Playing its fifth straight game without defending NBA MVP Derrick Rose, the Bulls managed their third consecutive victory by turning up the defensive heat in the final period.
Chicago trailed by seven points heading into the final 12 minutes and then outscored Toronto 32-13 during the last quarter. Deng finished with 17 points and 10 rebounds while C.J. Watson added 15 and John Lucas III had 13.
DeMar DeRozan led Toronto with 23 points, but the Raptors remained stuck on 15 victories -- third fewest in the NBA. It was Toronto's third straight loss.
Rose is listed as day-to-day with a groin strain.