Baron Davis scored 21 points to lead the Warriors. Al Harrington added 13 points and Andris Biedrins 12.
Mavericks 122, SuperSonics 102
At Dallas, Austin Croshere had a career-high 34 points and seven rebounds as Dallas stretched its winning streak at home to 14 games.
The Mavericks are two wins shy of the franchise record for consecutive home wins, set last season.
Jason Terry's 19 points, Greg Buckner's season-best 17 and Devin Harris' 16 helped the Mavericks set a season high for points and beat the Sonics for the ninth straight time.
Ray Allen had 35 points, 19 in the first half, for Seattle, which tied a single-season club record with its 13th consecutive road defeat. Nick Collison and Earl Watson both had 15 points for the Sonics.
Dallas was without Josh Howard, who missed the game for the birth of his first child.
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