​Ohio State football defensive end Zion Grady exited the Sept. 12 game against Texas on Saturday due to an injury.The defensive end was taken off the field with 9:48 remaining in the second quarter of the game when the Buckeyes led the Longhorns 10-0.Here’s what we know about Grady’s injury:Zion Grady injury: How it happenedGrady was seen laying on the field after a Texas first-down run. He struggled to put weight on his right leg as two trainers assisted him off the field and straight into the medical tent.Report: Grady suffers right knee sprainAccording to WBNS Radio, 97.1 The Fan, Grady suffered a right knee sprain. Who is Zion Grady’s backup? Beau Atkinson could fill in while Grady seeks treatment on the sideline. Again, per 97.1 The Fan, Grady is riding an exercise bike there.This article originally appeared on The Columbus Dispatch: Ohio State football’s Zion Grady exits game with injury. What we know