The Rangers placed Quantrill (lat) on the 60-day injured list Tuesday.
Quantrill will not pitch again this season after being transferred to the 60-day IL on Tuesday. The right-hander posted a 2.86 ERA, 1.04 WHIP and 81:25 K:BB across 110 innings this season. Texas activated Michael Helman (hand) from the 60-day IL, replacing Quantrill on both the active and 40-man rosters.