A skirmish between Robin Lopez and Serge Ibaka turned out to be just what the Toronto Raptors needed.

They were down 16 points at the time of the altercation (3:59 left in the third quarter) but rallied to win in overtime.

What happened?

DeMar DeRozan got some efficient secondary assistance. DeRozan scored 17 points in the last 21 minutes, but was 7-of-19 from the field. His teammates combined to make 12-of-19 shots. Cory Joseph, P.J. Tucker, Patrick Patterson and Fred VanVleet were a combined 10-of-13.

That's not to say that DeRozan (who scored 42 points) didn't make some big shots. He made two in the final minute of regulation to overcome a four-point deficit. He then scored back-to-back baskets in overtime, the first tying the score and the second putting the Raptors ahead. DeRozan has five 40-point games this season. He had two in his first seven seasons.

Meanwhile, the Bulls couldn't shoot effectively. They shot 58 percent before the fight but were 12-of-38 (32 percent) after it. The Raptors made 13 shots in the restricted area after the ejection, one more than the Bulls had total makes from anywhere. The Bulls' starting backcourt of Jimmy Butler and Rajon Rondo started 14-of-19 but went 6-of-18 after the altercation.

Also important was that the Raptors dominated the glass, outrebounding the Bulls 27-15 the rest of the way. The Bulls had eight offensive rebounds at the time of the double technical but only had one the rest of the way. Tucker had two rebounds in his first 15 minutes, but followed with 10 in his next 18 minutes.

The difference was particularly significant in overtime, as the Raptors outrebounded the Bulls, 9-2.

It was the Raptors' fifth comeback win this season in which they trailed by at least 15 points. That's tied for second most in the NBA.