Transactions listed are from November 1 of previous year to April 1 of the following year.
The Boston Braves selected Jack Knight off waivers from the Philadelphia Phillies.
The Brooklyn Robins released Jack Fournier.
The St. Louis Cardinals signed Rabbit Maranville as a free agent.
The Philadelphia Athletics traded Bill Wambsganss and $50,000 to Kansas City (American Association) for Dud Branom.
The St. Louis Cardinals traded Rogers Hornsby to the New York Giants for Frankie Frisch and Jimmy Ring.
The Philadelphia Athletics signed Eddie Collins as a free agent.
The Boston Braves signed Jack Fournier as a free agent.
The Brooklyn Robins released Zack Wheat.
As part of a 3-team trade: The New York Giants sent Jack Scott and Fresco Thompson to the Philadelphia Phillies. The Philadelphia Phillies sent George Harper to the New York Giants. The Philadelphia Phillies sent Butch Henline to the Brooklyn Robins. The Brooklyn Robins sent Burleigh Grimes to the New York Giants.
The Philadelphia Athletics signed Zack Wheat as a free agent.
The New York Yankees traded Aaron Ward to the Chicago White Sox for Johnny Grabowski and Ray Morehart.
The St. Louis Browns traded Pinky Hargrave, Bobby LaMotte and Marty McManus to the Detroit Tigers for Otto Miller, Billy Mullen, Frank O'Rourke and Lefty Stewart.
The Washington Senators traded Roger Peckinpaugh to the Chicago White Sox for Leo Mangum and Sloppy Thurston.
The Detroit Tigers released Ty Cobb.
The Cleveland Indians released Tris Speaker.
The Washington Senators signed Tris Speaker as a free agent.
The Pittsburgh Pirates selected Joe Harris off waivers from the Washington Senators.
The Philadelphia Athletics signed Ty Cobb as a free agent.
The St. Louis Browns traded Cedric Durst and Joe Giard to the New York Yankees for Sam Jones.
The New York Giants traded George Kelly and cash to the Cincinnati Reds for Edd Roush.
Pittsfield (Eastern) purchased Sid Womack from the Boston Braves.
The Washington Senators purchased Mickey O'Neil from the Brooklyn Robins.
The Washington Senators traded Buddy Myer to the Boston Red Sox for Topper Rigney.
The St. Louis Cardinals traded Jake Flowers to the Brooklyn Robins for Bob McGraw.
The New York Giants purchased Don Songer from the Pittsburgh Pirates.
The New York Giants purchased Mickey O'Neil from the Washington Senators.
The Philadelphia Phillies traded Hal Carlson to the Chicago Cubs for Jimmy Cooney and Tony Kaufmann.
The Cleveland Indians purchased Baby Doll Jacobson from the Boston Red Sox.
The New York Giants traded Doc Farrell, Kent Greenfield and Hugh McQuillan to the Boston Braves for Larry Benton, Zack Taylor and Herb Thomas.
The Chicago Cubs purchased Wayland Dean from the Philadelphia Phillies.
The Chicago White Sox purchased Bernie Neis from the Cleveland Indians.
The Washington Senators released Stan Coveleski.
The Boston Braves signed Dinny McNamara as a free agent.
The Pittsburgh Pirates signed Heinie Groh as a free agent.
The Washington Senators traded Alvin Crowder to the St. Louis Browns for Tom Zachary.
The Chicago Cubs purchased Fred Haney from the Boston Red Sox.
The New York Giants selected Les Mann off waivers from the Boston Braves.
The Boston Braves purchased Luke Urban from Toledo (American Association).
The Boston Braves purchased Sid Graves from Lynn (New England).
The Philadelphia Athletics selected Baby Doll Jacobson off waivers from the Cleveland Indians.
The Brooklyn Robins purchased Al Lopez from Jacksonville (Southeastern) for $10,000.
The Boston Braves purchased Guy Morrison from Waterbury (Eastern).
The Boston Braves purchased Charlie Fitzberger from Providence (Eastern).
The Chicago Cubs purchased Art Nehf from the Cincinnati Reds.
The St. Louis Cardinals purchased Tony Kaufmann from the Philadelphia Phillies.
The New York Giants selected Norman Plitt off waivers from the Brooklyn Robins.
The Cleveland Indians drafted Bill Bayne from Toronto (International) in the 1927 rule 5 draft.
The Philadelphia Phillies drafted Ray Benge from Waco (Texas) in the 1927 rule 5 draft.
The St. Louis Cardinals drafted Spud Davis from Buffalo (International) in the 1927 rule 5 draft.
The Boston Braves drafted Art Delaney from Oakland (PCL) in the 1927 rule 5 draft.
The Cincinnati Reds drafted Jim Joe Edwards from Seattle (PCL) in the 1927 rule 5 draft.
The Brooklyn Robins drafted Howard Freigau from Kansas City (American Association) in the 1927 rule 5 draft.
The Boston Red Sox drafted Johnnie Heving from Toledo (American Association) in the 1927 rule 5 draft.
The Brooklyn Robins drafted Lou Koupal from Indianapolis (American Association) in the 1927 rule 5 draft.
The St. Louis Browns drafted Clyde Manion from Newark (International) in the 1927 rule 5 draft.
The Chicago White Sox drafted Johnny Mann from Wichita Falls (Texas) in the 1927 rule 5 draft.
The Chicago Cubs drafted Norm McMillan from St Paul (American Association) in the 1927 rule 5 draft.
The Washington Senators drafted Hugh McMullen from Louisville (American Association) in the 1927 rule 5 draft.
The New York Giants drafted Chet Nichols from Jersey City (International) in the 1927 rule 5 draft.
The New York Giants drafted Lefty O'Doul from San Francisco (PCL) in the 1927 rule 5 draft.
The Chicago White Sox drafted Buck Redfern from Fort Worth (Texas) in the 1927 rule 5 draft.
The Philadelphia Phillies drafted Pinky Whitney from New Orleans (Southern Association) in the 1927 rule 5 draft.
The Boston Braves drafted Earl Williams from Ashville (South Atlantic) in the 1927 rule 5 draft.
The Cleveland Indians drafted Frank Wilson from Milwaukee (American Association) in the 1927 rule 5 draft.
The Brooklyn Robins signed Dave Bancroft as a free agent.
The Boston Braves released Dave Bancroft.
The Washington Senators traded Dick Coffman and Earl McNeely to the St. Louis Browns for Milt Gaston and Sam Jones.
The Pittsburgh Pirates traded Kiki Cuyler to the Chicago Cubs for Sparky Adams and Pete Scott.
The Boston Braves released Jack Fournier.
The Cleveland Indians selected Grover Hartley off waivers from the Boston Red Sox.
The Philadelphia Phillies purchased Bob McGraw from the St. Louis Cardinals.
The St. Louis Browns purchased Chick Galloway from the Philadelphia Athletics.
The St. Louis Browns traded Chick Galloway, Harry Rice and Elam Vangilder to the Detroit Tigers for Lu Blue and Heinie Manush.
The Boston Braves released Dick Rudolph.
Wichita Falls (Texas) traded Fred Fussell to the Pittsburgh Pirates for Mike Cvengros and Ike Danning.
The Chicago Cubs purchased Johnny Butler from the Brooklyn Robins.
The St. Louis Browns traded Bing Miller to the Philadelphia Athletics for Dolly Gray.
The St. Louis Cardinals traded Jimmy Ring and Johnny Schulte to the Philadelphia Phillies for Jimmy Cooney, Bubber Jonnard and Johnny Mokan.
The St. Louis Cardinals purchased Frank Gibson from the Boston Braves.
The Washington Senators purchased George Sisler from the St. Louis Browns for $25,000.
The Boston Red Sox purchased Ken Williams from the St. Louis Browns for $10,000.
Heinie Mueller sent from the New York Giants to Toledo (American Association) in an unknown transaction.
The New York Yankees signed Stan Coveleski as a free agent.
The New York Yankees purchased Bill Dickey from Jackson (Cotton States) for $12,000.
The New York Yankees traded Lyn Lary and $100,000 to Oakland (PCL) for Jimmie Reese.
The New York Giants traded Rogers Hornsby to the Boston Braves for Shanty Hogan and Jimmy Welsh.
The Detroit Tigers traded Rip Collins to Toronto (International) for Vic Sorrell.
The Washington Senators released Tris Speaker.
The Boston Braves selected Jimmy Cooney off waivers from the St. Louis Cardinals.
The Philadelphia Athletics signed Tris Speaker as a free agent.
The Pittsburgh Pirates traded Vic Aldridge to the New York Giants for Burleigh Grimes.
The Boston Braves selected Zack Taylor off waivers from the New York Giants.
The Cleveland Indians selected Aaron Ward off waivers from the Chicago White Sox.
The Brooklyn Robins selected Rube Bressler off waivers from the Cincinnati Reds.
The Boston Braves traded Andy High and $25,000 to the St. Louis Cardinals for Les Bell.
Beaumont (Texas) purchased Carl Hubbell from the Detroit Tigers.
Kansas City (American Association) purchased Joe Cronin from the Pittsburgh Pirates.