Ames, Iowa ? The fans didn’t storm the court after unranked Iowa State’s 68-61 men’s basketball victory over No. 15-rated Kansas University Saturday at Hilton Coliseum.

KU coach Bill Self can understand why.

“This was not a big upset today,” Self said after KU’s first league loss against five victories. ISU improved to 4-2 in conference play. “This was a coin-flip game if we play well. We didn’t. They deserved to beat us.”

Self and the Jayhawk players were unhappy at a defense that allowed 47 second-half points.

“They were getting the ball in the middle, causing havoc with our defense, our guys having to leave their man,” KU junior forward Wayne Simien said. “Sullivan started knocking down threes the second half, and it was all she wrote.”

Jake Sullivan cashed three three-pointers the final half.

KU junior Keith Langford scored 20 points, but Simien had just 11 off 4-of-11 shooting, and J.R. Giddens had nine points.

“We just can’t depend on our three main players,” Jeff Graves said. “We need other guys on the team to step up, too. We didn’t today.”

Graves had five points and seven boards as ISU outboarded KU, 45-39.

“We just didn’t get stops the second half,” Simien said. “They just exploited us in the middle. That is what happened.”

Next up is Missouri, which will invade Allen Fieldhouse for an 8 p.m. tipoff Monday.

“I think it’s good for us to have another game right after that. It’s good to get back out there right away and play a rivalry game,” Simien said. “It’s going to be a long bus ride home, though.”

Let it snow: The threat of a winter storm may keep some fans from attending Monday’s Kansas-Missouri men’s basketball game.

KU humbled at Hilton Cyclones: ‘This is anybody’s league now’ ‘Not a big upset’ Get the stats: KU-ISU box score WIBW: Weak second half leads to KU loss Hear Bill: KU-ISU postgame comments See the photos: KU-ISU

But even up to a foot of snow wouldn’t cancel the ESPN Big Monday contest between the rival schools.

“I think once you are sure the officials are there and the teams are there, you play the game,” said Larry Keating, KU senior associate athletic director.

The Tigers are expected to arrive in Lawrence this afternoon, with two of the three game officials set to travel to Kansas City with Big 12 Conference assistant commissioner John Underwood right after today’s 1 p.m. battle between Nebraska and Oklahoma in Lincoln, Neb.

“That’s why teams typically come in the day before,” Keating said.

Keating isn’t sure where the third official will be coming from, but assumes that official is working a game today.

The former Seton Hall athletic director remembers just one game called because of snow.

“We were playing Miami (in New Jersey), and the governor closed the state,” Keating said. “He wouldn’t let traffic in under the highways. We could have played, but the state was officially closed.”

Kansas' Michael Lee (25) goes in for a fast-break layup against Iowa State's Jared Homan in the second half.

• Lew on KU-MU: Kansas athletic director Lew Perkins is confident fans will be on their best behavior Monday night when Missouri comes to town.

He sees no need to make a special request for classy behavior in the Allen Fieldhouse stands.

There haven’t been any fan-control problems in games at Allen in many years, except two of the past three seasons when KU fans have screamed insults at CU’s David Harrison.

Two years ago, fans stood by the CU locker room and hurled insults at Harrison. Jan. 25, some fans in the south student section exchanged words with Harrison as he headed to the visitor’s locker room after fouling out with 10 minutes to play.

“I have a great deal of respect for our fans. If I had to say something special, they wouldn’t think I trust them,” Perkins said.

“I hope they respect the game, respect our team and respect Missouri. Those kids are nice, young men. I just hope people have fun, yell, cheer, keep it in perspective.”

Perkins stood in the south end zone for the last 10 minutes of the KU-CU game.

Kansas' Jeff Graves has his shot swatted by a Cyclone.

“One of my staff was already in place,” Perkins said. “I just went over there. More importantly I felt the people at Colorado, the coaches, did a great job out there. It was emotional. Unfortunately, those things sometimes happen.

“I think that’s a role I have,” Perkins added, of being around at games. “I’m not going to get in the middle of that big fella (Harrison). I’m too old for those. I think having a presence is important. That’s why I sit on the floor, to have a presence. As you know, it’s not the best seat in the house. I get blocked out a lot.

“One of the things I try to do before the games is go to the locker room to meet the coach to say here’s where I’m going to be, here’s my staff, just to know I’m available.”

Perkins says he loves Allen Fieldhouse, which will be rocking Monday night.

He wants the building to be home of KU basketball a long, long time. Next season marks the 50th year the building has been in use.

“It’s a great, great venue. We’d be crazy to give that up. You look at what Duke has done (in renovating old building) and some other places … we just have to do some things cosmetically,” Perkins said.

• Allen in the house: Former KU football coach Terry Allen attended and sat with some football players and recruits in one end zone.

Allen, who has been ISU associate head coach the past two years, admitted it was strange to root against KU.

“It sure is,” he said. “At least coach (Roy) Williams isn’t the basketball coach. Then it really would be hard.”

• Stats, facts: KU had a nine-game win streak in regular-season Big 12 games snapped. … KU had its five-game win streak over ISU halted. … Miles, who had 11 assists, passed Darnell Valentine for fourth on the all-time career assist list.