BOSTON, May 3 (UPI) -- Oakland Athletics designated hitter Mike Piazza is expected to miss 4-to-6 weeks with strained ligaments in his right shoulder.
The 39-year-old Piazza was hurt in the sixth inning of Wednesday night's game at Boston, when Red Sox third baseman Mike Lowell appeared to roll over his shoulder when trying to make a play on Bobby Crosby's ground ball.
Piazza was placed on the 15-day disabled list.
"It just kind of felt like he kind of flopped on me," Piazza said on Oakland's Web site. "My whole arm went numb. It was just a freak play. It's really frustrating. I felt like I was starting to swing the bat better. It's a tough setback."
With two hits in the contest, Piazza was batting .391 in his last six games.
For the season, Piazza is batting .282 with one home run and eight RBI.