CLEVELAND -- A's pitcher Dallas Braden underwent surgery last week to repair a torn rotator cuff in his left shoulder, another setback for a player who was already sidelined for this season because of shoulder problems.
The procedure was done by Dr. David Altchek, who also performed Braden's surgery to repair a torn capsule in the shoulder in May 2011 that has sidelined him to this point.
A's head athletic trainer Nick Paparesta said he didn't have all the information he needed on this latest procedure to know whether it's possible Braden could pitch at all next season.
Paparesta said Braden's rotator cuff checked out fine when the capsule surgery was performed, so the assumption is Braden tore his rotator cuff while trying to come back from the first surgery.
It's a very tough break for Braden, who now faces another long-term rehabilitation. The comeback from rotator cuff surgery is often tougher for a pitcher than "Tommy John" elbow surgery, and rotator cuff tears sometimes are career-threatening.
Braden is 26-36 over five seasons with the A's and made national headlines by throwing the 19th perfect game in major league history on Mother's Day, 2010.
In other A's news, manager Bob Melvin said left-hander Travis Blackley would start Wednesday against Cleveland in Bartolo Colon's slot unless Blackley is needed for emergency relief before then.
Infielder Eric Sogard, on the D.L. while recovering from a back injury, suffered a high ankle sprain while turning a double play during batting practice with Triple-A Sacramento. He was close to returning from the back injury, but just got off crutches for the ankle sprain and will be sidelined for an unknown period of time.
Sogard would have been an option to play second base for the A's when he came off the D.L.