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.

It goes without saying, but losing Weaver to the IL is a significant blow to the back of the Yankees’ bullpen. The closer — who was moved back to the ninth inning after Devin Williams’ shaky start to the year — has a 1.05 ERA with eight saves over 25 2/3 innings this season.