Andre Iguodala scored 18, and Brand had 10 rebounds to go with his 10-for-12 shooting.
Coming off a 21-point loss to lowly Washington on Friday that knocked them out of first place in the Atlantic Division and down to No. 7 in the Eastern Conference, the Sixers earned a hard-fought win against a team ahead of them in the standings.
Josh Smith led Atlanta with 34 points and Joe Johnson had 15. The Hawks have lost three of four after winning four straight.
The 76ers pulled within a half-game of Boston in the Atlantic. They had been in first place - either alone or tied - since Dec. 28, but fell behind after losing
