Luka Doncic had a rare off-game when the Mavericks last played the Nuggets. That was back in October at Denver. Yet the Mavericks still won, 109-106.
Doncic has been putting up monster numbers. The Mavericks' firepower is bolstered with Tim Hardaway Jr. back from a hamstring injury. It's a plus if Kristpas Porzingis can play after missing the past four games with a knee injury. I still like the Mavericks regardless of Porzingis' status. 
The Nuggets aren't nearly as good on the road where they are 2-6-2 ATS when meeting a foe with a winning home mark. It's Denver's fifth consecutive away matchup and concludes its nine-day road trip. So there is a fatigue factor against them, too.
Dallas is 11-5-1 ATS the last 17 times when favored. The Mavericks also are 6-2-1 ATS the past nine times hosting the Nuggets.