Drennon Jones scored 23 points, and Zack Hardy and Troy Hubbard added 19 each to help streaky No. 16 Eisenhower pull off an 82-75 SICA East upset at Thornton.
The loss knocked Thornton (17-5, 6-2) out of a tie with Thornridge for the league lead.
Eisenhower (18-4, 6-2) led by two going into the second quarter, then went on a 12-0 run.
In the middle of the third, Eisenhower went on an 10-0 run to turn a six- point lead into a 58-42 bulge. Thornton cut it to 66-60 in the fourth quarter, but another 10-0 spurt iced it.
Tracey Webster scored 25 points and Brian Kelley 23 for Thornton.
7. DE LA SALLE
St. Francis de Sales outscored De La Salle 17-5 in the first quarter and went on to post a 45-40 Catholic League victory.
Jason Moore (8 points), Timel Moore (8 points, 5 assists) and Sean McNabb (10 points) scored four points each in the decisive quarter for de Sales
(12-10, 5-5).
De La Salle (15-5, 8-2) shot less than 40 percent for the game.
Aminu Timberlake led De La Salle with 10 points.