Ibaka had 10 rebounds and didn't miss a shot until 5:16 remained in the third quarter, finishing 15-of-17 in a masterful performance, The Associated Press reported.
Kyle Lowry added 21 points and 15 assists as the Eastern Conference-leading Raptors improved to 9-1 with their eighth consecutive win over the Lakers since 2014.
Lakers’ LeBron James finished with 18 points and six assists. Kyle Kuzma scored 24 points and Brandon Ingram added 16 for the Lakers, They are 4-6 after their first 10 games with James.
Leonard sat out with soreness in his left foot, depriving Lakers fans of their only look at the superstar before he could become an unrestricted free agent next summer. The Lakers would love to sign a second superstar like Leonard, who grew up in the Inland Empire area one hour east of Los Angeles.
While the Raptors embarrassed Los Angeles without any help from Leonard, the Lakers followed a resilient win in Portland on Saturday night with perhaps their worst half since James' arrival.
Toronto took a 41-10 lead with 2:21 still remaining in the first quarter, and Ibaka outscored the Lakers by himself (20-17) in the opening period. Ibaka went 11-for-11 in the first half, while Lowry had 12 assists as the Raptors hit six three-pointers and forced nine turnovers.
The Lakers also missed their first eight three-point attempts before James made back-to-back triples in the third quarter.