No. 1 Kansas jumped out of the gates early, then overcame a second-half shutout by All-America center Hunter Dickinson on Tuesday to secure a thrilling 75-72 victory over 11th-ranked Duke on Tuesday night.

The Jayhawks secured the high-profile victory while limiting Duke’s Cooper Flagg to 13 points and forcing the freshman phenom into four turnovers. Flagg’s supporting cast led several runs to keep the game close before the tone of the game took a dramatic turn midway through the second half.

With Kansas leading 57-55, Dickinson grabbed an offensive rebound in traffic and was beaten by Duke’s Maliq Brown. Both players fell to the ground, their bodies tangled. While he was on the ground, Dickinson kicked Brown in the head with his right foot and a brief scuffle ensued.

The officials assessed Brown a personal foul on the ground and then went to the monitor. After a lengthy review, they gave Dickinson a flagrant 2nd technical foul, a penalty that resulted in an ejection. Dickinson’s evening was over and he had to leave the Kansas bench.

Dickinson remained on the bench before officials realized he was still there at the next break. Eventually he was led off the pitch with an escort.

The game was a back-and-forth battle the rest of the way before Duke was able to get a go-ahead shot in the final seconds of the game. Kansas defenders suffocated Kon Knueppel’s runner with 3.3 seconds left, and Kansas defender Rylan Griffen grabbed the rebound.

At the other end, Griffen hit two free throws to extend the lead to three, and Duke failed to respond on its final possession with 3.3 seconds left. Knueppel took one last look at a 3-pointer, but it rolled out of bounds as the final buzzer went off.