The New York Yankees could be without their top reliever for more than a month. Righty Luke Weaver strained his hamstring while warming up for the ninth inning of Sunday's win over the Los Angeles Dodgers (NY 7,

Aaron Boone didn’t sound overly optimistic late Sunday while discussing Luke Weaver, who had to cut his warmup short in the bullpen before the ninth inning of that night’s game at Dodger Stadium because he “felt something” in his left hamstring. Boone’s fears were soon confirmed.

NEW YORK — Yankees closer Luke Weaver described the source of his hamstring injury as a little bit of a jump, a grab that came out of nowhere as he stretched in the bullpen during Sunday night’s win over the Dodgers.