 season | Signed | Lou Limmer | — | Philadelphia Athletics | Amateur free agent signing |
| before the 1946 season | Signed | Walt Linden | — | Boston Braves | Amateur free agent signing |
| before the 1946 season | Signed | Dick Littlefield | — | Boston Red Sox | Amateur free agent signing |
| before the 1946 season | Signed | Stan Lopata | — | Philadelphia Phillies | Amateur free agent signing |
| before the 1946 season | Signed | Lynn Lovenguth | — | Philadelphia Phillies | Amateur free agent signing |
| before the 1946 season | Signed | Joe Lutz | — | St. Louis Browns | Amateur free agent signing |
| before the 1946 season | Signed | John Mackinson | — | New York Yankees | Amateur free agent signing |
| before the 1946 season | Signed | Barney Martin | — | New York Giants | Amateur free agent signing |
| before the 1946 season | Signed | Sammy Meeks | — | New York Giants | Amateur free agent signing |
| before the 1946 season | Signed | Sam Mele | — | Boston Red Sox | Amateur free agent signing |
| before the 1946 season | Signed | Dale Mitchell | — | Cleveland Indians | Amateur free agent signing |
| before the 1946 season | Signed | Bill Moisan | — | Chicago Cubs | Amateur free agent signing |
| before the 1946 season | Signed as free agent | Ray Murray | — | Cleveland Indians | Free agent signing with first major-league team |
| before the 1946 season | Signed | Ernie Nevel | — | New York Yankees | Amateur free agent signing |
| before the 1946 season | Signed | Don Newcombe | — | Brooklyn Dodgers | Amateur free agent signing |
| before the 1946 season | Signed | Milt Nielsen | — | Cleveland Indians | Amateur free agent signing |
| before the 1946 season | Signed | Irv Noren | — | Brooklyn Dodgers | Amateur free agent signing |
| before the 1946 season | Signed | Danny O'Connell | — | Brooklyn Dodgers | Amateur free agent signing |
| before the 1946 season | Signed as free agent | Harry Perkowski | — | Cincinnati Reds | Free agent signing with first major-league team |
| before the 1946 season | Signed | John Perkovich | — | Chicago White Sox | Amateur free agent signing |
| before the 1946 season | Signed | Duane Pillette | — | New York Yankees | Amateur free agent signing |
| before the 1946 season | Signed | Bud Podbielan | — | Brooklyn Dodgers | Amateur free agent signing |
| before the 1946 season | Signed | Bob Porterfield | — | New York Yankees | Amateur free agent signing |
| before the 1946 season | Signed | Wally Post | — | Cincinnati Reds | Amateur free agent signing |
| before the 1946 season | Signed | Billy Reed | — | Philadelphia Phillies | Amateur free agent signing |
| before the 1946 season | Signed | Fred Richards | — | Chicago Cubs | Amateur free agent signing |
| before the 1946 season | Signed | Jim Romano | — | Brooklyn Dodgers | Amateur free agent signing |
| before the 1946 season | Signed | Frank Sacka | — | St. Louis Browns | Amateur free agent signing |
| before the 1946 season | Signed | Ed Sanicki | — | Philadelphia Phillies | Amateur free agent signing |
| before the 1946 season | Signed | Bob Scherbarth | — | Boston Red Sox | Amateur free agent signing |
| before the 1946 season | Signed | George Schmees | — | Cincinnati Reds | Amateur free agent signing |
| before the 1946 season | Signed | Bill Serena | — | Detroit Tigers | Amateur free agent signing |
| before the 1946 season | Released | Bud Sheely | Boston Red Sox | — | Release |
| before the 1946 season | Signed as free agent | Bud Sheely | — | Pittsburgh Pirates | Free agent signing |
| before the 1946 season | Signed | Lou Sleater | — | Boston Braves | Amateur free agent signing |
| before the 1946 season | Signed | Frank Smith | — | Chicago Cubs | Amateur free agent signing |
| before the 1946 season | Signed | Dick Strahs | — | Chicago White Sox | Amateur free agent signing |
| before the 1946 season | Signed | Chuck Tanner | — | Boston Braves | Amateur free agent signing |
| before the 1946 season | Signed | Chris Van Cuyk | — | Brooklyn Dodgers | Amateur free agent signing |
| before the 1946 season | Signed | Jay Van Noy | — | St. Louis Cardinals | Amateur free agent signing |
| before the 1946 season | Signed | Frank Verdi | — | New York Yankees | Amateur free agent signing |
| before the 1946 season | Signed | Dick Weik | — | Washington Senators | Amateur free agent signing |
| before the 1946 season | Signed | Bob Wellman | — | Pittsburgh Pirates | Amateur free agent signing |
| before the 1946 season | Signed | Bobby Young | — | St. Louis Cardinals | Amateur free agent signing |
| before the 1946 season | Signed | Sal Yvars | — | New York Giants | Amateur free agent signing |
| before the 1946 season | Signed | George Zuverink | — | St. Louis Cardinals | Amateur free agent signing |
| before the 1946 season | Signed as free agent | Ed Chandler | — | Brooklyn Dodgers | Free agent signing |
| before the 1946 season | Signed as free agent | Johnny Van Cuyk | — | Brooklyn Dodgers | Free agent signing |
| before the 1946 season | Released | Gee Walker | Cincinnati Reds | — | Release |
| before the 1946 season | Signed as free agent | Pat Cooper | — | Philadelphia Athletics | 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.