Photo by Chris Lockard

Oakland A's prospect Daulton Jefferies to have Tommy John surgery

Oakland A's prospect Daulton Jefferies will have Tommy John surgery.

The Oakland A's will be without their second-overall pick from last year's draft for at least 12 months. Daulton Jefferies, the 37th overall pick last season, learned on Thursday that he will need Tommy John surgery on his right elbow.

According to A's Director of Player Development Keith Lieppman, no date has been set as yet for the surgery. Jefferies made two appearance for the Stockton Ports this season before landing on the DL. Jefferies threw four scoreless innings in his Stockton debut, but he allowed six runs (two earned) on five hits and a walk in three innings in his next outing. Jefferies had a throwing error in that game, as well. 

Jefferies was limited to 50 innings at Cal last season thanks to calf and shoulder injuries. He threw 11.1 innings in rookie ball after signing with the A's but was kept off of the mound during the fall Instructional League. Jefferies pitched without restrictions this spring, however. 

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