CLEMSON, S.C. (AP) -- Mike Tisdale hit the go-ahead jumper with 41 seconds left then blocked David Potter's driving shot on No. 18 Clemson's next possession as Illinois rallied from 23 points down for a 76-74 victory Wednesday night.
The Illini (5-2) looked finished, down 51-28 early in the second half and with leading scorer Demetri McCamey saddled with three fouls and two points.
But Illinois finally got going with a 35-10 run to move in front in the school's biggest comeback ever.
Demontez Stitt missed a driving shot at the buzzer for Clemson (6-2).
Illinois broke a three-game losing streak in the ACC/Big Ten Challenge.
(Copyright 2009 by The Associated Press. All Rights Reserved.)