Yankees' Luke Weaver Gets PRP Injection for Hamstring Injury, Could Miss 4-6 Weeks

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 is projected to miss four to six weeks, via ESPN.

The Yankees previously placed the 31-year-old on the 15-day injured list after suffering a left hamstring strain while warming up to face the Los Angeles Dodgers on Sunday.

Manager Aaron Boone provided an update on Weaver's recovery process.

"He was out already throwing yesterday," Boone said Friday, via ESPN. "He'll be doing his throwing program today. He's pretty encouraged and optimistic considering the injury and the timeline with it, so hopefully he does better than that."

Weaver started his 2025 campaign on a high note prior to the hamstring issue, compiling a 1.05 ERA and 0.701 WHIP through 24 games. He also racked up 24 strikeouts compared to just seven walks in 25.2 innings.

His ability to thrive in multiple bullpen roles has been key for the Yankees, as he transitioned back to their closer following the struggles of Devin Williams to begin the 2025 season.

Weaver also served as New York's closer to end its 2024 season, finishing with a 2.89 ERA in 68 games. He stepped up during the Yankees' World Series appearance last year, recording a 1.76 ERA to go along with four saves in 12 postseason appearances.

The Yankees will look to maintain their status atop the American League East without Weaver, as they currently hold a five-game lead for the No. 1 spot in the division with a 38-23 record.

Until Weaver is able to return, Williams is expected to remain New York's closer.