Manager John Farrell made the announcement before Sunday night's game against the New York Yankees. He said the 28-year old Buchholz was expected to be on the field throwing when the team took batting practice, but he was going for a second opinion on Monday regardless of the outcome of his workout.
Buchholz was off to a tremendous start this season, going 9-0 with a 1.71 ERA before the injury.
He suffered the injury after landing awkwardly, making plays on two grounders in a game against the Los Angeles Angels on June 8.
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