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 is looking to return in the postseason after suffering a shoulder injury while training on Monday.

The Astros had won three consecutive series before losing two of three to the Orioles, the last-place team in the AL East.

Houston Astros starter Cristian Javier left Sunday's 12-0 loss to the Baltimore Orioles after three innings because of an illness, and he was replaced by Shawn Dubin in the fourth inning after the veteran allowed three hits and a run with two strikeouts.