The Baltimore Orioles signed Josh Barfield as a free agent.
The Pittsburgh Pirates purchased Drew Sutton from the Atlanta Braves.
The Philadelphia Phillies purchased Niuman Romero from the Toronto Blue Jays.
The Arizona Diamondbacks signed Luis Ayala as a free agent.
The Atlanta Braves signed Alejandro Machado as a free agent.
The Pittsburgh Pirates signed Jimmy Barthmaier as a free agent.
The Oakland Athletics selected Craig Breslow off waivers from the Minnesota Twins.
The Philadelphia Phillies selected Steven Register off waivers from the Colorado Rockies.
The San Diego Padres signed Scott Rice as a free agent.
The Oakland Athletics released Bobby Cramer.
The Chicago White Sox released Ray King.
The Oakland Athletics released Todd Linden.
The Houston Astros released Travis Phelps.
The Arizona Diamondbacks released Brian Bruney.
The Cincinnati Reds signed Enerio Del Rosario as an amateur free agent.
The Oakland Athletics traded to the Los Angeles Angels of Anaheim for unknown compensation. Trade was voided and players returned on May 20, 2005.
The San Francisco Giants purchased Jed Hansen from the New York Mets.
The Philadelphia Phillies released Jose Offerman.
The Chicago Cubs released Darren Oliver.
James Baldwin of the New York Mets granted free agency.
The Cleveland Indians released Todd Dunwoody.
The Cleveland Indians signed Raul Gonzalez as a free agent.
The San Diego Padres released Kris Keller.
The Cleveland Indians released Blake Stein.
The Florida Marlins signed Homer Bush as a free agent.
The Chicago Cubs signed David Moraga as a free agent.
The Los Angeles Dodgers signed Francisco Cruceta as an amateur free agent.
Chuck Carr of the Milwaukee Brewers granted free agency.
The Chicago White Sox signed Scott Leius as a free agent.
The San Diego Padres signed Steve Scarsone as a free agent.
The Arizona Diamondbacks released Chad Zerbe.
The Montreal Expos released Torey Lovullo.
The Cleveland Indians signed Torey Lovullo as a free agent.
The Texas Rangers signed Joaquin Benoit as an amateur free agent.
The San Diego Padres signed Mackey Sasser as a free agent.
The San Diego Padres released Juan Agosto.
The Colorado Rockies traded Braulio Castillo to the Houston Astros for Mark Grant.
The Houston Astros signed Oscar Henriquez as an amateur free agent.
The Oakland Athletics released Dwayne Hosey.
The San Diego Padres released Eric Nolte.
The California Angels signed Fernando Valenzuela as a free agent.
The Seattle Mariners signed Ed Vosberg as a free agent.
The Atlanta Braves signed Melvin Nieves as an amateur free agent.
The Minnesota Twins traded a player to be named later and cash to the Oakland Athletics for Keith Atherton. The Minnesota Twins sent Eric Broersma (minors) (May 23, 1986) to the Oakland Athletics to complete the trade.
The Cleveland Indians signed Rod Allen as a free agent.
The Chicago White Sox signed Dave Rozema as a free agent.
The California Angels signed Rufino Linares as a free agent.
The Oakland Athletics traded Chuck Dougherty (minors), Mike Patterson and Dave Revering to the New York Yankees for Jim Spencer and Tom Underwood.
The Cincinnati Reds signed Mike Ramsey as an amateur free agent.
The Cleveland Indians signed Ed Goodson as a free agent.
The Montreal Expos traded Gerry Hannahs and Larry Landreth to the Los Angeles Dodgers for Mike Garman.
The Boston Red Sox signed Bob Ojeda as an amateur free agent.
The New York Mets traded a player to be named later and cash to the Texas Rangers for Lenny Randle. The New York Mets sent Rick Auerbach (May 20, 1977) to the Texas Rangers to complete the trade.
The Seattle Mariners signed Rod Craig as an amateur free agent.
The Oakland Athletics traded Blue Moon Odom and cash to the Cleveland Indians for Dick Bosman and Jim Perry.
The St. Louis Cardinals signed Glenn Brummer as an amateur free agent.
The Montreal Expos signed Hal Dues as an amateur free agent.
The Texas Rangers traded Mike Epstein, Rich Hand and Rick Stelmaszek to the California Angels for Lloyd Allen and Jim Spencer.
The Seattle Pilots traded Jack Aker to the New York Yankees for Fred Talbot.
The Chicago Cubs signed Joey Amalfitano as a free agent.
The New York Mets purchased Gerry Arrigo from the Cincinnati Reds.
Jose Arcia sent from the Cleveland Indians to the St. Louis Cardinals in an unknown transaction.
The Houston Colt .45's purchased Don Larsen from the San Francisco Giants.
The Chicago White Sox released Ted Lepcio.
The St. Louis Cardinals signed Curt Simmons as a free agent.
The Chicago Cubs traded Jim Brosnan to the St. Louis Cardinals for Al Dark.
The Philadelphia Phillies released Roy Smalley.
The Cincinnati Redlegs released Bill Wight.
The Washington Senators selected Rocky Bridges off waivers from the Cincinnati Redlegs.
The Baltimore Orioles purchased Art Houtteman from the Cleveland Indians.
The Brooklyn Dodgers selected Bob Kennedy off waivers from the Chicago White Sox.
The Cleveland Indians signed Eddie Robinson as a free agent.
The Chicago Cubs signed Frank Ernaga as an amateur free agent.
The Chicago White Sox returned Hal Brown (earlier draft pick) to Seattle (PCL). (Date given is approximate. Exact date is uncertain.)
The Boston Braves purchased Elbie Fletcher from the New York Giants.
The Detroit Tigers traded Birdie Tebbetts to the Boston Red Sox for Hal Wagner.
The Brooklyn Dodgers released Ray Hayworth.
The Washington Senators purchased Alex Kampouris from the Brooklyn Dodgers.
The Philadelphia Phillies purchased Newt Kimball from the Brooklyn Dodgers.
The St. Louis Browns released Luke Sewell.
Buffalo (International) purchased Les Scarsella from the Boston Bees.
The Brooklyn Dodgers selected Vito Tamulis off waivers from the St. Louis Browns.
The Washington Senators traded to Indianapolis (American Association) for unknown compensation. Trade was voided and players returned on May 20, 1937.
The Chicago White Sox signed Ed Madjeski as a free agent.
The Philadelphia Athletics traded Jimmie DeShong and cash to Sacramento (PCL) for Tony Freitas.
The New York Yankees selected Lance Richbourg off waivers from the Washington Senators.
The New York Yankees returned Lance Richbourg to the Washington Senators following previous waiver selection.
The Boston Red Sox selected Allan Sothoron off waivers from the St. Louis Browns.
The Cincinnati Reds returned Scott Perry to Atlanta (Southern Association) following previous purchase. (Date given is approximate. Exact date is uncertain.)
The Chicago Cubs purchased Pat Ragan from the Cincinnati Reds.
The Boston Americans purchased Bunk Congalton from the Cleveland Naps.
The Cincinnati Reds released Jimmy Barrett. (Date given is approximate. Exact date is uncertain.)
The Pittsburgh Pirates purchased Ed Phelps from the Cincinnati Reds.
The Cleveland Bronchos signed Harry Bay as a free agent. (Date given is approximate. Exact date is uncertain.)
The New York Giants released Henry Thielman.
The Philadelphia Athletics signed Joe Dolan as a free agent.
Frank Scheibeck jumped from Montreal (Eastern) to the Cleveland Blues. (Date given is approximate. Exact date is uncertain.)
The Boston Beaneaters signed Mike Smith as a free agent.
The Cleveland Blues purchased Phil Reccius from the Louisville Colonels.