Jose Calderon contributed 13 points and five assists for the Mavericks, who never trailed in the second half and built a lead of as many as 16 points in the fourth quarter.
The Bobcats' three-game winning streak was snapped despite 14 points and 10 rebounds off the bench from rookie Cody Zeller.
Bobcats guard Ben Gordon sat out as he recovered from a procedure to relieve soreness in his right knee. Gordon will miss the remainder of the preseason.
Dallas forward Dirk Nowitzki did not play, getting a night of rest despite occasional "We want Dirk!" chants from some of the 7,678 fans at the Greensboro Coliseum.
No one thought the Portland Trail Blazers would make it to the playoffs, much less the conference semifinals. And that's perfectly fine for the upstart attitudes of Damian Lillard and Co.
Without Chris Paul and Blake Griffin, the Clippers fought valiantly but fell to the Trail Blazers, bringing another season to a disappointing end.
NBA Tonight checks out some strange 'bruh' moments on and off the court on Friday night, including Miami's Josh Richardson taking a bite out of the basketball, comedian Mike Epps tripping and falling and the infamous man in the purple shirt.