Austin, Texas ? Texas has refused to call the Chance Mock-Vince Young quarterback combination a “rotation” this season.

Whatever it is, it works.

The duo provided plenty of offense Saturday night in the first half of a 63-18 romp over Tulane. Mock threw three touchdown passes and ran for another, and Young ran and passed for two scores as the No. 14 Longhorns cruised in their final tuneup before Big 12 Conference play.

Texas (3-1) plays its first conference game Saturday against No. 16 Kansas State.

“When you want to win, you got to put points on the board,” said receiver Roy Williams, who caught two touchdown passes as Texas topped 60 points for the second time this season.

“That’s all we’re trying to do.”

Texas simply swamped the Green Wave with a quarterback rotation that Longhorns coach Mack Brown has said — until this week at least — didn’t exist.

Although Young had seen playing time this season, Brown and his staff had refused to call the shuffling QBs a “rotation” and said only that they would play Young when they could. He didn’t get any snaps in Texas’ loss to Arkansas

Mock is the starter and scored Texas’ first touchdown against Tulane on a one-yard run. Texas led 14-0 after the second drive when Williams took a short pass and shook three defenders with one spin move and a stiff arm for a 13-yard TD.

Texas wide receiver ROy Williams, left, slips past Tulane defensive back Bruce Youmans after catching a pass from quarterback Chance Mock for 13 yards and a touchdown during the first quarter. The Longhorns routed the Green Wave, 63-18, Saturday in Austin, Texas.

Then came Young, who rotated in every third series of the first half.

A super-talented red-shirt freshman who can run and pass, Young faked a handoff and ran 60 yards on his second snap, a play that set up a two-yard TD toss to David Thomas, his first scoring pass of the season.

“It’s a change of pace because we have two completely different styles,” said Mock, considered for now to be the better passer. “It’s like throwing a curveball in there.”

“The defense has to change it’s whole game plan,” Young said. “They’ll be trying to defend Chance when I pop in.”

Mock was 10-of-16 for 145 yards and three touchdowns. Young had 137 total yards with a rushing and passing TD. Cedric Benson ran for three scores.

Tulane (3-2) came into the game with one of the nation’s best passing attacks but never got started as Texas piled on the points.

Green Wave quarterback J.P. Losman, the nation’s leading passer in yardage and touchdowns coming in, had 114 yards in the first half but it paled in comparison to the 387 total yards Texas rolled up before halftime.

Losman ran for his life under a heavy Texas pass rush to finish with 186 yards passing with two interceptions and one touchdown.

The two-headed monster of QBs Mock and Young, meanwhile, ran the Longhorns’ offense to near perfection. Tulane coach Chris Scelfo compared it to gambler who won on every roll of the dice.

“They rolled sevens every way they could,” Scelfo said. “They overwhelmed us.”