Saturday was supposed to be Isaiah Livers' triumphant return after a six-game absence for Michigan.
Instead, Illinois' Ayo Dosunmu spoiled the party, hitting a winning jump shot with 0.5 seconds remaining to beat the Wolverines 64-62 at Crisler Center and hand them their fourth straight loss.
The 21st-ranked Illini (15-5, 7-2) moved a half-game ahead of Michigan State for first place in the Big Ten.
Livers appeared to re-aggravate his groin injury in the second half after hitting the floor hard while attempting a dunk. He shot two free throws before exiting the game.
Dosunmu scored a game-high 27 points on 11-for-18 shooting.
The Wolverines (11-8, 2-6) missed five consecutive free throws down the stretch.
No. 24 Rutgers 75, Nebraska 72: Geo Baker hit a three-pointer with 1.2 seconds left to send Rutgers (15-5, 6-3 Big Ten) past the Cornhuskers (7-13, 2-7) and raise the Scarlet Knights' home record to 14-0. Rutgers' unquestioned leader waved off his teammates before drilling the final shot on a step-back jumper.
No. 1 Baylor 72, Florida 61: The visiting Bears (17-1) extended their winning steak to 16 games with a victory over the Gators (12-7). Baylor matched the best 18-game start in school history, achieved two other times.