Astros righty Jandel Gustave underwent Tommy John surgery today, writes Jake Kaplan of the Houston Chronicle. The hard-throwing reliever had been on the disabled list since April 19 with what was announced as a flexor strain. It’s not clear when the diagnosis of a torn ulnar collateral ligament was made, but regardless, Gustave will be out for the rest of the 2017 campaign and likely most of the 2018 season as well.
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Gustave, 24, was picked out of the Astros’ organization in the 2014 Rule 5 Draft by the Red Sox and bounced around the waiver circuit during Spring Training 2015 before being returned to Houston in early April.