Arch Manning immediately shows off the thing that will separate him from Peyton and Eli

With Quinn Ewers down on the Royal-Memorial Stadium turf, Texas fans held their breath. Never fear, Arch is here.

Backup quarterback Arch Manning came onto the field and needed just one play to give Texas a 21-0 lead against UTSA. His 19-yard touchdown pass to DeAndre Moore was just as stunning as was Ewers going down on the turf just one play prior.

But that wasn't the end. UTSA got a quick-strike touchdown with a 53-yard run from Robert Henry.

Just when the Longhorns were trying to figure out what just happened, here came Manning. He faked a handoff and simply took off. Showing incredible speed, Manning beat all the Roadrunners down the field and raced in for a 67-yard score.

Not long after Texas had a 28-0 lead, Ewers was seen walking to the locker room. But Manning scored twice in three plays, an amazing feat whether he's the backup or not.

Related: Texas QB Quinn Ewers hurt against UTSA, Arch Manning throws touchdown