Things got so out of control that Kansas player Silvio De Sousa picked up a chair and put it over his head to hit another play WWE-Style.Thankfully a coach was able to take the chair away from De Sousa before he hurt someone.
It appeared De Sousa picked up a stool and held it over his head before Kansas assistant Jerrance Howard grabbed it from him from behind.
Kansas coach Bill Self said there will be penalties.
"I have to watch the tape and see the extent of it, but I know we were in the wrong", he said.
The violent brawl immediately triggered calls for lengthy suspensions for several of the players involved.
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"There will be consequences that I'm sure I'll announce tomorrow", Self said.
Kansas started dribbling out the clock while holding a massive lead in the final seconds, Kansas State's DaJuan Gordon stole the ball and started dribbling down the court in an effort to secure one last layup.
That triggered benches to empty and punches to be thrown in what amounted to an all-out brawl.
"It should have been avoided", Kansas State coach Bruce Weber said.
"They came here wanting to have a game, compete, and we didn't compete the way we needed to, and probably a little frustration, especially the young guys", Weber said, according to the AP. Kansas has now won six of its last seven. The two teams will meet again at the end of February.