SALT LAKE CITY — Utah needed to go 80 yards in less than three minutes — and had very little reason to feel optimistic.

But after No. 11 TCU’s defense dominated for 45 minutes, Brian Johnson threw a 9-yard touchdown pass to Freddie Brown with 48 seconds left to rally the No. 10 Utes to a 13-10 win over the Horned Frogs on Thursday night.