A's RHP Jarrod Parker (elbow fracture) to have surgery

Oakland Athletics righthander Jarrod Parker will have surgery to repair an elbow fracture sustained Friday during a minor-league rehab start. Parker was working his way back from his second Tommy John surgery.

Oakland Athletics righthander Jarrod Parker will have surgery to repair an elbow fracture sustained Friday during a minor-league rehab start. Parker was working his way back from his second Tommy John surgery.

Parker, 26, was making his fourth rehab start for Triple A Nashville when in the sixth inning, he collapsed to the ground in obvious pain while throwing his 87th pitch of the game. Trainers rushed out to him on the mound after his throw sailed wide to the right of home plate.

Parker could also be facing a third Tommy John surgery if the graft from his second operation is not intact. The bone he fractured, the medial epicondyle, anchors one end of the graft.

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Parker's first Tommy John surgery took place in October 2009 while he was with the Arizona Diamondbacks' Double-A affiliate. His second surgery came in March 2014.

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Parker debuted in 2011 with the Diamondbacks before he was traded to A's in December 2011. Over 2012 and 2013, he started 61 games and went 25–16 with a 3.73 ERA and 2.17 strikeout-to-walk ratio in 378 1/3 innings.

Parker tweeted on Saturday expressing thanks for support he had received since the injury.

#11 can do this! Thanks for all the 💪🏼 and support... I'll continue to need!

— Jarrod B. Parker (@JarrodBParker) May 9, 2015

- Mike Fiammetta