Valdez will start Game 1 of the wild-card series versus the Tigers on Tuesday, Julia Morales of AT&T SportsNet Southwest reports.
How the Astros ultimately set up their full postseason rotation will be interesting, but there wasn't much question as to whom would take the ball in Game 1. After an inconsistent first half, Valdez held a 1.96 ERA, 0.89 WHIP and 87:23 K:BB over 78 frames in 12 second-half starts. He'll be opposed by Tarik Skubal.