Altuve was removed from Tuesday's game against the Giants after getting hit on the foot by a pitch, Matt Kawahara of the Houston Chronicle reports.
Trammell is absent from Tuesday's lineup against the Giants.
The Astros optioned Meyers to Triple-A Sugar Land on Tuesday, Julia Morales of Space City Home Network reports.
Klassen is slated to start Wednesday's game against the Rangers at Angel Stadium.
Johnson will start Tuesday's game against the Rangers at Angel Stadium.
Wesneski allowed three runs on five hits and two walks while striking out four over seven innings in a no-decision versus the Giants on Monday.
Smith went 3-for-4 with a solo home run, a second RBI and two total runs scored in Monday's 6-3 extra-inning win over the Giants.
Correa (ankle) has been cleared to hit off a tee, Matt Kawahara of the Houston Chronicle reports.
Burrows (elbow) will make a rehab start for Triple-A Sugar Land on Friday, Brian McTaggart of MLB.com reports.
Rivero (hand) was returned from his rehab assignment Monday after suffering a setback, Rhett Bollinger of MLB.com reports.
