May 31, 2013

• The Cleveland Indians agreed to terms with RHP Chris Jakubauskas on a minor league contract.
• The Philadelphia Phillies released RHP Chad Durbin.

May 29, 2013

• The Chicago White Sox agreed to terms with OF Alex Llanos on a minor league contract.

May 27, 2013

• The Chicago Cubs claimed RHP Alex Burnett off waivers from Baltimore.

May 26, 2013

• The Boston Red Sox agreed to terms with LHP Rafael Perez on a minor league contract.
• The Chicago White Sox traded INF Drew Garcia to Colorado for a player to be named.
• The Oakland Athletics agreed to terms with LHP Shaeffer Hall on a minor league contract.

May 25, 2013

• The Chicago White Sox agreed to terms with OF Josh Richmond on a minor league contract.
• The Texas Rangers claimed OF Joe Benson off waivers from Minnesota.

May 23, 2013

• The Texas Rangers signed INF-OF Mark Teahen to a minor league contract.

May 21, 2013

• The Chicago Cubs claimed RHP Eduardo Sanchez off waivers from St. Louis.

May 20, 2013

• The New York Mets agreed to terms with RHP David Aardsma on a minor league contract.

May 19, 2013

• The Los Angeles Angels claimed INF Chris Nelson off waivers from the N.Y. Yankees.
• The San Diego Padres agreed to terms with OF Mike Wilson on a minor league contract.
• The Toronto Blue Jays claimed RHP Thad Weber off waivers from San Diego.

May 18, 2013

• The New York Yankees acquired INF Reid Brignac from the Colorado for cash.

May 17, 2013

• The Minnesota Twins released LHP Rafael Perez.

May 15, 2013

• The Philadelphia Phillies agreed to terms with RHP Carlos Zambrano on a minor league contract.
• The San Diego Padres released RHP Fautino De Los Santos.
• The Texas Rangers agreed to terms with RHP Scott Richmond on a minor league contract.

May 13, 2013

• The Chicago Cubs agreed to terms with 1B Anthony Rizzo on a seven-year contract.
• The New York Mets agreed to terms with OF Rick Ankiel on a one-year contract.

May 12, 2013

• The Houston Astros agreed to terms with RHP Edgar Gonzalez.

May 11, 2013

• The San Diego Padres agreed to terms with RHP Trevor Holder on a minor league contract.

May 9, 2013

• The Kansas City Royals traded 3B Brandon Wood to Baltimore for future considerations.

May 8, 2013

• The Philadelphia Phillies agreed to terms with LHP Bobby Bramhall on a minor league contract.

May 7, 2013

• The Chicago White Sox claimed 1B Mike McDade off waivers from Cleveland.

May 6, 2013

• The Philadelphia Phillies agreed to terms with LHP Greg Smith on a minor league contract.

May 5, 2013

• The Milwaukee Brewers agreed to terms with RHP Tim Dillard on a minor league contract.

May 4, 2013

• The Los Angeles Angels agreed to terms with RHP Josh Judy on a minor league contract.

May 3, 2013

• The Cleveland Indians claimed OF Ezequiel Carrera off waivers from Philadelphia.

May 2, 2013

• The Colorado Rockies agreed to terms with RHP Roy Oswalt on a minor league contract.

May 1, 2013

• The Arizona Diamondbacks traded INF Mark Teahen to the Cincinnati Reds for a player to be named.
• The New York Yankees acquired 3B Chris Nelson from the Colorado Rockies for a player to be named or cash.