DeGrom was removed from Wednesday's game against the Braves with a hyperextended right elbow, Anthony DiComo of MLB.com reports.
DeGrom exited the game and was seen heading to the locker room with a trainer after tossing four scoreless innings. According to James Wagner of The New York Times, manager Mickey Callaway said deGrom suffered the injury while hitting in the third inning, and that it initially didn't bother him when pitching, which is why the team allowed him to go back out for the fourth. While the severity of the issue remains unclear, the 29-year-old seems likely to miss some time. Tim Britton of The Athletic New York reports that J.J. Putz missed about five weeks with a hyperextended throwing elbow back in 2008. An extended absence for deGrom would be a tough blow to the Mets and fantasy owners alike, as he's been lights out to start the season, compiling a 2.06 ERA and 48:11 K:BB through his first six starts (39.1 innings). He'll undergo further testing in the coming days.