Matt Kawahara of the Houston Chronicle reports that Alvarez will begin a minor-league rehab assignment on Tuesday with Double-A Corpus Christi. He’ll serve as a designated hitter in his first rehab game back, and the club plans to have him down for “a few games” before he can be activated off the injured list.

Houston Astros closer Josh Hader has been diagnosed with a left shoulder capsule sprain and will be shut down from throwing for "approximately three weeks," the team announced on Friday afternoon. On Saturday,

Josh Hader's shoulder injury would keep him out of the regular season but he says he could be ready if Astros make playoffs.