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Story summary
- Colorado Rockies announced RJ Petit has a sprained UCL in his right elbow, sidelining him indefinitely.
- The team is awaiting medical evaluations to determine treatment steps.
- Petit, 26, was selected first in last year's Rule 5 draft and posted a 2.44 ERA in the minors.
- If surgery is required, he would miss the entire season, compounding the Rockies' bullpen depth concerns after Pierson Ohl's Tommy John surgery.
