Detroit Tigers reliever Wily Peralta appeared to stumble on the mound at the end of his delivery Tuesday.
He grimaced after throwing in the eighth inning during the 11-4 win over Cleveland. Peralta reacted the same after his next pitch.
Athletic trainer Doug Teter walked to the mound and removed Peralta from the game, and Wednesday morning, the veteran right-hander landed on the 15-day injured list with a left hamstring strain.
"I don't see how he avoids the injured list," manager A.J. Hinch said Tuesday night. "He waved us off, walked around and thought everything was fine.