All hell broke loose at the end of the Kansas vs. Kansas State game on Tuesday ... with the players getting in a bench-clearing brawl.
It all got started in the closing seconds of the Jayhawks' 81-60 win ... when K. State's DaJuan Gordon stripped the ball from Kansas' Silvio De Sousa to try for a last-second bucket.
De Sousa ended up catching up with Gordon, stuffed his layup attempt ... and then proceeded to stand on top of his opponent.
The 2 players started going at it -- and then both teams rushed over to defend their teammates.