How it happened: Golden State simply dominated Dallas for most of the game.
The Warriors went on a 21-6 run to close the first quarter and never let the Mavs back into the game.
The Mavs had a miserable night on both ends of the floor. They had their worst shooting night of the season (36.6 field goal percentage) and allowed the Warriors to shoot 51.2 percent from the field.
Dallas actually did a solid job defending All-Star point guard Stephen Curry, who was held to 10 points on 4-of-12 shooting, but reserve guard Jordan Crawford torched the Mavs in the second quarter. Crawford scored 12 of his 19 points in the second, when he made five of six shots and the Warriors' lead swelled to 18 points.
Dallas' All-Star never got going in this game, either. Dirk Nowitzki finished with 12 points on 4-of-11 shooting, pulling even with Boston Celtics legend John Havlicek for 12th on the NBA's all-time scoring list.
It was the second consecutive off night for Nowitzki, but unlike in Sunday night's win over the Indiana Pacers, the rest of the Mavs weren't able to generate much offense. Only four Mavs scored in double figures, led by Monta Ellis' 15 points.
Adding injury to insult, key Mavs reserve guard Devin Harris left the game in the second quarter because of a sore right Achilles tendon and did not return.
What it means: So long to the Mavs' hopes of earning the Western Conference's sixth seed. Golden State (41-24) has a three-game cushion over Dallas after their convincing win. The Mavs (38-27) fell to eighth place, percentage points behind the Memphis Grizzlies and only one game ahead of the Phoenix Suns. The Mavs have a three-game road losing streak entering Wednesday night's game in Utah.
Play of the game: Andre Iguodala had amazing displays of athleticism on both ends of the court in a matter of seconds. First, he killed a Dallas fast break by stuffing Shawn Marion's dunk attempt with his left hand, leading to a transition opportunity for Golden State. After Curry missed a pull-up 3-pointer, Iguodala came flying in for the right-handed putback slam. The dunk stretched the Warriors' lead to 17 points with 2:40 remaining in the first half.
Stat of the night: Jose Calderon had a season-high six turnovers. He has had more turnovers in a game only four times in his nine-year NBA career.