OKLAHOMA CITY - Dirk Nowitzki scored 40 points, Jason Kidd hit the go-ahead three-pointer with 40 seconds left in overtime, and the Dallas Mavericks overcame a 15-point deficit in the final five minutes of regulation to stun the Oklahoma City Thunder, 112-105, on Monday night in the Western Conference finals. The Mavs lead the series, three games to one.

Dallas didn't lead until Nowitzki hit two free throws 16 seconds into overtime, needing to rally from a 99-84 deficit in the final five minutes of regulation. The Mavericks never let the Thunder go ahead in the extra period.

Kevin Durant missed a three-pointer on Oklahoma City's opening possession of overtime, then didn't get another shot until he missed a trey off the front rim in the final 10 seconds with the Thunder down by five. He had 29 points and 15 rebounds.

Noah fined $50,000

MIAMI - Chicago Bulls center Joakim Noah was fined $50,000 for directing an antigay slur at a fan during Game 3 of the Eastern Conference finals and vowed to learn from the incident.

The NBA released its decision hours after speaking with Noah, saying the fine was "for using a derogatory and offensive term from the bench."

The fine is only half of what Los Angeles Lakers star Kobe Bryant was assessed for shouting the same slur toward a referee last month, and the league said the discrepancy was because the sanction against Bryant was based on both what he said - and who he said it to.

"Kobe's fine included discipline for verbal abuse of a game official," NBA spokesman Mark Broussard said.

Noah and NBA officials met in the morning. Noah said he emerged from that talk prepared to "pay the price" for what happened when he returned to the bench with two fouls midway through the first quarter of Sunday night's 96-85 loss at Miami. The Heat take a two-games-to-one lead in the best-of-seven series into Game 4 Tuesday night in Miami.

That price turned out to be 1.6 percent of his roughly $3.1 million salary this season. Noah agreed to an extension last year, worth about $60 million through the 2015-16 season.

Meanwhile, an advocacy group called upon the league to both sanction Noah and help further educate players.

The Gay & Lesbian Alliance Against Defamation (GLAAD) said it reached out to the NBA and the Bulls "to discuss next steps," and called upon the league to reiterate to its players that antigay words should not be tolerated in the game.

Blazers fire GM Cho

PORTLAND, Ore. - The Portland Trail Blazers abruptly dismissed general manager Rich Cho after less than a year on the job.