NEW YORK (AP) — Struggling closer Edwin Díaz was placed on the 15-day injured list Wednesday by the New York Mets with a right shoulder impingement.

The team made the announcement about 15 minutes before its series finale against the Los Angeles Dodgers.

In another discouraging development moments later, slugger Pete Alonso exited in the first inning after getting hit on the right hand by a 93 mph fastball from James Paxton. The Mets said Alonso would undergo imaging.

Brett Baty ran for Alonso and remained in the game at third base. Mark Vientos moved from third base to Alonso’s position at first.

After missing last season because of a knee injury, Díaz is 1-1 with a 5.40 ERA and five saves in 20 appearances. He has blown three straight save chances and four of his past five. And that doesn’t include a meltdown in Miami on May 18, when the right-hander squandered a four-run lead in the ninth inning but wasn’t charged with a blown save.