Houston closer Josh Hader underwent testing on a sore shoulder that kept him out of the Astros’ 7-6 win over the visiting Boston Red Sox on Monday.

The ailment arose three days after Hader threw a season-high 36 pitches while getting a win as the Astros defeated the host Yankees 5-3 in 10 innings. Hader didn’t pitch on Saturday as New York defeated Houston, then threw in a bullpen on Sunday for a possible appearance but wasn’t used as the Astros pulled away late in a 7-1 victory.

“He walked in today and he was doing his (plyometrics) before doing his throwing program and just did not feel right,” Astros manager Joe Espada said on Monday. “We went ahead and got some testing done, and we’re waiting on the results and should know something more tomorrow.”

Hader, 31, is two years into a fiv

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