Dirk Nowitzki had eight points on 3 of 9 shooting a week after making a surprise return in a 38-point loss to the Spurs in San Antonio.
The Spurs led all the way, with Tim Duncan helping the team to a 20-6 start by hitting several jump shots.
He finished with 18 points, 10 rebounds and three blocks.
Darren Collison scored 18 points to lead the Mavericks, whose losing streak is their longest since January of their championship season in 2010-11.
PISTONS 96, BUCKS 94
In Auburn Hills, Mich., Tayshaun Prince made two free throws with 10.9 seconds left to give Detroit a victory over Milwaukee after the Pistons blew a 14-point lead.
Prince scored 20 points, and Greg Monroe added 14 points and 10 rebounds for Detroit, which had five players in double figures. Charlie Villanueva and Brandon Knight added 11 points apiece, and Jason Maxiell scored 10.
Monta Ellis had 30 points and nine assists, and Erson Ilyasova scored 24 for the Bucks.