This article was originally published on www.si.com/mlb/astros as Astros Closer Josh Hader Not Expected to Return During Regular Season.

Houston Astros All-Star closer Josh Hader will be shut down from throwing for approximately three weeks after the team announced Friday he has been diagnosed with left shoulder capsule strain.

The Astros told The Athletic's Chandler Rome that Hader had suffered a "left shoulder capsule sprain" that will prevent him from throwing "approximately three weeks."