Watson also had 10 assists and eight rebounds.

Seattle, trailing 95-89 with 3:14 to go, took charge with a surge that included a three-point play by Nick Collison, a jumper by Johan Petro and a pair of baskets by Kevin Durant.

Durant scored 19 points and Collison 18.

Dirk Nowitzki had 32 points and Jason Terry 25 for the Mavericks, who lost their second straight game.

Dallas has already nailed down the seventh seed in the Western Conference playoffs.