While his teammates held Gonzaga (No. 18 ESPN/USA Today, No. 19 AP) at arm's length Saturday, Meyers Leonard spent much of the first half on the bench. The 7-foot-1 center was Illinois' best match for Gonzaga's 7-foot Robert Sacre. But with two fouls, Leonard sat for the half's final 8:39. Leonard didn't miss a beat when he returned for the final 20 minutes, leading a rotating cast of Illini big men that shut down Sacre and scoring 17 of his game-high 21 points in an 82-75 upset over Gonzaga (5-1). Illinois (8-0) remains unbeaten.