Kansas State's Jordy Nelson (27) returns a punt for a touchdown in front of the Texas cheerleaders. The Wildcats hammered the Longhorns, 41-21, Saturday in Austin, Texas.

Austin, Texas ? The Kansas State Wildcats charged toward their purple-clad fans behind the end zone to celebrate, then turned around and left the field flashing downward “Hook’em Horns!” signs.

“Texas who?” shouted Wildcats wide receiver Deon Murphy.

No longer undefeated Texas, that’s who.

Kansas State scored three touchdowns on special teams and an interception Saturday, and the Wildcats stunned the No. 7 Longhorns, 41-21, handing Texas coach Mack Brown his worst home defeat in 10 years.

“We’re not the biggest and strongest team in the country,” Kansas State coach Ron Prince said. “We had to create some havoc.”

The Wildcats (3-1, 1-0 Big 12) defense pounded Longhorns quarterback Colt McCoy into his worst game with a relentless pass rush and four interceptions. Linebacker Ian Campbell returned the first pick 41 yards for a touchdown.

A jarring hit just before halftime left McCoy woozy and sent him to the locker room early. He returned to start the third quarter, but was taken out by team doctors in the final minutes. McCoy was 19 of 39 for 200 yards and a touchdown.

Jordy Nelson scored two touchdowns, including an 89-yard punt return in the third quarter, and James Johnson returned a kickoff 85 yards for another score.

Nelson’s return made it 34-21 and practically ended Texas’ hopes for a comeback. He also had 12 catches for 116 yards.

“Jordy’s the people’s champ,” Murphy said. “It’s in his blood.”

By the time the Wildcats were done, they had scored the most points on Texas (4-1, 0-1) in Austin since 1997 when UCLA handed the Longhorns the infamous “Rout 66” loss, 66-3.

That blowout came under former coach John Mackovic. Until Saturday, Brown’s worst home loss was a 35-17 defeat by Kansas State in 1999. It was also Texas’ first loss in a Big 12 opener since it dropped the ’98 opener to the Wildcats.

This one could be a devastating blow for the Longhorns as they head into next week’s border showdown against Oklahoma, which was upset Saturday by Colorado.

“I think they were looking past us because they have Oklahoma coming up,” Johnson said.

Even if they weren’t, the two teams who were supposed to slug it out in the Big 12 South are both without a win after the first weekend of league play.

“We’re not used to losing like that around here, especially like that,” Brown said. “We’ve got to regroup.”

K-State defenders said they stressed trying to get their hands up to tip McCoy’s passes. On Campbell’s interception, the linebacker stunted on the pass rush, then stuck up his left hand to snag the throw at the line of scrimmage. Almost stunned to get the ball, Campbell coasted into the end zone with a load of Wildcats escorting him.