BYU upset No. 13 Kansas State 38-9 late Saturday night by blowing up the Wildcats in the middle of the game. The Cougars stunned the Big 12 co-favorite with a barrage of huge plays that created a freight train of momentum K-State could not answer.

BYU's defense forced three turnovers, Jake Retzlaff threw for 149 yards and two touchdowns and Parker Kingston had a highlight reel 90-yard punt return touchdown in a 38-9 victory over No. 13 Kansas State on Saturday night.

BYU’s defense forced three turnovers, Jake Retzlaff threw for 149 yards and two touchdowns and Parker Kingston had a highlight reel 90-yard punt return touchdown in a 38-9 victory over No. 13 Kansas State on Saturday night.

BYU has been searching for a defining moment in its young Big 12 football existence for more than a year now, and on a wild and woolly night in Provo, head coach Kalani Sitake’s crew delivered it in some of the most unimaginable ways possible.

In 39 seconds of gameplay, BYU went from trailing no.13 Kansas State 6-3 to taking a 17-6 lead into the halftime locker room. The madness didn't stop there as B

BYU's Parker Kingston initially botches the punt return, but recovers the ball and somehow runs 90 yards to the house for a touchdown vs. Kansas State.

That starts with No. 13 Kansas State coming into Provo for BYU’s Big 12 opener on Saturday night. The Wildcats are favored near the top of the league this year. It begins a gauntlet of games where the Cougars see all four of the Big 12′s college football playoff contenders.

BYU's Tommy Prassas grabs the loose ball and takes it 30 yards for a Cougars touchdown.

BYU scored three touchdowns off Kansas State turnovers in a three-minute span as the Cougars knocked off the No. 13 Wildcats 38-9 on Saturday night in Provo, Utah. Jake Retzlaff

Kansas State football laid an egg against BYU on the road in its Big 12 opener. Here is how the Wildcats graded out.