Lance McCullers Jr. will start for the Astros in their Sunday night game against the Angels, the first of two outings he will get to prove his health ahead of the playoffs.

McCullers, who after pitching Sunday would then be in line to face the Boston Red Sox next weekend, hasn't pitched since Sept. 6 because of arm fatigue. If healthy, the 23-year-old righthander would provide the Astros a dynamic No. 3 postseason starter behind Justin Verlander and Dallas Keuchel.

"We want to see him pitch a couple times, and he only has time for two spots," Astros manager A.J. Hinch said on Friday. "It's important, very important, especially for him."

Collin McHugh will start for the Astros in Monday night's series opener against the Texas Rangers in Arlington before Keuchel and Verlander pitch Tuesday and Wednesday, respectively, in what will likely be their final regular season starts. Keuchel could get another start in the Oct. 1 regular season finale but only if the game has implications for playoff seeding.