Lake Forest couldn't get the ball to junior forward Evan Boudreaux with any consistency Thursday, while Warren point guard Eric Gillespie had the ball in his hands a lot.
Gillespie scored 17 of his game-high 21 points in the second half of Warren's 55-43 North Suburban Lake victory.
"The first half I wasn't squaring up on my shots and they weren't falling, and the second half I tried to square up and take better shots and they started falling," Gillespie said. "I also started picked up the intensity on defense and got a lot of transition points and free throws."
The 5-foot-9 Gillespie bothered the bigger and bulkier Scouts (12-3, 3-2) with his quickness and drives to the lane. His passes to open teammates on the perimeter in the first half helped erase an eight-point first-quarter deficit and ignited a 12-0 run.
In the second half, Gillespie's shooting and defense changed the complexion of the game. He drained three 3-pointers during a seven-possession span and spearheaded Warren's 1-2-2 zone pressure that limited Boudreaux's touches (16 points).
"It was a gutsy performance," Warren coach Ryan Webber said of Gillespie. "He made big shots. ... It was his best defensive game. He got a lot of deflections and bothered a lot of people and he's really been rebounding for us. He's just getting better and better."
The Blue Devils (8-6, 2-3) have lost to several ranked teams, including Curie, Stevenson and Zion-Benton, but in their first game of the calendar year, Warren turned the tables by ending Lake Forest's nine-game winning streak by playing solid defense.
The 6-foot-7 Boudreaux was so frustrated with Warren's ball-hawking zone defense that he resorted to attempting 3-point shots to escape triple-teams in the post. The No. 20 Scouts scored just 20 points in the first half and shot 5-for-15 in the fourth quarter.
"It was a big win, the biggest win yet," Gillespie said.
Player of the game: Eric Gillespie, 21 points, 3 3-pointers, 7 assists, 3 steals.
Key performers: Warren — Adrian Deere, 13 points, 5 rebounds; James Betori, 9 points. Lake Forest — Evan Boudreaux, 16 points, 8 rebounds.