On some nights, even an ultra-intense coach like Kansas University’s Roy Williams can sit back, relax and enjoy a stress-free college basketball game.

On Thursday, for instance, Williams was able to clear the bench early and sit back and clap the last five minutes of KU’s 102-50 annihilation of North Carolina Asheville at Allen Fieldhouse.

“I told ’em it was pleasant to sit there and watch tonight. I wasn’t over there about to have an aneurysm because they were screwing it up so badly,” Williams said of the walk-ons, who sometimes are a bit sloppy at the tail end of blowouts. “It makes it fun for everybody when they try to execute and do things we work on at practice and not see how many shots you can get up in three minutes.”

Williams applauded the late-game play of former Lawrence High standout Steven Vinson, who rejoiced wildly after hitting a three-pointer, and senior Brett Olson, who dunked after airballing a three.

Williams also lauded the early play of his starters, who blew out Asheville from the start, leading 11-2, 18-6, 25-11 and 46-22 at the break.

KU’s coach was so loose, he joked with sophomore guard Keith Langford at halftime. Langford had three vicious dunks early, and flipped in a pair of unlikely threes.

His first, just 5 1/2 minutes in, kicked high off the rim and dropped in. His second, with 11:37 left in the half, banked in from straight on at the top of the key.

“I told him at halftime, ‘See me after the game and we’ll go buy a lottery ticket,'” Williams said of Langford, who scored 18 points off 8-of-11 shooting, including 14 points the first half. “I don’t think he thought either one was going in after it left his hand.”

Langford appreciated the coach’s joke.

“He asked me what the lotto numbers were going to be tonight. It was funny,” Langford said. “I actually thought the first one was going to go in. It felt really good. The second one was contested. It was strong, but it was on line. All I can say is, it’s going in.”

The Jayhawks scored from inside and out, knocking in eight of 18 threes and outscoring Asheville 58-4 in the paint.

KU senior power forward Nick Collison made nine of 10 shots and scored 20 points, while sophomore forward Wayne Simien scored 19 points off 9-of-12 shooting, which included his usual array of vicious dunks.

Michael Lee came off the bench to tie a career high with 11 points as the Jayhawks cashed 62.3 percent of their shots to the Bulldogs’ 31.3.

Alex Kragel led the Bulldogs (3-7) with 31 points, the most by a KU opponent this season, but Asheville had nobody else near double-figure scoring.

The Bulldogs’ leading scorer on the season, Andre Smith, had zero points off 0-of-9 shooting, 19 points below his average.

“Kirk (Hinrich) was sensational defensively. He started on Smith,” Williams said. “He and Aaron did a good job on him, not as good a job on Kragel to say the least. That youngster shot the ball very well.

“We were really good defensively. When we are that good we get turnovers and quick shots.”

Williams credits three straight two-a-day practices, which have been competitive with former Jayhawks Steve Woodberry, Nick Bradford and Danny Manning helping out in scrimmage situations for the Red team against the Blue starters.

“We’ve gotten after it pretty good,” the coach said.

“They’ve been pretty fun, actually,” Collison said of the practices. “They are not normal two-a-days, not too tiring. Those guys (ex-Jayhawks) have really raised the intensity of the practices. They are more experienced players and every single thing they do are more competitive. They are veterans, whereas some of our young guys and new guys may still be learning the system.”

KU’s system normally includes lots of passing, and Hinrich and Aaron Miles led the way with nine assists apiece as KU had 32 assists against just seven turnovers.

Many of the passes resulted in slams, perhaps the most impressive by Langford.

He was asked if he has ever hurt his hand on the rim after such a vicious dunk.

“Yeah, in high school sometimes I’d go in and lay it up and the crowd would boo ’cause my hand hurt,” he said. “It may hurt more later, after the game, definitely after the dunk. When it goes in it feels good.”

The Jayhawks (8-3) will meet UMKC at 2 p.m. Saturday at Kemper Arena in Kansas City.