DALLAS — It was a rough introduction to the Red River Showdown for Spencer Rattler.
Rattler injured his arm on his second turnover of the day — a play that was ruled a fumble.
On the Sooners' fifth drive of the game, Rattler looked like he was about to be brought down for a sack on third down but the ball popped out and straight into the hands of Texas' Juwan Mitchell.
As he left the field following the play, Rattler was flexing his right hand. It appeared he injured his bicep on the play.
DEFENSE COMING UP BIG AGAIN!