Brewers second baseman Scooter Gennett left the game against the Cincinnati Reds Tuesday with tightness in his right quad.
Gennett also left Saturday's game in Washington with the same tightness. There was no immediate word as to the severity of the injury.
Against the Reds, he made a play on a grounder that was deflected by starting pitcher Jimmy Nelson to end the fourth inning. His turn in the batting order didn't come up in the bottom half of the inning and he was replaced by Rickie Weeks at top of the fifth.
Gennett was 0 for 2 in the game. He is batting .305 with eight home runs and 34 RBI in 89 games.
Meanwhile, the Reds also lost an infielder to injury Tuesday night. Zack Cozart left the game after being hit in the right hand by a pitch while attempting to bunt.
X-rays on the first two fingers of his hand were negative, and the team said he was day-to-day.
Cozart was hit by a pitch from Milwaukee starter Jimmy Nelson in the seventh inning, twisting out of the batter's box in pain while grabbing his hand. The ball appeared to hit Cozart's bat first, but Milwaukee's appeal of the hit by pitch call was unsuccessful and he was awarded first base.
Cozart stayed in the game as a runner and was doubled off second base on an easy flyout to end the inning. He then left the game.
In 95 games, Cozart is batting .227 with two home runs and 22 RBI.