Mavericks tune up for the playoffs by beating Spurs

Tayshaun Prince led the Pistons with 15 points, but the next five players in Detroit's usual rotation combined for only 24 points.

Lakers 109, SuperSonics 98

At Los Angeles, Kobe Bryant scored 50 points and Los Angeles beat Seattle to clinch a playoff berth.

The Lakers will finish seventh or eighth in the Western Conference and face either Dallas or Phoenix in the first round.

Bryant scored 50 or more for the 10th time this season.