David West scored 24 points Tuesday while Andrew Bynum finished with eight points and 10 rebounds in 16 minutes, helping the Pacers pull away from Boston, 94-83.
The Pacers desperately needed West's closing punch after losing a season high four straight.
Jared Sullinger led Boston with 17 points and nine rebounds, Kris Humphries added 15 points, but it wasn't enough to win a third straight as the Celtics lost more ground in their chase to make the playoffs.