DALLAS -- The Detroit Pistons are moving in the right direction, while the Dallas Mavericks are looking for answers.

Marcus Morris scored 20 points, including two 3-pointers during a decisive fourth-quarter run, and Andre Drummond had 25 points and 17 rebounds to help the Pistons beat the Mavericks 102-96 Wednesday night.

Drummond leads the NBA with 54 double-doubles. Tobias Harris added 19 points for Detroit, which won its 33rd game -- one more than all of last season.