Luka Doncic led six Mavericks who scored in double digits with 27 points on 11-of-21 shooting. That offensive effort helped propel the Mavs' 68-point first half.
The Nets nearly kept pace with 64 points of their own by halftime, but Dallas dominated from there, outscoring Brooklyn 47-34 in the final two quarters.
Mavs big man Kristaps Porzingis returned after missing three games with lower back tightnessand added 18 points for a Dallas team that shot 52.3 percent from the field.
The Nets were without Kevin Durant (left hamstring strain) and Kyrie Irving (right shoulder recovery), and the offense struggled without them. James Harden led Brooklyn with 29 points, but no other Net had more than 12. Brooklyn made just 40.7 percent of its field goals.
The 16-16 Mavericks have won seven of their last nine games, and the 22-13 Nets' eight-game winning streak ended in defeat.
Nets G James Harden: 29 points, 7 rebounds, 6 assists
Nets F Jeff Green: 12 points
Nets G/F Joe Harris: 9 points, 7 rebounds
Mavericks G Luka Doncic: 27 points, 7 assists, 6 rebounds
Mavericks F/C Kristaps Porzingis: 18 points, 4 rebounds, 3 blocks
Mavericks F Dorian Finney-Smith: 12 points, 8 rebounds, 4 assists, 2 steals
Luka, KP Put on a Show in Brooklyn
The Mavericks have had their fair share of struggles this year en route to a .500 record, but Saturday they looked more like the team that made last year's postseason and gave the Los Angeles Clippers a tough challenge in Round 1.
Doncic and Porzingis were two big reasons for that, helping the Dallas offense dominate for nearly the entire game.
Porzingis, who had been out for three games with a back ailment, looked just fine after this dunk.
Doncic soon went to work, nailing this step-back jumper.
He also drew in the defense and kicked it out to Tim Hardaway Jr. for three:
Sometimes, Doncic took care of business himself, showcasing his phenomenal handles en route to another bucket.
Dallas' ball movement was crisp all night, and Porzingis ended one excellent sequence with a baseline jumper.
Doncic was once guarded by 6'11" Nic Claxton, but it didn't matter as he got the hoop plus the harm anyway.
Dallas was once 9-14 this season, but the Mavs have battled all the way back to a .500 mark. If Doncic and Porzingis stay healthy, a strong second half should be waiting for them on the back end of the ledger.
Nothing to Worry About for Nets
The Nets have played three games without two of their three All-Stars since Harden was traded to Brooklyn from Houston in mid-January.
One game resulted in a fantastic comeback win over the Phoenix Suns in which the Nets were down 24 points on the road. The other finished with the Philadelphia 76ers encountering little trouble in a 124-108 home win.
The third game happened Saturday, and Brooklyn simply didn't have the firepower to keep pace with Dallas.
There really isn't much to be upset about after this loss, even if it was noncompetitive in the fourth quarter.
Yes, Dallas did whatever it wanted on offense, and yes, the Nets offense was poor in the second half. But this obviously isn't the team that the Nets will send out for games that matter the most come the spring and summer.
Durant, Irving and Harden will all hopefully be healthy in the postseason, which means they'll resume effortlessly dropping 120-plus points per game.
Plus, the Nets didn't lose any ground in the standings to the first-place 76ers. Things are a bit rougher Saturday if you shoot down I-95, as Philadelphia lost 112-109 at home to the Cleveland Cavaliers in overtime. The 13-21 Cavs are languishing near the bottom of the Eastern Conference table.
While the 76ers were without Tobias Harris (right knee contusion), they still had All-Stars Joel Embiid and Ben Simmons and couldn't get the job done despite a monster night from Embiid.
That's the type of loss that should concern a team moving forward. As for this Nets loss, it ultimately doesn't mean much of anything. The important thing is to get everyone back healthy and continue building on the momentum created from the recent eight-game winning streak.
Both teams will play road games Monday.