Athletics left-hander Drew Pomeranz undergoes shoulder surgery

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The Athletics announced Thursday that left-hander Drew Pomeranz underwent surgery this week for a clavicle resection.

According to Joe Stiglich of, a clavicle resection is described as a “minimally invasive procedure meant to relieve pain in the AC joint.” The expectation is that Pomeranz will be ready for spring training next year.

Pomeranz began this season in Oakland’s rotation, but he landed on the disabled list in mid-May with a sprained AC joint after posting a 4.40 ERA over eight starts. He pitched almost exclusively in relief upon his return in June and did quite well, finishing with a 2.93 ERA and 50/15 K/BB ratio over his final 43 innings. It’s unclear what his role will be in 2016, but it looks like the former top prospect might have found a home in the bullpen.