In a significant blow to the first-place New York Yankees, closer Luke Weaver is expected to miss four to six weeks with a hamstring injury, sources told ESPN's Jeff Passan on Monday.
Weaver suffered the injury over the weekend during the Yankees' three-game series against the Los Angeles Dodgers. The right-hander logged an inning in Saturday's 18-2 blowout loss, giving up a home run and throwing 14 pitches. He began warming up to pitch the ninth inning in Sunday's series-ending win but stopped because of hamstring discomfort and did not enter the game.