Nine Memphis players scored in double figures.
The Grizzlies are trying to protect their No. 8 spot in the Western Conference playoff field. They have won two straight following five consecutive losses.
Jonas Valanciunas had 15 points with 15 rebounds for the Grizzlies.
Atlanta suffered its third loss in its last 11 home games. Trae Young led the Hawks with 19 points on 5-of-17 shooting.