May 30, 2009

• The Chicago White Sox purchased the contract of pitcher Wes Whisler from Charlotte of the International League (AAA).
• The Houston Astros purchased the contract of second baseman Matt Kata from Round Rock of the Pacific Coast League (AAA).

May 29, 2009

• The Arizona Diamondbacks purchased the contract of pitcher Daniel Schlereth from Mobile of the Southern League (AA).
• The New York Mets acquired outfielder Emil Brown from the San Diego Padres for a player to be named and assigned him to Buffalo of the International League (AAA); acquired pitcher Lance Broadway from the Chicago White Sox for catcher Ramon Castro and assigned him to Buffalo.
• The Washington Nationals purchased the contract of pitcher Mike MacDougal from Syracuse of the International League (AAA).

May 28, 2009

• The Cleveland Indians purchased the contract of pitcher Tomo Ohka from Columbus of the International League (AAA).
• The Oakland Athletics signed pitcher Justin Hampson and assigned him to Sacramento of the Pacific Coast League (AAA).

May 27, 2009

• The Chicago Cubs purchased the contracts of infielder Andres Blanco and pitcher Jason Waddell from Iowa of the Pacific Coast League (AAA).

May 26, 2009

• The Baltimore Orioles purchased the contract of pitcher Jason Berken from Norfolk of the International League (AAA).
• The New York Mets acquired shortstop Wilson Valdez from Cleveland for cash considerations.

May 25, 2009

• The Colorado Rockies purchased the contract of pitcher Josh Fogg from Colorado Springs of the Pacific Coast League (AAA).
• The Milwaukee Brewers purchased the contract of outfielder Frank Catalanotto from Huntsville of the Southern League (AA).
• The Tampa Bay Rays purchased the contract of pitcher Randy Choate from Durham of the International League (AAA).

May 24, 2009

• The Colorado Rockies purchased the contract of catcher Paul Phillips from Colorado Springs of the Pacific Coast League (AAA).
• The Kansas City Royals purchased the contract of pitcher Roman Colon from Omaha.
• The San Francisco Giants purchased the contract of catcher Eli Whiteside from Fresno of the Pacific Coast League (AAA).

May 23, 2009

• The Florida Marlins purchased the contract of pitcher Sean West from Jacksonville of the Southern League (AA).
• The Los Angeles Dodgers signed pitcher Ji-Mo Lee to a minor league contract.
• The Philadelphia Phillies traded pitcher Justin Lehr to the Cincinnati Reds for cash considerations.

May 22, 2009

• The Baltimore Orioles released pitcher Adam Eaton
• The Cincinnati Reds purchased the contract of outfielder Jonny Gomes from Louisville.

May 21, 2009

• The Atlanta Braves purchased the contract of pitcher Kris Medlen from Gwinnett of the International League (AAA).
• The Milwaukee Brewers traded outfielder Tony Gwynn Jr. to the San Diego Padres for outfielder Jody Gerut.
• The San Francisco Giants purchased the contract of outfielder Jesus Guzman from Fresno of the Pacific Coast League (AAA).

May 20, 2009

• The Oakland Athletics claimed pitcher Craig Breslow off waivers from the Minnesota Twins.
• The Philadelphia Phillies claimed pitcher Steven Register off waivers from the Colorado Rockies.

May 19, 2009

• The Minnesota Twins purchased the contract of pitcher Sean Henn from Rochester of the International League (AAA).
• The Oakland Athletics purchased the contracts of pitchers Edgar Gonzalez and Chris Schroder from Sacramento of the Pacific Coast League (AAA).
• The Seattle Mariners signed first baseman Brad Nelson.

May 18, 2009

• The Colorado Rockies purchased the contract of pitcher Joel Peralta from Colorado Springs of the Pacific Coast League (AAA).
• The Florida Marlins purchased the contract of pitcher Brian Sanches from New Orleans of the Pacific Coast League (AAA).
• The New York Mets purchased the contract of second baseman Ramon E. Martinez from Buffalo of the International League (AAA).
• The Pittsburgh Pirates claimed pitcher Steven Jackson off waivers from the New York Yankees; released pitcher Jimmy Barthmaier.

May 17, 2009

• The Cleveland Indians purchased the contract of pitcher Greg Aquino.

May 16, 2009

• The Pittsburgh Pirates traded pitcher Romulo Sanchez to the New York Yankees for pitcher Eric Hacker.

May 15, 2009

• The Colorado Rockies waived pitcher Glendon Rusch; purchased the contract of pitcher Randy Flores from Colorado Springs of the Pacific Coast League (AAA).
• The New York Mets signed catcher Javier Valentin and pitcher Tom Martin to a minor league contracts.
• The San Diego Padres claimed infielder Josh Wilson off waivers from Arizona; requested waivers on pitcher Duaner Sanchez.

May 14, 2009

• The Boston Red Sox acquired left-handed pitcher Kason Gabbard from the Texas Rangers for cash considerations.
• The Cleveland Indians signed pitcher Luis Vizcaino.
• The Detroit Tigers purchased the contract of pitcher Luke French from Toledo of the International League (AAA).
• The Toronto Blue Jays purchased the contract of right-handed pitcher Brian Bullington from Las Vegas of the Pacific Coast League (AAA).

May 11, 2009

• The Chicago White Sox purchased the contract of pitcher Jimmy Gobble from Charlotte of the International League (AAA).
• The Cleveland Indians signed pitcher Blaine Neal to a minor league contract.

May 10, 2009

• The Boston Red Sox purchased the contract of pitcher Daniel Bard from Pawtucket of the International League (AAA).
• The Houston Astros re-signed second baseman Jason Smith.

May 9, 2009

• The New York Yankees purchased the contract of pitcher Brett Tomko from Scranton/Wilkes Barre of the International League (AAA).
• The Oakland Athletics purchased the contract of second baseman Adam Kennedy.
• THe Pittsburgh Pirates signed catcher Adam Melhuse to a minor league contract.
• The Tampa Bay Rays acquired second baseman Joe Dillon from the Oakland Athletics and assigned him to Durham of the International League (AAA), completion of Friday's trade in which the the Atheletics acquired second baseman Adam Kennedy for a player to be named.

May 8, 2009

• The Baltimore Orioles traded infielder/outfielder Ryan Freel and cash considerations for outfielder Joey Gathright .
• The Florida Marlins purchased the contract of second baseman Chris Coghlan from New Orleans of the Pacific Coast League (AAA).
• The New York Yankees purchased the contract of catcher Kevin Cash from Scranton/Wilkes-Barre of the International League (AAA).
• The Oakland Athletics acquired second baseman Adam Kennedy from the Tampa Bay Rays for a player to be named.

May 7, 2009

• The Washington Nationals purchased the contract of pitcher Ron Villone from Syracuse of the International League (AAA).

May 6, 2009

• The Cleveland Indians purchased the contract of pitcher Matt Herges from Columbus of the International League (AAA); released pitcher Juan Salas.

May 3, 2009

• The Kansas City Royals purchased the contract of shortstop Luis Hernandez from Omaha of the Pacific Coast League (AAA).

May 2, 2009

• The Cleveland Indians purchased the contract of outfielder Matt LaPorta from Columbus of the International League (AAA).

May 1, 2009

• The Texas Rangers released pitcher Derrick Turnbow.
• The Toronto Blue Jays purchased the contract of pitcher Brett Cecil.