DALLAS -- Stephen Curry scored 31 points, Andrew Wiggins added 27 while posterizing Luka Doncic on a dunk and the Golden State Warriors beat the Dallas Mavericks 109-100 Sunday night for a 3-0 lead in the Western Conference finals.
Klay Thompson scored 19 with a pair of big fourth-quarter three-pointers as the Warriors moved within a victory of a return to the NBA Finals, three years after the end of a run of five consecutive trips that yielded three championships.
Golden State, which swept Portland in its most recent West finals in 2019 before Toronto won the title, goes for the sweep in Game 4 on Tuesday in Dallas. No team has rallied from 3-0 down to win an NBA playoff series.
Doncic scored 40 and beat the first-quarter buzzer with a 32-footer that got the crowd going with the Mavericks again at home trailing 2-0, as they did against top-seeded Phoenix before winning the West semifinal series in seven games.
But that shimmy-inducing bucket was a blip on an otherwise rough night from three-point range for the Mavericks, who missed their first seven and finished 13 of 45.
Reggie Bullock and Maxi Kleber, two long-range specialists for Dallas, missed all 12 of their three-pointers combined and were 0-15 overall. Both went scoreless, offsetting Spencer Dinwiddie's 26 points off the bench. Jalen Brunson scored 20.
Wiggins' dunk over Doncic was originally ruled an offensive foul midway through the fourth quarter. The Warriors challenged, and the ruling was Wiggins' elbow to Doncic was incidental contact, giving Golden State a 93-83 lead.
About a minute later, Wiggins, who had 11 rebounds, moved quickly down the right baseline for a follow dunk on a miss by Curry as the Warriors extended their NBA record with a 26th consecutive series in which they won at least one road game.
One of Dinwiddie's three-pointers got Dallas within five points with 1:15 remaining, but Jordan Poole answered with one from the left wing just inside the final minute.
The most tense moment of the series came late in the first half after a corner three-pointer from Curry capped an 8-0 run that put the Warriors in front by a point and helped them to a 48-47 halftime lead. And it left Curry confused.
Curry ran the length of the court with his tongue hanging out after Dallas called timeout. As he circled back toward his bench, Curry walked by Doncic with teammate Juan Toscano-Anderson nearby.
Doncic appeared to take issue with something Toscano-Anderson said and started toward the Golden State bench before officials along with coaches and players from both teams intervened. Meantime, Draymond Green and injured Dallas guard Tim Hardaway Jr. exchanged unpleasantries about 45 feet apart.
After the timeout, Curry could been seen saying, "What happened?" and approached Doncic to talk about it. The exchange ended with Green as the peacemaker with Doncic.
Golden State Warriors forward Andrew Wiggins (22) celebrates after dunking the ball over Dallas Mavericks guard Luka Doncic, left, during the second half of Game 3 of the NBA basketball playoffs Western Conference finals, Sunday, May 22, 2022, in Dallas. (AP Photo/Tony Gutierrez)
Golden State Warriors forward Andrew Wiggins (22) dunks the ball over Dallas Mavericks guard Luka Doncic (77) during the second half of Game 3 of the NBA basketball playoffs Western Conference finals, Sunday, May 22, 2022, in Dallas. (AP Photo/Tony Gutierrez)
Dallas Mavericks guard Luka Doncic (77) reacts to a call during the second half against the Golden State Warriors in Game 3 of the NBA basketball playoffs Western Conference finals, Sunday, May 22, 2022, in Dallas. (AP Photo/Tony Gutierrez)
Golden State Warriors guard Stephen Curry (30) drives to the basket ahead of Dallas Mavericks guard Luka Doncic (77) during the second half of Game 3 of the NBA basketball playoffs Western Conference finals, Sunday, May 22, 2022, in Dallas. (AP Photo/Tony Gutierrez)
Dallas Mavericks forward Reggie Bullock (25) reacts after being called for a foul during the second half against the Golden State Warriors in Game 3 of the NBA basketball playoffs Western Conference finals, Sunday, May 22, 2022, in Dallas. (AP Photo/Tony Gutierrez)