Manning's backup is redshirt senior Matthew Caldwell, who entered Saturday's game against Mississippi State and delivered a go-ahead touchdown pass to Emmett Mosley V to secure the win. Behind Caldwell in the room are three freshmen—two true and a redshirt—in Karle Lacey Jr., Trey Owens (RS), and Luke Dunham.

Manning exited Saturday's win over Mississippi State after he hit his head on the ground while diving forward in overtime.

Texas coach Steve Sarkisian said quarterback Arch Manning is in concussion protocol and did not practice Monday ahead of the No. 20 Longhorns’ game against No. 9 Vanderbilt.

Arch Manning suffered concussion late in Texas' win over Mississippi State on Oct. 25. He is in concussion protocol and missed practice Monday.

Texas coach Steve Sarkisian says quarterback Arch Manning has entered concussion protocol following Saturday's win over Mississippi State.

Texas quarterback Arch Manning was in concussion protocol and did not practice Monday ahead of the No. 20 Longhorns' game against No. 9 Vanderbilt. Coach Steve Sarkisian said the team would get an update on Manning's injury later in the week.

Texas quarterback Arch Manning suffered a concussion in the Longhorns ' overtime win against Mississippi State on Oct. 25, according to ESPN.

Arch Manning and Ryan Wingo's relationship didn’t start under the lights at Darrell K Royal Stadium. Before Wingo had even committed, Manning was already reaching out — texting, calling, showing up at his camp.