Griffin will start Sunday's matchup against the Hawks, Jared Weiss of The Athletic reports.
The Celtics locked up the No. 2 seed and are resting a majority of their regulars, so Griffin draws the start at center and will be joined by Derrick White, Payton Pritchard, Sam Hauser and Mike Muscala. Across his previous 15 starts, Griffin has averaged 8.5 points, 5.5 rebounds and 2.0 assists in 21.4 minutes per game.