Quantrill will be the Rangers' starter Saturday against the Tigers, Kennedi Landry of MLB.com reports.
Quantrill was initially slated to start Sunday against Detroit, but he'll now take the mound Saturday while Kumar Rocker starts in the series finale. Quantrill has a 3.31 ERA, 1.22 WHIP and 25:11 K:BB across 35.1 innings (17 games, two starts) this season.