The Milwaukee Brewers just can't seem to keep their top players healthy.

Ryan Braun, who was on the 15-day disabled list earlier this month due to a right oblique strain, left the Brewers' 5-4 loss to the Atlanta Braves after two at-bats Thursday because of tightness in his right side.

The right fielder was listed as day-to-day, and he will be evaluated further Friday.

"Oblique again. Oblique soreness," manager Ron Roenicke said when asked about Braun after the game. "There was concern he was going to hurt it."

Braun is hitting .212 (7-for-33) with two doubles and a homer since coming off the DL on May 13. For the season, he is batting .289 with seven homers and 19 RBIs in 31 games.

The Brewers are already without cleanup hitter Aramis Ramirez, sidelined since May 10 because of a strained left hamstring. The third baseman doesn't think that he will be ready to come off the 15-day disabled list when eligible Monday.

"Hopefully, it won't be long after that," he said. "I don't want to put a timetable."

Ramirez has no issues hitting, but he hasn't tested the hamstring running full speed and he hasn't taken ground balls.

Meanwhile, right-hander Yovani Gallardo will test his sprained left ankle Friday. How he fares in a bullpen session will determine if he is able to make his scheduled start Sunday against the Marlins in Miami.

"I went out there and played catch to see how it felt," Gallardo said Thursday. "Obviously, you don't expect (the pain) to completely go away in two days."

Gallardo twisted the ankle during a loss to the Braves on Tuesday.