MILWAUKEE -- Ben Sheets was working on a shutout when he felt pain in his upper back in the eighth inning.
Sheets came out of the Milwaukee Brewers' 3-1 victory over the Atlanta Braves on Friday night and is day to day with the injury. He is to be re-examined Saturday and didn't know whether he would miss his next scheduled start.
"It was almost like a cramp," Brewers manager Ned Yost said. "I think he is going to be just fine."
Chipper Jones was batting with two outs in the eighth and behind in the count 0-2 when Sheets bounced a pitch behind the batter. Sheets came off the mound in obvious pain, holding his right shoulder as Yost and trainer Roger Caplinger rushed to his aid.
Sheets said he actually felt the pain on the previous pitch, a curveball to Jones.
"It was a disappointment because I was in a real good groove and I felt like I was in control of the game," he said. "We'll have to see how I feel tomorrow."
Sheets (10-9), who was replaced by Kane Davis, struck out eight, allowed five hits and left with a 3-0 lead. Sheets had pitched nine innings in four of his previous five starts.
"He was lights out," Yost said. "Benny was really about as good as Benny can be. He gave us a great game tonight"
Andruw Jones hit an RBI single off Davis before Dana Eveland retired pinch-hitter Julio Franco on an inning-ending groundout. Derrick Turnbow struck out three in the ninth while allowing two hits for his 29th save.
"I don't want to see him go down with an injury," Atlanta manager Bobby Cox said of Sheets. "As good as he was, we still hit some balls hard off of him. But Sheets is that way. He's as tough as they come."
Carlos Lee hit a two-run homer for Milwaukee, which on Turn Back the Clock Night wore retro uniforms of the Milwaukee Braves, who moved to Atlanta in 1966.
Horacio Ramirez (10-8) gave up three runs -- two earned -- and five hits in seven innings for the NL East leader, who lost for the sixth time in 10 games.
"Horacio was outstanding," Cox said. "He threw the ball hard and good."
Ramirez said he made one mistake in the game, the pitch to Lee.
"When your pitching against someone like Sheets, you have to minimize your mistakes," he said. "I made one to Carlos Lee. It cost us the game."
Milwaukee went ahead in the first when Brady Clark led off with a single, stole second base, took third when catcher Johnny Estrada's throw went into center and scored on Lyle Overbay's groundout.
"Any time you can get on the board early for a pitcher like Ben, it is big," Yost said. "To score that first run early, gave Benny a little room to work with."
Overbay tripled leading off the fourth but was thrown out at the plate by Kelly Johnson when he tried to score on Lee's flyout to left.
Overbay started the sixth with a single and Lee homered off the left-field foul pole, his 29th home run of the season.
Prior to the game, the Brewers activated Clark from the 15-day DL and optioned RHP Justin Lehr to Triple-A Nashville. Clark singled in his first at-bat and went 1-for-4. ... The Brewers honored former Milwaukee Braves great Johnny Logan before the game. ... Sheets' walk to Marcus Giles in the sixth inning was the first by the pitcher in 30 innings.