Phillies placed C Carlos Ruiz on the 15-day disabled list, retroactive to May 20, with a right hamstring strain.
Nationals prospect Anthony Rendon started at second base Monday night for Double-A Harrisburg.
According to Andy Martino of the New York Daily News, the Mets have discussed demoting Ike Davis, Ruben Tejada, and Jordany Valdespin.
Gordon Beckham (hand) started at shortstop Monday in his third rehab game with Triple-A Charlotte.
Rangers activated C A.J. Pierzynski from the 15-day disabled list.
Nationals purchased the contract of LHP Fernando Abad from Triple-A Syracuse.
Nationals recalled RHP Yunesky Maya from Triple-A Syracuse.
Nationals optioned OF Eury Perez to Triple-A Syracuse.