Carpenter allowed one hit in 2 2-3 innings on Tuesday against the Florida Marlins before calling for a trainer. The right-hander, 16-9 with a 3.22 ERA last year, got the first two outs and walked Chris Coghlan before leaving the game.
Carpenter said he threw one more pitch after feeling the hamstring tug. He said he wasn’t that concerned about the injury.
St. Louis pitcher Mitchell Boggs left in the fourth inning with a lower back strain after retiring one hitter. The Cardinals already were without 20-game winner Adam Wainwright, who had reconstructive elbow surgery this week.
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