Reggie Theus scored eight of his game-high 29 points in a second overtime and Quintin Dailey celebrated his return to action with 18 points as host Chicago beat Atlanta.
Dailey's return was received in dramatic fashion as the 6-foot-4 rookie guard sent the game into each of the overtimes with 20-foot jumpers.
Dailey failed to show for a Dec. 7 home game against the New York Knicks and was given a two-week leave of absence for psychiatric treatment.
"Not only was I relaxed tonight, but I had a feeling I could really contribute," said Dailey. "When I came into the game and hit four out of four shots, my confidence really zoomed."
Early in the season, Dailey was the target of protests when he came to the Bulls after pleading guilty to assault charges for an attack on a student nurse nearly a year ago at the University of San Francisco.
Two straight jumpers by Dailey sent the game into the first overtime.
In the first five-minute overtime, the Hawks went ahead, 109-105, with Eddie Johnson and Dan Roundfield leading the way, but a basket by Mark Olberding and Dailey's jumper with 1:02 left tied it at 109, forcing a second overtime. Theus gave the Bulls a lead they never relinquished off the ensuing jump.