The Oklahoma freshman threw a 25-yard scoring pass to Drake Stoops in the fourth overtime and the Sooners survived a late rally from No.
It was just the second four-OT game in 25 seasons of the Big 12, joining Kansas State's 53-50 victory over Texas A&M in 2011.
The Longhorns (2-2, 1-2) also left themselves little hope of playing for a Big 12 title, much less being part of the College Football Playoff conversation.
“I was kind of surprised when I came out at first,” said Rattler, who was tied for the Big 12 lead with four interceptions coming in.
POLL IMPLICATIONSConsecutive Big 12 losses, the first for Oklahoma since 1998, sent the Sooners tumbling from No.