Kawhi Leonard scored 27 points, Pascal Siakam had 20 points and 12 rebounds and the Raptors beat Chicago 95-89 on Sunday night, their seventh straight victory over the Bulls.
Danny Green and Fred VanVleet each scored 10 points as Toronto bounced back from its largest defeat of the season, a 29-point loss at Orlando on Friday.
After setting season-lows in made baskets (28) and field goal percentage (.295) at Orlando, the Raptors got off to a rough start against the Bulls. They scored 14 points in the first quarter, matching their fewest in any frame this season.
Leonard scored 12 points in the decisive fourth, going 8 for 8 at the free throw line.
Lauri Markkanen had 18 points and 10 rebounds and Wendell Carter Jr. had 16 points and 11 rebounds for the Bulls, who didn't score for the first 3:19 of the fourth.
Chicago's Zach LaVine fouled out with 13 points. It was a poor shooting night for LaVine, who went 3 for 17, including 0 for 3 from 3-point range.
Kris Dunn scored 14 points, and Justin Holiday and Chandler Hutchison each had 11 as the Bulls fell to 5-8 under Boylen.
Raptors guard Kyle Lowry (sore lower back) sat for the seventh time in eight games. Toronto is 5-3 without the four-time All-Star.
Ahead 68-65 to start the fourth, the Raptors got back-to-back 3-pointers from Delon Wright and Siakam and held a 74-65 lead at 10:10.
Carter ended Chicago's drought with a hook shot at 8:41. The Bulls missed 12 of their first 15 shots in the final quarter.
Markkanen's 3 at 1:21 brought Chicago within 85-82, but Leonard answered with a pair of free throws. After a missed shot by Dunn, Siakam was fouled and made a pair, giving Toronto an 89-82 advantage with 25 seconds to go.
Toronto outscored the Bulls 13-2 in fast-break points and scored 21 points off 18 Chicago turnovers, a combination Boylen called ''gut-wrenching.''