AUSTIN, Texas - Texas Longhorns quarterback Arch Manning is now in concussion protocol after taking a big hit in overtime during Saturday's game against Mississippi State.

The Longhorns ended up winning 45-38 after Manning's backup Matthew Caldwell stepped in and threw the game-winning touchdown pass in his absence.

What we know:

The Associated Press reports that Manning was injured during the first play of overtime.

According to Longhorns head coach Steve Sarkissian, the play when he was hurt was among those submitted by the team to the SEC for review.

Manning had broken off a long run and was already going down to the ground when a defender fell on top of him from behind, says AP's Jim Vertuno.

What they're saying:

Sarkissian and Manning's teammate Parker Livingstone spoke abo

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