Oklahoma quarterback Spencer Rattler was benched in the second quarter of the Red River Showdown on Saturday after Texas broke out to an early lead.
With eight minutes left in the first half and No. 21 Texas leading 35-20, five-star recruit Caleb Williams entered the game for Rattler after the sophomore fumbled for his second turnover of the afternoon for the No. 6 Sooners.
Three plays later, Texas scored its fifth touchdown of the half. The Longhorns' 38 first-half points are the most they have ever scored in a half against Oklahoma.
Rattler left the game having completed eight of 15 passes for 111 yards with an interception along with minus-9 rushing yards and a rushing touchdown.