Boston - Tony Parker scored a season-high 26 points, Tim Duncan had 20 points and 15 rebounds, and the San Antonio Spurs beat the Boston Celtics 112-100 on Wednesday night.

Reserve Tiago Splitter added a season-high 23 points, many coming when the Spurs took charge late in the third and early in the fourth.

Rajon Rondo had 22 points and extended his consecutive streak of double-digit assist games to 35 with 15. Paul Pierce, who sprained his ankle in a 20-point loss at Detroit on Sunday, had 19 points.

DeJuan Blair chipped in with 12 points for the Spurs (9-3), but it was Parker winning the battle of elite point guards against Rondo that carried San Antonio.

Brandon Bass scored 16 and Kevin Garnett 14 for Boston (6-6), which managed just one offensive rebound and lost for the third time in four games.

The Spurs closed the third quarter with a 6-0 run, with Splitter getting a pair of baskets, to take an 82-74 lead.

They opened the fourth by scoring eight of the initial 10 points to open their biggest lead at that point, 90-76 on Splitter's three-point play with just under 10 minutes to play.

Splitter's two free throws increased it to 94-78 with 8:41 to go.

Boston closed the gap to nine, but the Spurs had a pair of easy driving baskets by Parker to maintain a comfortable margin.