New York Yankees closer Luke Weaver received a platelet-rich plasma injection designed to speed healing in his injured left hamstring, according to the Associated Press (h/t ESPN).

Weaver was injured Sunday while he stretched in the Yankees bullpen after warming up to pitch the ninth inning of a 7-3 win over the Dodgers. When Weaver reported feeling a grabbing in his hamstring, the Yankees went with left-hander Tim Hill to close over the victory.

Yankees closer Luke Weaver has been placed on the 15-day injured list with a strained left hamstring sustained while warming up at Dodger Stadium last weekend, an injury that moves Devin Williams back into New York’s closer’s role.