Valdez will start Friday's game against Oakland, Brian McTaggart of MLB.com reports.
It was originally expected that Brandon Bielak would draw the start, but Houston is now likely focused on setting up its rotation for the postseason. Valdez will head into his final start of the regular season with a 2.98 ERA and 1.26 WHIP while also tallying 118 strikeouts across 129.2 frames. Jake Odorizzi and Jose Urquidy are lined up to start Saturday and Sunday, respectively.