The Los Angeles Angels of Anaheim signed Cory Aldridge as a free agent.
The St. Louis Cardinals signed Aaron Bates as a free agent.
The Chicago White Sox signed Orlando Hudson as a free agent.
The Los Angeles Dodgers released Shane Lindsay.
The Cincinnati Reds signed Steven Jackson as a free agent.
The Philadelphia Phillies signed Scott Podsednik as a free agent.
The Los Angeles Dodgers released Harvey Garcia.
The Los Angeles Dodgers signed Jon Huber as a free agent.
The Cleveland Indians signed Josh Phelps as a free agent.
The Pittsburgh Pirates traded players to be named later to the Los Angeles Dodgers for Delwyn Young. The Pittsburgh Pirates sent Eric Krebs (minors) (May 22, 2009) and Harvey Garcia (August 1, 2009) to the Los Angeles Dodgers to complete the trade.
The Baltimore Orioles released Adam Eaton.
The Boston Red Sox released Chris George.
The Boston Red Sox released Julian Tavarez.
The Atlanta Braves released Mark Redman.
The Cincinnati Reds released Eric Crozier.
The Chicago Cubs signed Blake Lalli as an amateur free agent.
The Pittsburgh Pirates signed Blaine Neal as a free agent.
The New York Mets released Scott Strickland.
The Detroit Tigers signed Jair Jurrjens as an amateur free agent.
The New York Yankees signed Jose Nieves as a free agent.
The Oakland Athletics traded Jeremy Giambi to the Philadelphia Phillies for John Mabry.
The Kansas City Royals purchased Sal Fasano from the Oakland Athletics.
The Milwaukee Brewers signed Reggie Harris as a free agent.
The Cleveland Indians signed Andrew Lorraine as a free agent.
The Cleveland Indians signed Juan Lara as an amateur free agent.
The Minnesota Twins released Ricky Bones.
The Florida Marlins signed Tim Hyers as a free agent.
The Florida Marlins traded Mike Piazza to the New York Mets for Geoff Goetz (minors), Preston Wilson and Ed Yarnall.
The Boston Red Sox signed Steve Schrenk as a free agent.
The Oakland Athletics released Billy Brewer.
The Tampa Bay Devil Rays signed Humberto Cota as a free agent.
The Texas Rangers released Luis Pineda.
The New York Yankees released Felix Fermin.
The San Francisco Giants released Mel Hall.
The Baltimore Orioles signed Brian Shouse as a free agent.
The Florida Marlins signed Kevin Elster as a free agent.
The Seattle Mariners signed Quinn Mack as a free agent.
The Cincinnati Reds signed Russ Morman as a free agent.
The Philadelphia Phillies signed Don Robinson as a free agent.
The Chicago White Sox signed Mike Dunne as a free agent.
The Oakland Athletics signed Mike Raczka as a free agent.
The Oakland Athletics signed Bryan Clark as a free agent.
The Minnesota Twins signed Sal Butera as a free agent.
The Los Angeles Dodgers traded Tom Niedenfuer to the Baltimore Orioles for Brad Havens and John Shelby.
The Detroit Tigers returned Jim Weaver (earlier draft pick) to the Minnesota Twins.
The Kansas City Royals released Mark Funderburk.
The Chicago Cubs traded Willie Hernandez to the Philadelphia Phillies for Bill Johnson and Dick Ruthven.
The San Diego Padres traded Joe Lefebvre to the Philadelphia Phillies for Sid Monge.
The San Diego Padres traded Kim Seaman to the Montreal Expos for Jerry Manuel.
The Boston Red Sox released Frank Duffy.
The Toronto Blue Jays purchased Joe Coleman from the Oakland Athletics.
The Oakland Athletics traded Stan Bahnsen to the Montreal Expos for Mike Jorgensen.
The Baltimore Orioles signed Dave Huppert as an amateur free agent.
The Cleveland Indians traded Steve Blateric to the Chicago White Sox for Johnny Jeter.
The New York Mets purchased Alex Trevino from Cuidad Victoria (Mexican Center).
The Atlanta Braves traded Tom Heierle (minors) to the Houston Astros for Larry Howard.
The Montreal Expos purchased Mickey Scott from the Baltimore Orioles.
The Oakland Athletics released Ron Klimkowski.
The New York Yankees signed Ron Klimkowski as a free agent.
The Oakland Athletics traded John Donaldson to the Detroit Tigers for Daryl Patterson.
The Cleveland Indians sent Camilo Pascual to the San Diego Padres as part of a conditional deal.
The Detroit Tigers traded Fred Lasher to the Cleveland Indians for Russ Nagelson and Billy Rohr.
The San Diego Padres traded Jerry DaVanon and Bill Davis to the St. Louis Cardinals for Sonny Ruberto and John Sipin.
The Chicago White Sox purchased Jimmy Stewart from the Chicago Cubs.
The Pittsburgh Pirates traded Dick Schofield to the San Francisco Giants for Jose Pagan.
The Cleveland Indians traded Fred Hatfield and $10,000 to the Los Angeles Dodgers for Jim Baxes.
The Philadelphia Phillies released Jim Hearn.
The Philadelphia Phillies signed Elmer Valo as a free agent.
The Chicago White Sox purchased Dixie Howell from the New York Giants for $2,500.
Seattle (PCL) returned Mike Clark (earlier draft pick) to the St. Louis Cardinals.
The St. Louis Browns released Frankie Gustine.
The Detroit Tigers signed Charlie Gehringer as a free agent.
The Brooklyn Dodgers signed Al Campanis as an amateur free agent. (Date given is approximate. Exact date is uncertain.)
The Philadelphia Athletics signed Carl Miles as an amateur free agent.
Oakland (PCL) purchased Cotton Pippen from the Detroit Tigers.
The Cincinnati Reds traded Art Ruble and a player to be named to Oakland (PCL) for Harlin Pool.
The Philadelphia Athletics released Tim McKeithan.
The Chicago Cubs traded a player to be named later to the Brooklyn Robins for Tommy Griffith. The Chicago Cubs sent Bob Barrett (May 22, 1925) to the Brooklyn Robins to complete the trade.
The Pittsburgh Pirates traded Whitey Glazner, Cotton Tierney and $50,000 to the Philadelphia Phillies for Lee Meadows and Johnny Rawlings.
The Brooklyn Robins purchased Bill McCabe from the Chicago Cubs.
The Buffalo Blues signed Harry Lord as a free agent.
The New York Giants traded Red Ames, Josh Devore, Heinie Groh and $20,000 to the Cincinnati Reds for Art Fromme.
The Boston Beaneaters released George Barclay.
The Philadelphia Athletics signed Ossee Schrecongost as a free agent.
The Baltimore Orioles released Stan Yerkes. (Date given is approximate. Exact date is uncertain.)
The Pittsburgh Pirates purchased Jack O'Connor from the St. Louis Cardinals for $2,000.
The New York Giants released Jake Beckley.
The Baltimore Orioles released Harry Stovey.
The Brooklyn Bridegrooms purchased Charlie Reynolds from the Kansas City Cowboys.