Lou Williams led the way with 17 points, and Andre Iguodala and Thaddeus Young each had 16 in the Sixers 105-100 win.
The sixth-place Sixers opened the fourth quarter on a 25-6 run to send the fifth-place Hawks to their second demoralizing loss in two nights. The Bulls won in Atlanta 114-81 on Tuesday night.
Williams and Young keyed the Sixers' rally off the bench in the fourth. Philadelphia was down ten late in the third quarter before an 11-0 run early in the fourth fueled the comeback.
Josh Smith had 33 points and 12 rebounds for the slumping Hawks. Smith's 3-pointer with 1.6 seconds left pulled the Hawks within three.
Iguodala hit two free throws to clinch the win, bringing the Sixers to a record of 37-34 and within 2 1/2 games of Atlanta for fifth-place in the Eastern Conference.
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