Doncic, who is leading the league in scoring at 34.0 points per game, has played in 37 of the Mavericks' 40 games this season. They are 23-14 in those 37 games and 0-3 when Doncic has not played.
He is officially listed as out due to left ankle soreness after putting up 34 points, 10 rebounds and 10 assists in Saturday's win over the New Orleans Pelicans.
It has been yet another spectacular campaign for the 23-year-old Slovenian superstar, who has a Rookie of the Year and three All-NBA First Team selections from his first four seasons.
Doncic has taken yet another step forward on both ends, posting career highs in points, field goal percentage (49.9), three-point percentage (35.5), made free throws per game (8.4) and steals (1.6).
The Mavericks entered Sunday's action sitting fourth in the Western Conference, just 3.5 games behind the Denver Nuggets in first place.