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The 1963 season’s official transaction log: 306 trades, signings and releases involving major-league clubs, listed newest first.
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| Dec 16, 1963 | Released | Jim Umbricht | Houston Colt .45s | — | Release |
| Dec 15, 1963 | Trade | Fred Norman | Kansas City Athletics | Chicago Cubs | Trade |
| Dec 15, 1963 | Trade | Nelson Mathews | Chicago Cubs | Kansas City Athletics | Trade |
| Dec 14, 1963 | Trade | Unnamed | Baltimore Orioles | Pittsburgh Pirates | $ |
| Dec 14, 1963 | Trade | Harvey Haddix | Pittsburgh Pirates | Baltimore Orioles | Trade |
| Dec 14, 1963 | Trade | Richard Yencha | Baltimore Orioles | Pittsburgh Pirates | Trade |
| Dec 13, 1963 | Trade | Dick Scott | Los Angeles Dodgers | Chicago Cubs | Trade |
| Dec 13, 1963 | Trade | Jim Brewer | Chicago Cubs | Los Angeles Dodgers | Trade |
| Dec 13, 1963 | Trade | Cuno Barragan | Chicago Cubs | Los Angeles Dodgers | Trade |
| Dec 13, 1963 | Trade | Ted Kazanski | Milwaukee Braves | Baltimore Orioles | Trade |
| Dec 13, 1963 | Trade | Ozzie Virgil | Baltimore Orioles | Milwaukee Braves | Trade |
| Dec 10, 1963 | Trade | Unnamed | Houston Colt .45s | Chicago White Sox | $ |
| Dec 10, 1963 | Trade | Nellie Fox | Chicago White Sox | Houston Colt .45s | Trade |
| Dec 10, 1963 | Trade | Jim Golden | Houston Colt .45s | Chicago White Sox | Trade |
| Dec 10, 1963 | Trade | Danny Murphy | Houston Colt .45s | Chicago White Sox | Trade |
| Dec 6, 1963 | Released | Hobie Landrith | Washington Senators | — | Release |
| Dec 6, 1963 | Released | Carl Sawatski | St. Louis Cardinals | — | Release |
| Dec 6, 1963 | Trade | Joe Adcock | Cleveland Indians | Los Angeles Angels | Trade |
| Dec 5, 1963 | Trade | Don Demeter | Philadelphia Phillies | Detroit Tigers | Trade |
| Dec 5, 1963 | Trade | Jack Hamilton | Philadelphia Phillies | Detroit Tigers | Trade |
| Dec 5, 1963 | Trade | Jim Bunning | Detroit Tigers | Philadelphia Phillies | Trade |
| Dec 5, 1963 | Trade | Gus Triandos | Detroit Tigers | Philadelphia Phillies | Trade |
| Dec 4, 1963 | Trade | Unnamed | Baltimore Orioles | Cleveland Indians | $25000 |
| Dec 4, 1963 | Trade | Al Smith | Baltimore Orioles | Cleveland Indians | Trade |
| Dec 4, 1963 | Trade | Willie Kirkland | Cleveland Indians | Baltimore Orioles | Trade |
| Dec 3, 1963 | Trade | Del Crandall | Milwaukee Braves | San Francisco Giants | Trade |
| Dec 3, 1963 | Trade | Bob Shaw | Milwaukee Braves | San Francisco Giants | Trade |
| Dec 3, 1963 | Trade | Bob Hendley | Milwaukee Braves | San Francisco Giants | Trade |
| Dec 3, 1963 | Trade | Felipe Alou | San Francisco Giants | Milwaukee Braves | Trade |
| Dec 3, 1963 | Trade | Ed Bailey | San Francisco Giants | Milwaukee Braves | Trade |
| Dec 3, 1963 | Trade | Billy Hoeft | San Francisco Giants | Milwaukee Braves | Trade |
| Dec 2, 1963 | Released | Billy Pierce | San Francisco Giants | — | Release |
| Dec 2, 1963 | Signed | Charlie Vinson | — | New York Yankees | Amateur free agent signing |
| Dec 2, 1963 | Trade | Barry Latman | Cleveland Indians | Los Angeles Angels | Trade |
| Dec 2, 1963 | Trade | Leon Wagner | Los Angeles Angels | Cleveland Indians | Trade |
| Nov 30, 1963 | Signed as free agent | Hal Smith | — | Cincinnati Reds | Free agent signing |
| Nov 27, 1963 | Trade | Unnamed | Baltimore Orioles | Kansas City Athletics | $25000 |
| Nov 27, 1963 | Trade | Norm Siebern | Kansas City Athletics | Baltimore Orioles | Trade |
| Nov 27, 1963 | Trade | Jim Gentile | Baltimore Orioles | Kansas City Athletics | Trade |
| Nov 18, 1963 | Signed as free agent | Wally Post | — | Cleveland Indians | Free agent signing |
| Nov 18, 1963 | Trade | Unnamed | Detroit Tigers | Kansas City Athletics | $50000 |
| Nov 18, 1963 | Trade | Jerry Lumpe | Kansas City Athletics | Detroit Tigers | Trade |
| Nov 18, 1963 | Trade | Ed Rakow | Kansas City Athletics | Detroit Tigers | Trade |
| Nov 18, 1963 | Trade | Dave Wickersham | Kansas City Athletics | Detroit Tigers | Trade |
| Nov 18, 1963 | Trade | Rocky Colavito | Detroit Tigers | Kansas City Athletics | Trade |
| Nov 18, 1963 | Trade | Bob Anderson | Detroit Tigers | Kansas City Athletics | Trade |
| Nov 4, 1963 | Trade | George Altman | St. Louis Cardinals | New York Mets | Trade |
| Nov 4, 1963 | Trade | Bill Wakefield | St. Louis Cardinals | New York Mets | Trade |
| Nov 4, 1963 | Trade | Roger Craig | New York Mets | St. Louis Cardinals | Trade |
| Oct 29, 1963 | Released | Yogi Berra | New York Yankees | — | Release |
| Oct 18, 1963 | Released | Jim Lemon | Chicago White Sox | — | Release |
| Oct 18, 1963 | Released | Johnny Logan | Pittsburgh Pirates | — | Release |
| Oct 15, 1963 | Released | Ray Moore | Minnesota Twins | — | Release |
| Oct 15, 1963 | Released | Wally Post | Minnesota Twins | — | Release |
| Oct 15, 1963 | Released | Vic Wertz | Minnesota Twins | — | Release |
| Oct 14, 1963 | Released | Hank Foiles | Los Angeles Angels | — | Release |
| Oct 14, 1963 | Released | Minnie Miñoso | Washington Senators | — | Release |
| Oct 14, 1963 | Released | Tom Morgan | Los Angeles Angels | — | Release |
| Oct 14, 1963 | Released | Bob Turley | Boston Red Sox | — | Release |
| Oct 14, 1963 | Released | Early Wynn | Cleveland Indians | — | Release |
| Oct 14, 1963 | Trade | Bruce Brubaker | Milwaukee Braves | Detroit Tigers | Trade |
| Oct 14, 1963 | Trade | Pat Jarvis | Detroit Tigers | Milwaukee Braves | Trade |
| Oct 9, 1963 | Released | Sam Jones | St. Louis Cardinals | — | Release |
| Oct 8, 1963 | Signed | Steve Carlton | — | St. Louis Cardinals | Amateur free agent signing |
| Oct 7, 1963 | Released | Sammy Esposito | Kansas City Athletics | — | Release |
| Oct 4, 1963 | Released | Alex Grammas | Chicago Cubs | — | Release |
| Oct 4, 1963 | Released | Sherm Lollar | Chicago White Sox | — | Release |
| Oct 4, 1963 | Released | Chet Nichols | Boston Red Sox | — | Release |
| Oct 2, 1963 | Released | Billy Gardner | Boston Red Sox | — | Release |
| Oct 1, 1963 | Released | Hal Smith | Houston Colt .45s | — | Release |
| Oct 1, 1963 | Released | Johnny Temple | Houston Colt .45s | — | Release |
| Oct 1, 1963 | Trade | Jimmie Coker | San Francisco Giants | St. Louis Cardinals | Trade |
| Oct 1, 1963 | Trade | Ken MacKenzie | St. Louis Cardinals | San Francisco Giants | Trade |
| Oct 1963 | Signed | Bill Schlesinger | — | Boston Red Sox | Amateur free agent signing |
| Oct 1963 | Trade | Chico Salmon | Milwaukee Braves | Cleveland Indians | Trade |
| Sep 27, 1963 | Released | Luis Arroyo | New York Yankees | — | Release |
| Sep 20, 1963 | Released | Jim Piersall | Los Angeles Angels | — | Release |
| Sep 13, 1963 | Signed | Jose Morales | — | San Francisco Giants | Amateur free agent signing |
| Sep 8, 1963 | Signed | Dave Dowling | — | St. Louis Cardinals | Amateur free agent signing |
| Sep 6, 1963 | Signed | Al Severinsen | — | Chicago Cubs | Amateur free agent signing |
| Sep 5, 1963 | Signed | Ron Swoboda | — | New York Mets | Amateur free agent signing |
| Sep 2, 1963 | Signed | Steve Hertz | — | Houston Colt .45s | Amateur free agent signing |
| Aug 23, 1963 | Signed | Al Montreuil | — | Boston Red Sox | Amateur free agent signing |
| Aug 16, 1963 | Signed | Jim Palmer | — | Baltimore Orioles | Amateur free agent signing |
| Aug 14, 1963 | Signed | Jim Lonborg | — | Boston Red Sox | Amateur free agent signing |
| Aug 5, 1963 | Trade | Ed Bauta | St. Louis Cardinals | New York Mets | Trade |
| Aug 5, 1963 | Trade | Ken MacKenzie | New York Mets | St. Louis Cardinals | Trade |
| Aug 2, 1963 | Released | Dale Long | New York Yankees | — | Release |
| Aug 1, 1963 | Trade | Sammy Taylor | Cincinnati Reds | Cleveland Indians | Trade |
| Aug 1, 1963 | Trade | Gene Green | Cleveland Indians | Cincinnati Reds | Trade |
| Jul 31, 1963 | Released | Joe Grzenda | Detroit Tigers | — | Release |
| Jul 30, 1963 | Trade | Marv Breeding | Washington Senators | Los Angeles Dodgers | Trade |
| Jul 30, 1963 | Trade | Ed Roebuck | Los Angeles Dodgers | Washington Senators | Trade |
| Jul 29, 1963 | Trade | Unnamed | New York Mets | St. Louis Cardinals | $ |
| Jul 29, 1963 | Trade | Duke Carmel | St. Louis Cardinals | New York Mets | Trade |
| Jul 29, 1963 | Trade | Jacke Davis | New York Mets | St. Louis Cardinals | Trade |
| Jul 27, 1963 | Released | Jim Piersall | New York Mets | — | Release |
| Jul 27, 1963 | Signed as free agent | Jim Piersall | — | Los Angeles Angels | Free agent signing |
| Jul 24, 1963 | Released | Bob Turley | Los Angeles Angels | — | Release |
| Jul 24, 1963 | Signed as free agent | Bob Turley | — | Boston Red Sox | Free agent signing |
| Jul 22, 1963 | Released | Mike Fornieles | Minnesota Twins | — | Release |
| Jul 19, 1963 | Released | Ike Delock | Baltimore Orioles | — | Release |
| Jul 19, 1963 | Released | Daryl Spencer | Cincinnati Reds | — | Release |
| Jul 1, 1963 | Trade | Don Blasingame | Cincinnati Reds | Washington Senators | Trade |
| Jul 1, 1963 | Trade | Jim Coates | Washington Senators | Cincinnati Reds | Trade |
| Jul 1, 1963 | Trade | Jesse Gonder | Cincinnati Reds | New York Mets | Trade |
| Jul 1, 1963 | Trade | Charlie Neal | New York Mets | Cincinnati Reds | Trade |
| Jul 1, 1963 | Trade | Sammy Taylor | New York Mets | Cincinnati Reds | Trade |
| Jun 30, 1963 | Signed | Jay Johnstone | — | Los Angeles Angels | Amateur free agent signing |
| Jun 28, 1963 | Signed | Vic LaRose | — | Los Angeles Angels | Amateur free agent signing |
| Jun 24, 1963 | Trade | Leo Burke | St. Louis Cardinals | Chicago Cubs | Trade |
| Jun 24, 1963 | Trade | Barney Schultz | Chicago Cubs | St. Louis Cardinals | Trade |
| Jun 21, 1963 | Signed | Mike Lum | — | Milwaukee Braves | Amateur free agent signing |
| Jun 21, 1963 | Signed | Reggie Smith | — | Minnesota Twins | Amateur free agent signing |
| Jun 21, 1963 | Signed as free agent | Early Wynn | — | Cleveland Indians | Free agent signing |
| Jun 20, 1963 | Trade | Howie Bedell | Milwaukee Braves | St. Louis Cardinals | Trade (date approximate, per the source) |
| Jun 20, 1963 | Trade | Bobby Tiefenauer | St. Louis Cardinals | Milwaukee Braves | Trade (date approximate, per the source) |
| Jun 19, 1963 | Released | Frank Sullivan | Minnesota Twins | — | Release |
| Jun 18, 1963 | Signed | Archie Moore | — | New York Yankees | Amateur free agent signing |
| Jun 18, 1963 | Signed as free agent | Vic Wertz | — | Minnesota Twins | Free agent signing |
| Jun 16, 1963 | Signed | Gene Stone | — | Philadelphia Phillies | Amateur free agent signing |
| Jun 16, 1963 | Signed | Rick Wise | — | Philadelphia Phillies | Amateur free agent signing |
| Jun 15, 1963 | Signed | Woody Woodward | — | Milwaukee Braves | Amateur free agent signing |
| Jun 15, 1963 | Trade | Lew Burdette | Milwaukee Braves | St. Louis Cardinals | Trade |
| Jun 15, 1963 | Trade | Gene Oliver | St. Louis Cardinals | Milwaukee Braves | Trade |
| Jun 15, 1963 | Trade | Bob Sadowski | St. Louis Cardinals | Milwaukee Braves | Trade |
| Jun 15, 1963 | Trade | Unnamed | Los Angeles Angels | Detroit Tigers | $ |
| Jun 15, 1963 | Trade | George Thomas | Los Angeles Angels | Detroit Tigers | Trade |
| Jun 15, 1963 | Trade | Paul Foytack | Detroit Tigers | Los Angeles Angels | Trade |
| Jun 15, 1963 | Trade | Frank Kostro | Detroit Tigers | Los Angeles Angels | Trade |
| Jun 13, 1963 | Released | Elrod Hendricks | St. Louis Cardinals | — | Release |
| Jun 13, 1963 | Signed | Jim Nash | — | Kansas City Athletics | Amateur free agent signing |
| Jun 12, 1963 | Signed | Darrell Sutherland | — | Philadelphia Phillies | Amateur free agent signing |
| Jun 11, 1963 | Signed | Dave Roberts | — | Philadelphia Phillies | Amateur free agent signing |
| Jun 10, 1963 | Signed | Len Church | — | Chicago Cubs | Amateur free agent signing |
| Jun 9, 1963 | Released | Ike Delock | Boston Red Sox | — | Release |
| Jun 9, 1963 | Signed as free agent | Ike Delock | — | Baltimore Orioles | Free agent signing |
| Jun 7, 1963 | Signed | Bud Harrelson | — | New York Mets | Amateur free agent signing |
| Jun 4, 1963 | Signed | Don Young | — | St. Louis Cardinals | Amateur free agent signing |
| May 31, 1963 | Signed | Dave Bennett | — | Philadelphia Phillies | Amateur free agent signing |
| May 30, 1963 | Signed | John Stephenson | — | New York Mets | Amateur free agent signing |
| May 28, 1963 | Signed | Dick Selma | — | New York Mets | Amateur free agent signing |
| May 26, 1963 | Signed as free agent | Sammy Esposito | — | Kansas City Athletics | Free agent signing |
| May 26, 1963 | Released | Hank Foiles | Cincinnati Reds | — | Release |
| May 26, 1963 | Signed as free agent | Hank Foiles | — | Los Angeles Angels | Free agent signing |
| May 25, 1963 | Signed | Danny Breeden | — | St. Louis Cardinals | Amateur free agent signing |
| May 25, 1963 | Trade | Unnamed | Cleveland Indians | Kansas City Athletics | $100000 |
| May 25, 1963 | Trade | Joe Azcue | Kansas City Athletics | Cleveland Indians | Trade |
| May 25, 1963 | Trade | Dick Howser | Kansas City Athletics | Cleveland Indians | Trade |
| May 25, 1963 | Trade | Doc Edwards | Cleveland Indians | Kansas City Athletics | Trade |
| May 24, 1963 | Signed as free agent | Pete Burnside | — | Washington Senators | Free agent signing |
| May 24, 1963 | Released | Billy Klaus | Philadelphia Phillies | — | Release |
| May 23, 1963 | Trade | Jim Piersall | Washington Senators | New York Mets | Trade |
| May 23, 1963 | Trade | Gil Hodges | New York Mets | Washington Senators | Trade |
| May 23, 1963 | Trade | Bob Skinner | Pittsburgh Pirates | Cincinnati Reds | Trade |
| May 23, 1963 | Trade | Jerry Lynch | Cincinnati Reds | Pittsburgh Pirates | Trade |
| May 21, 1963 | Released | Bill Tuttle | Minnesota Twins | — | Release |
| May 15, 1963 | Signed as free agent | Daryl Spencer | — | Cincinnati Reds | Free agent signing |
| May 14, 1963 | Released | Daryl Spencer | Los Angeles Dodgers | — | Release |
| May 9, 1963 | Released | Pete Burnside | Baltimore Orioles | — | Release |
| May 9, 1963 | Signed | George Culver | — | New York Yankees | Amateur free agent signing |
| May 9, 1963 | Released | Sammy Esposito | Chicago White Sox | — | Release |
| May 8, 1963 | Trade | Unnamed | Milwaukee Braves | Detroit Tigers | $ |
| May 8, 1963 | Trade | Lou Johnson | Milwaukee Braves | Detroit Tigers | Trade |
| May 8, 1963 | Trade | Chico Fernandez | Detroit Tigers | Milwaukee Braves | Trade |
| May 8, 1963 | Trade | Unnamed | New York Mets | Milwaukee Braves | $20000 |
| May 8, 1963 | Trade | Larry Foss | New York Mets | Milwaukee Braves | Trade |
| May 8, 1963 | Trade | Chico Fernandez | Milwaukee Braves | New York Mets | Trade |
| May 5, 1963 | Released | Vic Wertz | Detroit Tigers | — | Release |
| May 5, 1963 | Trade | Dom Zanni | Chicago White Sox | Cincinnati Reds | Trade |
| May 5, 1963 | Trade | Jim Brosnan | Cincinnati Reds | Chicago White Sox | Trade |
| May 2, 1963 | Trade | Jim Perry | Cleveland Indians | Minnesota Twins | Trade |
| May 2, 1963 | Trade | Jack Kralick | Minnesota Twins | Cleveland Indians | Trade |
| May 1963 | Released | Fred Green | Washington Senators | — | Release |
| May 1963 | Signed as free agent | Fred Green | — | Pittsburgh Pirates | Free agent signing |
| Apr 21, 1963 | Trade | Steve Hamilton | Washington Senators | New York Yankees | Trade |
| Apr 21, 1963 | Trade | Jim Coates | New York Yankees | Washington Senators | Trade |
| Apr 19, 1963 | Signed | Hal Breeden | — | Milwaukee Braves | Amateur free agent signing |
| Apr 8, 1963 | Trade | Bob Duliba | St. Louis Cardinals | Los Angeles Angels | Trade |
| Apr 5, 1963 | Trade | Bob Botz | Los Angeles Angels | St. Louis Cardinals | Trade |
| Apr 4, 1963 | Trade | Unnamed | Pittsburgh Pirates | Houston Colt .45s | $ |
| Apr 4, 1963 | Trade | Howie Goss | Pittsburgh Pirates | Houston Colt .45s | Trade |
| Apr 4, 1963 | Trade | Manny Mota | Houston Colt .45s | Pittsburgh Pirates | Trade |
| Apr 1, 1963 | Signed as free agent | Billy Klaus | — | Philadelphia Phillies | Free agent signing |
| Mar 31, 1963 | Signed | Dick Thoenen | — | Philadelphia Phillies | Amateur free agent signing |
| Mar 29, 1963 | Trade | Jacke Davis | Los Angeles Angels | San Francisco Giants | Trade |
| Mar 29, 1963 | Trade | Charlie Dees | San Francisco Giants | Los Angeles Angels | Trade |
| Mar 28, 1963 | Trade | Merritt Ranew | Houston Colt .45s | Chicago Cubs | Trade |
| Mar 28, 1963 | Trade | Hal Haydel | Houston Colt .45s | Chicago Cubs | Trade |
| Mar 28, 1963 | Trade | Dick LeMay | Houston Colt .45s | Chicago Cubs | Trade |
| Mar 28, 1963 | Trade | Dave Gerard | Chicago Cubs | Houston Colt .45s | Trade |
| Mar 28, 1963 | Trade | Danny Murphy | Chicago Cubs | Houston Colt .45s | Trade |
| Mar 23, 1963 | Trade | Wayne Comer | Washington Senators | Detroit Tigers | Trade |
| Mar 23, 1963 | Trade | Bobo Osborne | Detroit Tigers | Washington Senators | Trade |
| Mar 18, 1963 | Trade | Ty Cline | Cleveland Indians | Milwaukee Braves | Trade |
| Mar 8, 1963 | Released | Gene Woodling | New York Mets | — | Release |
| Mar 1963 | Signed as free agent | Ruben Gomez | — | Cleveland Indians | Free agent signing (date approximate, per the source) |
| Feb 27, 1963 | Trade | Jerry Walker | Kansas City Athletics | Cleveland Indians | Trade |
| Feb 27, 1963 | Trade | Chuck Essegian | Cleveland Indians | Kansas City Athletics | Trade |
| Feb 14, 1963 | Trade | Bob Burda | St. Louis Cardinals | Pittsburgh Pirates | Trade |
| Feb 14, 1963 | Trade | Cal Neeman | Pittsburgh Pirates | St. Louis Cardinals | Trade |
| Feb 7, 1963 | Signed | Marcel Lachemann | — | Kansas City Athletics | Amateur free agent signing |
| Feb 4, 1963 | Signed | Roberto Rodriguez | — | Kansas City Athletics | Amateur free agent signing |
| Feb 1963 | Signed as free agent | Coco Laboy | — | St. Louis Cardinals | Free agent signing |
| Feb 1963 | Trade | Bobby Tiefenauer | Houston Colt .45s | St. Louis Cardinals | Trade |
| Feb 1963 | Trade | Don Ferrarese | St. Louis Cardinals | Houston Colt .45s | Trade |
| Jan 24, 1963 | Trade | Scott Breeden | Los Angeles Dodgers | Cincinnati Reds | Trade |
| Jan 24, 1963 | Trade | Don Zimmer | Cincinnati Reds | Los Angeles Dodgers | Trade |
| Jan 21, 1963 | Released | Ruben Gomez | Minnesota Twins | — | Release |
| Jan 14, 1963 | Trade | Al Moran | Boston Red Sox | New York Mets | Trade |
| Jan 14, 1963 | Trade | Hoyt Wilhelm | Baltimore Orioles | Chicago White Sox | Trade |
| Jan 14, 1963 | Trade | Dave Nicholson | Baltimore Orioles | Chicago White Sox | Trade |
| Jan 14, 1963 | Trade | Pete Ward | Baltimore Orioles | Chicago White Sox | Trade |
| Jan 14, 1963 | Trade | Ron Hansen | Baltimore Orioles | Chicago White Sox | Trade |
| Jan 14, 1963 | Trade | Luis Aparicio | Chicago White Sox | Baltimore Orioles | Trade |
| Jan 14, 1963 | Trade | Al Smith | Chicago White Sox | Baltimore Orioles | Trade |
| before the 1963 season | Signed | Dave Adlesh | — | Houston Colt .45s | Amateur free agent signing |
| before the 1963 season | Signed | Dave Bakenhaster | — | St. Louis Cardinals | Amateur free agent signing |
| before the 1963 season | Signed | Lee Bales | — | Milwaukee Braves | Amateur free agent signing |
| before the 1963 season | Signed | Ed Barnowski | — | Baltimore Orioles | Amateur free agent signing |
| before the 1963 season | Signed | Del Bates | — | Los Angeles Angels | Amateur free agent signing |
| before the 1963 season | Signed | Bill Bethea | — | St. Louis Cardinals | Amateur free agent signing |
| before the 1963 season | Signed | Ossie Blanco | — | San Francisco Giants | Amateur free agent signing |
| before the 1963 season | Signed | John Boccabella | — | Chicago Cubs | Amateur free agent signing |
| before the 1963 season | Signed | Dick Bosman | — | Pittsburgh Pirates | Amateur free agent signing |
| before the 1963 season | Signed | Dave Boswell | — | Minnesota Twins | Amateur free agent signing |
| before the 1963 season | Signed | Angel Bravo | — | Chicago White Sox | Amateur free agent signing |
| before the 1963 season | Signed | Nelson Briles | — | St. Louis Cardinals | Amateur free agent signing |
| before the 1963 season | Signed | Tom Brown | — | Washington Senators | Amateur free agent signing |
| before the 1963 season | Signed | Wally Bunker | — | Baltimore Orioles | Amateur free agent signing |
| before the 1963 season | Signed | Frank Coggins | — | Washington Senators | Amateur free agent signing |
| before the 1963 season | Signed | Danny Coombs | — | Houston Colt .45s | Amateur free agent signing |
| before the 1963 season | Signed | Pete Craig | — | Detroit Tigers | Amateur free agent signing |
| before the 1963 season | Signed | Jay Dahl | — | Houston Colt .45s | Amateur free agent signing |
| before the 1963 season | Signed | Brock Davis | — | Houston Colt .45s | Amateur free agent signing |
| before the 1963 season | Signed | Paul Dicken | — | Cleveland Indians | Amateur free agent signing |
| before the 1963 season | Signed | Jack DiLauro | — | Detroit Tigers | Amateur free agent signing |
| before the 1963 season | Signed | John Donaldson | — | Minnesota Twins | Amateur free agent signing |
| before the 1963 season | Signed | Dave Duncan | — | Kansas City Athletics | Amateur free agent signing |
| before the 1963 season | Signed | Bill Edgerton | — | New York Mets | Amateur free agent signing |
| before the 1963 season | Signed | Jim Ellis | — | Chicago Cubs | Amateur free agent signing |
| before the 1963 season | Signed | Mike Fiore | — | New York Mets | Amateur free agent signing |
| before the 1963 season | Signed | Fritz Fisher | — | Detroit Tigers | Amateur free agent signing |
| before the 1963 season | Signed | Roy Foster | — | Pittsburgh Pirates | Amateur free agent signing |
| before the 1963 season | Signed as free agent | Art Fowler | — | Los Angeles Angels | Free agent signing |
| before the 1963 season | Signed | Jim French | — | Washington Senators | Amateur free agent signing |
| before the 1963 season | Signed | Vern Fuller | — | Cleveland Indians | Amateur free agent signing |
| before the 1963 season | Signed | Rob Gardner | — | Minnesota Twins | Amateur free agent signing |
| before the 1963 season | Signed | John Gelnar | — | Pittsburgh Pirates | Amateur free agent signing |
| before the 1963 season | Signed as free agent | Cesar Gutierrez | — | San Francisco Giants | Free agent signing |
| before the 1963 season | Signed | Chuck Harrison | — | Houston Colt .45s | Amateur free agent signing |
| before the 1963 season | Signed | Jerry Hinsley | — | Pittsburgh Pirates | Amateur free agent signing |
| before the 1963 season | Signed | Gomer Hodge | — | Cleveland Indians | Amateur free agent signing |
| before the 1963 season | Signed | John Hoffman | — | Houston Colt .45s | Amateur free agent signing |
| before the 1963 season | Signed | Larry Howard | — | Houston Colt .45s | Amateur free agent signing |
| before the 1963 season | Released | Hank Izquierdo | Cleveland Indians | — | Release |
| before the 1963 season | Signed as free agent | Hank Izquierdo | — | Minnesota Twins | Free agent signing |
| before the 1963 season | Signed | Sonny Jackson | — | Houston Colt .45s | Amateur free agent signing |
| before the 1963 season | Signed | Jerry Johnson | — | New York Mets | Amateur free agent signing |
| before the 1963 season | Signed | Cleon Jones | — | New York Mets | Amateur free agent signing |
| before the 1963 season | Signed as free agent | Sam Jones | — | St. Louis Cardinals | Free agent signing |
| before the 1963 season | Signed | Mike Jurewicz | — | New York Yankees | Amateur free agent signing |
| before the 1963 season | Signed | Tom Kelley | — | Cleveland Indians | Amateur free agent signing |
| before the 1963 season | Released | Coco Laboy | San Francisco Giants | — | Release |
| before the 1963 season | Signed | Dave Leonhard | — | Baltimore Orioles | Amateur free agent signing |
| before the 1963 season | Signed | Paul Lindblad | — | Kansas City Athletics | Amateur free agent signing |
| before the 1963 season | Signed | Ron Locke | — | New York Mets | Amateur free agent signing |
| before the 1963 season | Signed | Charlie Manuel | — | Minnesota Twins | Amateur free agent signing |
| before the 1963 season | Signed | Dave Marshall | — | Los Angeles Angels | Amateur free agent signing |
| before the 1963 season | Signed | John Matias | — | Baltimore Orioles | Amateur free agent signing |
| before the 1963 season | Signed | Billy McCool | — | Cincinnati Reds | Amateur free agent signing |
| before the 1963 season | Signed | Leon McFadden | — | Houston Colt .45s | Amateur free agent signing |
| before the 1963 season | Signed | Rich Morales | — | Chicago White Sox | Amateur free agent signing |
| before the 1963 season | Signed | Ivan Murrell | — | Houston Colt .45s | Amateur free agent signing |
| before the 1963 season | Signed | Roger Nelson | — | Chicago White Sox | Amateur free agent signing |
| before the 1963 season | Signed | Dick Nold | — | Washington Senators | Amateur free agent signing |
| before the 1963 season | Signed | Bob Oliver | — | Pittsburgh Pirates | Amateur free agent signing |
| before the 1963 season | Signed | Jim Ollom | — | New York Yankees | Amateur free agent signing |
| before the 1963 season | Signed | John Paciorek | — | Houston Colt .45s | Amateur free agent signing |
| before the 1963 season | Signed | Wes Parker | — | Los Angeles Dodgers | Amateur free agent signing |
| before the 1963 season | Signed | Sam Parrilla | — | Cleveland Indians | Amateur free agent signing |
| before the 1963 season | Signed | Fritz Peterson | — | New York Yankees | Amateur free agent signing |
| before the 1963 season | Signed | Jim Ray | — | Baltimore Orioles | Amateur free agent signing |
| before the 1963 season | Signed | Tommie Reynolds | — | Kansas City Athletics | Amateur free agent signing |
| before the 1963 season | Signed | Dale Roberts | — | New York Yankees | Amateur free agent signing |
| before the 1963 season | Signed | Billy Rohr | — | Pittsburgh Pirates | Amateur free agent signing |
| before the 1963 season | Signed | Dick Rusteck | — | New York Mets | Amateur free agent signing |
| before the 1963 season | Signed as free agent | Red Schoendienst | — | St. Louis Cardinals | Free agent signing |
| before the 1963 season | Signed | Don Secrist | — | Baltimore Orioles | Amateur free agent signing |
| before the 1963 season | Signed | Rich Severson | — | Chicago White Sox | Amateur free agent signing |
| before the 1963 season | Signed | Sterling Slaughter | — | Chicago Cubs | Amateur free agent signing |
| before the 1963 season | Signed | Joe Sparma | — | Detroit Tigers | Amateur free agent signing |
| before the 1963 season | Signed | Ed Spiezio | — | St. Louis Cardinals | Amateur free agent signing |
| before the 1963 season | Signed | George Spriggs | — | Pittsburgh Pirates | Amateur free agent signing |
| before the 1963 season | Signed | Ron Stone | — | Baltimore Orioles | Amateur free agent signing |
| before the 1963 season | Signed | Ed Stroud | — | Chicago White Sox | Amateur free agent signing |
| before the 1963 season | Signed | Stan Swanson | — | Cincinnati Reds | Amateur free agent signing |
| before the 1963 season | Released | Chuck Tanner | Los Angeles Angels | — | Release |
| before the 1963 season | Signed | Bobby Tolan | — | Pittsburgh Pirates | Amateur free agent signing |
| before the 1963 season | Signed | Jeff Torborg | — | Los Angeles Dodgers | Amateur free agent signing |
| before the 1963 season | Signed | Luke Walker | — | Boston Red Sox | Amateur free agent signing |
| before the 1963 season | Signed | Dave Watkins | — | Detroit Tigers | Amateur free agent signing |
| before the 1963 season | Signed | Ramon Webster | — | Kansas City Athletics | Amateur free agent signing |
| before the 1963 season | Signed | Walt Williams | — | Houston Colt .45s | Amateur free agent signing |
| before the 1963 season | Signed | Larry Yellen | — | Houston Colt .45s | Amateur free agent signing |
| before the 1963 season | Signed | Bart Zeller | — | St. Louis Cardinals | 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.