Al Horford collected 16 points and 15 rebounds and Joe Johnson added 19 points and five boards as the Atlanta Hawks dominated the fourth quarter en route to a 88-83 victory over the visiting Boston Celtics on Friday.

Jamal Crawford chipped in 20 points off the bench and Zaza Pachulia recorded 15 points and 10 rebounds for the Hawks (44-32), who have won four straight to hang onto the No. 5 spot in the Eastern Conference.

Paul Pierce scored 25 points for the Celtics (52-23), who dropped into third place in the East, one-half game behind the Miami Heat (53-23) and three back of the first-place Chicago Bulls (55-20).

Boston held a 66-55 advantage after Ray Allen’s jumper with 2:05 in left in the third but managed only one field goal over the next five minutes. Atlanta bridged the third and fourth quarters with a 16-3 burst to go on top, 71-69, with 9:40 left.

Rajon Rondo made two quick baskets to give the Celtics the lead back, but the Hawks took off on an 11-2 spurt over the next five minutes to go on top for good.