John Collins had 35 points and 17 rebounds, Trae Young scored 13 of his 27 points in the fourth quarter and the Atlanta Hawks rallied late to beat the Dallas Mavericks 111-107 on Saturday night.
Collins' follow shot, credited after a goaltending call was overturned, sealed it with 8.4 seconds remaining.
Tim Hardaway Jr. scored 20 of his season high-tying 33 points in the first half and Seth Curry added 22 for Dallas, which couldn't overcome a depleted roster.
The game was billed as a showdown between Luka Doncic and Young, two second-year All-Stars linked together since a draft-night trade in 2018, but the matchup never materialized.
Doncic, who led Dallas to a win over Orlando the night before, was held out so he could rest his ankle, meaning that he and Young won't face each other again until next season. Doncic missed a 123-100 Mavericks victory against Atlanta earlier this month in Dallas with a similar injury.
The Mavericks were also without Kristaps Porzingis, sidelined to rest his knee, and Willie Cauley-Stein, who missed the game for personal reasons.
Young had a sluggish start two nights after scoring a career-high 50 in a stirring home win over Miami, but he got hot in time to keep Dallas from moving over .500 for the first time since February 2015. The Hawks took their first lead of the game with 5:24 remaining on Dewayne Dedmon's basket. Hardaway hit a 3 to put Dallas back ahead before Young hit a long 3 and Collins had two free throws to give the Hawks a 107-104 lead with 1:13 remaining.
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Hardaway tied it at 107-all with a 3, but Young hit a layup with 57.5 seconds remaining.
The Mavericks led by as many as 16 midway through the second on Delon Wright's layup before the Hawks pulled within four on Collins' alley-oop dunk at the 9:06 mark of the third.
The Hawks, who rank last in 3-point shooting, missed 10 of their first 11 shots beyond the arc and finished at 21.6% on 31 attempts.
Mavericks: Dropped to 19-9 on the road, but they're still among the league leaders away from home after winning a combined 18 road games over the two seasons combined.
Hawks: Collins, who tied a career high in scoring, leads the NBA this month with six games of at least 20 points and 10 boards. ... F De'Andre Hunter missed the game for personal reasons.
Guard Jalen Brunson became the latest Mavericks player to get hurt, leaving with a right shoulder sprain on the first possession of the game.
Dallas already was without its two leading scorers when Brunson was fouled by Dedmon while driving for a layup. He went straight to the locker room after shooting a foul shot and was soon ruled out.
That left the Mavericks, tied for the sixth spot in the Western Conference, with 10 available players.
Brunson and Curry started in place of Doncic and Porzingis as coach Rick Carlisle went with a three-guard lineup.
Doncic was held out in the second night of a back-to-back to rest the right ankle he has sprained twice, an injury that sidelined him both times. Porzingis missed his third straight back-to-back to rest his surgically repaired left knee.
Curry was questionable before the game with right knee soreness that kept him out of consecutive games earlier this month.
Dwight Powell was lost for the season to a ruptured right Achilles last month.
Mavericks: Host Minnesota on Monday.
Hawks: At Philadelphia on Monday.