Gary Sheffield began a rehabilitation program for his surgically repaired right shoulder this week and remains on course to participate in spring training, his attorney said Wednesday. ?It?s still early in the process, but if anything, there?s reason for optimism,? Rufus Williams said in a telephone interview. ?There have been no complications since the surgery.? Sheffield, the Tigers? 39-year-old designated hitter, underwent arthroscopic surgery on Oct. 8 to repair a torn labrum and remove bone chips from the shoulder. The team has said Sheffield should be able to hit during spring training but has acknowledged that he may not be ready to play in the outfield by then. Sheffield batted .265 with 25 home runs and 75 RBIs in 133 games this year, mostly as a DH.