Paul Pierce and Antoine Walker each scored 24 points, and the Celtics nearly blew a 16-point fourth-quarter lead before pulling out a 110-109 win over the Toronto Raptors on Wednesday night.

The win was the fifth straight for the Celtics and their ninth in 10 games since acquiring Walker from Atlanta on Feb. 24 just before the trade deadline.

``Were not really happy with the way we played in the fourth quarter,'' Pierce said. ``We know we could improve, especially on the defensive end.''