Updating a previous item, Scott Baker underwent Tommy John surgery Tuesday instead of just having a cleanup of the scar tissue in his flexor pronator as originally reported. It's a significant difference, as Baker would likely have entered spring training healthy if he only had the flexor pronator cleaned out. Now, he'll almost surely be sidelined into the 2013 season. An MRI hadn't showed any damage to Baker's ulnar collateral ligament, but Dr. David Altcheck discovered damage while the righty was opened up and went ahead with the procedure.