HOUSTON -- Just as the Astros are getting some arms back from the injured list, they must now hope for the best for All-Star closer Josh Hader, who wasn’t available to pitch in Monday’s 7-6 win over the Red Sox because of shoulder discomfort.

Hader threw a season-high 36 pitches in two innings against the Yankees on Friday in New York and warmed up towards the end of Sunday’s win but didn’t get into the game. It was his seventh multi-inning appearance of the season.

“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. “We went ahead and got some testing done, and we’re waiting on the results and should know something more tomorrow.”

https://www.mlb.com/astros/news/josh-hader-undergoing-tests-for-shoulder-discomfort

In his second year of a five-year, $95 million contract, Hader has 28 saves and a 2.05 ERA in 48 games for Houston this year. Among American League relievers, he ranked second in saves and was tied for second in strikeouts entering Monday. He began the year by converting his first 25 save chances, a club record.

Josh Hader has been placed on the 15 day Injured List with a left shoulder strain.