INDIANAPOLIS (AP) _ Ron Artest had 17 points and Jeff Foster sank two free throws with 2:32 to play, the last points scored in the Indiana Pacers' 91-90 win over the Boston Celtics in a preseason game Saturday night.

Boston overcame a 21-point deficit in the second half to take the lead for the first time in the game at 88-85 on a 3-pointer by Eric Williams with five minutes to play.

Indiana (2-0), which had led 68-47 with 6:45 remaining in the third quarter, kept its reserves in the game the entire fourth period while Boston (0-3) rallied behind All-Stars Antoine Walker and Paul Pierce.

The Pacers scored the game's first five points and kept the lead until Mike James hit a 3-pointer for the Celtics, tying the game at 85 with 5:55 to play. A lay-up by Williams gave Boston a 90-87 lead with 3:17 remaining.

Omar Cook's short jumper brought Indiana to within a point with 2:58 left. Foster gave Indiana the lead with his free throws. The Celtics missed six consecutive shots the rest of the way, including a 25-foot attempt by Pierce with 2.3 seconds to play.

Jermaine O'Neal and Reggie Miller each scored 14 points for the Pacers.

Walker and Pierce led the Celtics with 15 points apiece.

Indiana opened a 14-point lead by shooting 53 percent in the first quarter, while Boston hit just 30 percent (6-of-20).

The Pacers led 54-45 at halftime while using its bench for most of the second period and built its biggest lead in the third quarter on a 19-foot jumper by Artest. Indiana led 76-68 after three quarters despite shooting just 29 percent (5-of-17) in the period.