Jorge Montanez breaks down the last week in saves and middle relievers on the rise in the latest closer report.

New York Yankees closer Luke Weaver is expected be placed on the injured list after injuring his hamstring warming up Sunday night, sources tell ESPN. Weaver underwent an MRI and could miss four to six weeks, though the official timetable will be determined Tuesday.

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 likely moves Devin Willia