SACRAMENTO, Calif., March 16 (Ticker) -- Steve Nash, one of the most exciting players in the NBA, took charge of another exciting game between the Dallas Mavericks and Sacramento Kings.

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Nash forced overtime with a 3-pointer, then scored 12 points in the extra session to lead the Mavericks to a 129-123 victory over the Kings in a sensational shootout.

"It's good to finally beat a team that you haven't beat all year," Mavericks guard Michael Finley said. "Our confidence is high but to come in here, in a hostile environment, and get the win, we're going to use this the rest of the season."

The best two offensive teams in the NBA have staged a handful of exciting games over the last two seasons, including four overtime contests. Dallas has won three times at raucous Arco Arena, but Sacramento has the overall upper hand, taking 10 of 13 games, including four of five in last year's Western Conference semifinals.

The Kings had won the first three meetings of 2002-03, establishing superiority over the Mavs, who have had the NBA's best record all season. But Nash made sure his team was not swept while it sent a subtle message of its own.

"I finally made the shot that sent us into overtime," Nash said. "I felt we deserved it. I thought we played well enough and hard enough. We deserved a break at the end of the game."

A seesaw fourth quarter saw Mike Bibby beat the shot clock with a 17-footer that gave Sacramento a 111-108 lead with 14 seconds left. On the next possession, Nash missed a 3-pointer, but Finley got the rebound as Nash floated to the right corner, where he buried the tying shot with 2.5 seconds to go.

"They got the board and Nash was open," said Kings guard Bobby Jackson, who lost defensive position on the play. "That's how the ball bounces sometimes."

Nash collected 27 points and 10 assists and was unstoppable in overtime. His 3-pointer gave Dallas a 116-114 lead with 2:51 remaining.

After a 3-pointer by Peja Stojakovic gave Sacramento its last lead, Nash made a difficult one-handed fadeaway shot and a jumper for a 120-117 edge with 1:26 to play. Dirk Nowitzki drew a foul and sank two free throws to push the lead to five points in the final minute.

"Jackson is a good defender. I just tried to be aggressive," said Nash, who made 11-of-17 shots.

Chris Webber's third 3-pointer of the season kept the Kings in it at 122-120 with 47 seconds remaining, but Nash buried a 3-pointer just 12 seconds later. Finley and Nash added two free throws each around a 3-pointer by Jackson to seal it.

"We stood up to the challenge and made some good plays," Nowitzki said. "The first two out of three games (against the Kings), we didn't make plays down the stretch and they did. It was nice because Steve stepped up and made the plays."

"Nash hit some big shots in overtime," Kings coach Rick Adelman said. "You have to give them credit. They came in and played well."

Nowitzki had a huge game with 34 points and 18 rebounds and Finley scored 21 points for the Mavs (50-16), who became the first team to win 50 games and maintained their Midwest Division lead over surging San Antonio.

"They have a very good team and that is an understatement," Mavs forward Adrian Griffin said. "We just had to come out and put forth the effort. We know what they can do and they know what we can do, it just came down to, like, a heavyweight fight, two of the best teams going at it, and we just felt like we needed this game."

Nash and Mavs coach Don Nelson were more concerned with the advancing Spurs than their ability to beat the Kings. Dallas plays San Antonio twice this week.

"It didn't feel like we had a monkey off the back against Sacramento," Nelson said. "The Kings have still outplayed us this year. Because we won an overtime game doesn't mean that much to me. What is does do for our team is keep us in the division race with San Antonio."

"We can't lose, or San Antonio is going to catch us," Nash said. "I don't think this game will have any bearing on the playoffs."

Stojakovic scored 30 points and Webber added 24 and 15 rebounds for the Kings, who fell to 28-6 at home.

The game featured 13 players in double figures, seven for the Kings. There were eight ties and 18 lead changes, including three and nine in the fourth quarter and overtime. A jumper by Finley gave Dallas a 93-86 lead with 10:27 left in the fourth quarter, but two 3-pointers by Stojakovic highlighted a 12-0 burst that gave Sacramento a 98-93 advantage with 6:11 to go.

Nash found Eduardo Najera for a reverse layup to reclaim the lead for the Mavs at 105-104 with 2:13 remaining. Sacramento's Mike Bibby made a 3-pointer before Nash tied it by following in his own miss at the 1:32 mark.

After Najera split a pair from the line, Webber atoned for a miss with a jump hook that gave the Kings a 109-108 lead with 56 seconds left. Nick Van Exel missed a jumper, setting up Bibby's shot.

"They made a run in the fourth quarter and we didn't fold," Nowitzki said.

Van Exel scored 17 points, Griffin added 12 and nine rebounds and Raef LaFrentz scored 10 points for Dallas, which shot 47.5 percent (47-of-99), including 10-of-25 from the arc. The Mavs held a 55-49 rebounding edge.

Jackson scored 14 points, Bibby added 12, Hedo Turkoglu 11 and Doug Christie and Vlade Divac 10 apiece for Sacramento, which shot 45 percent (46-of-102), including 11-of-23 from 3-point range.