General manager John Mozeliak says the team became aware of the issue about a week ago and had hoped Garcia could work through it. He was charged with six runs and six hits over 5 1-3 innings in a 7-6 victory over Milwaukee on Friday, improving to 5-2 while his ERA increased from 2.88 to 3.58.
This is Garcia's fourth trip to the disabled list, including a two-month stint during the 2012 season with a left shoulder sprain.
St. Louis didn't announce who would take Garcia's place in the rotation. The NL Central leaders recalled reliever Mitchell Boggs from Triple-A Memphis on Saturday.
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