Milwaukee Brewers right-hander Wily Peralta left Tuesday's start against Washington in the sixth inning with a left hamstring strain.
Peralta, who hadn't allowed a run through five innings, left after getting Nationals left fielder Bryce Harper to bunt into an out to start the bottom of the sixth inning.
"It tightened up on him," Brewers manager Ron Roenicke said. "It wasn't like he felt something pull. Whether it is lack of fluid or whatever, hopefully it's just tightness.
"I looked over at (Aramis Ramirez) and Rami said it looked like he was landing different. Maldy said the same thing."
Peralta is the third pitcher on Milwaukee's staff to leave a game with an injured hamstring. Closer Jim Henderson and starter Marco Estrada both needed trips to the disabled list after suffering their hamstring injuries. Both Henderson and Estrada pulled their hamstring, but the Brewers won't know the extent of Peralta's injury until Wednesday.
"I'm hoping this isn't a pull. It doesn't sound ...