Storen allowed a two-run home run to Yoenis Cespedes in the eighth inning of Wednesday’s 5–3 loss to the Mets that put New York ahead 4–2. After the outing, he slammed his locker shut out of frustration and sustained the injury.
Nationals manager Matt Williams told reporters Storen attempted to throw on Friday and couldn’t. He then informed the team of what happened, and flew back to Washington, D.C. from Miami to see the team doctor.
Washington entered play Saturday down 8 1/2 games to New York in the NL East. They face the Marlins on Saturday at 7:10 p.m.
He owns a 3.44 ERA on the season and has saved 29 games.
- Kenny Ducey