Garcia will be the opener for Game 5 of the ALCS against the Rays on Thursday, Chandler Rome of the Houston Chronicle reports.
The Astros don't anticipate Garcia making it through the lineup more than once. The 23-year-old jumped all the way from High-A to the majors this season and held his own in 12.1 innings, allowing four runs on seven hits, though his 9:5 K:BB was unimpressive.