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Jack Leathersich undergoes Tommy John surgery

NEW YORK -- New York Mets left-handed reliever Jack Leathersich underwent Tommy John surgery in Manhattan on Thursday. Team doctor David Altchek performed the procedure at the Hospital for Special Surgery.

It was unclear until the procedure began whether Leathersich would require the ligament-replacement procedure. Initially, the hope was that the ligament would be structurally passable and a less serious procedure could be performed to address a bone spur and nerve issue.

Leathersich, 25, had a 2.31 ERA in 17 relief appearances at the major league level this season.

Unless the Mets decide to place him on the 60-day DL at some point to free a 40-man roster spot, Leathersich will not accumulate major league service time while rehabbing over the next year. He officially was a minor leaguer for one game with Triple-A Las Vegas before getting shut down. Leathersich threw 57 pitches in that relief appearance with the 51s on June 29.

Leathersich was not the only Mets pitching prospect to recently get diagnosed with the need for Tommy John surgery. Brooklyn left-hander Blake Taylor, who was the player to be named in the Ike Davis trade with the Pirates, also has been diagnosed with a ligament tear.