San Antonio Spurs guard Tony Parker (9) celebrates with Tim...

San Antonio Spurs guard Tony Parker (9) celebrates with Tim Duncan, center, and Stephen Jackson, right, after hitting a buzzer-beating basket at the end of regulation to beat the Oklahoma City Thunder. (Nov. 1, 2012) Credit: AP

SAN ANTONIO — Tony Parker sank a 21-foot jumper as time expired and the San Antonio Spurs won a thrilling rematch of the Western Conference finals, beating the Oklahoma City Thunder 86-84 on Thursday night without having to chase around James Harden this time.

Parker scored the last of his 14 points while Serge Ibaka — the NBA's leading shot-blocker last season — ran at him full steam. The All-Star guard calmly swished a long jumper from the left wing before breaking into a long, sustained scream while his teammates mobbed him in front of the Thunder bench.

Throw in the trade that sent Harden to Houston, and it was the second Thunder stunner this week.

The defending West champions broke up their Big Three by trading the NBA's Sixth Man of the Year to Houston on Saturday. Harden had 37 points and 12 assists in a brilliant debut with the Rockets on Wednesday night.

Speaking before the season opener, Thunder coach Scott Brooks succinctly acknowledged Harden's performance before saying his team was moving forward.

Until Parker's game-winner, it was almost as if nothing had changed for Oklahoma City.

Durant also had 14 rebounds. Russell Westbrook scored 18 points but made a poor pass on the Thunder's final possession that gave the ball back to the Spurs with 5.9 seconds left, giving Parker plenty of time to set and release his shot.

The Thunder are starting anew with newcomers Kevin Martin and Jeremy Lamb, who along with draft picks, are what the Thunder got in exchange for their third-leading scorer. Small-market Oklahoma City wasn't willing to offer Harden a maximum contract, and the No. 3 overall pick in the 2009 draft wouldn't accept its lesser offer.

By Wednesday, Harden had agreed to a five-year, $80 million extension with the Rockets. That night, he stepped into Houston's starting lineup and became the first player in NBA history to have more than 30 points and 12 assists in a debut with a new team.

Asked before Thursday's game whether the second-guessing had begun, Brooks didn't linger on the topic.

"He's played good basketball. He had a good game," Brooks said. "We're real focused on our group, our guys and moving forward."

Martin had 15 points and was Oklahoma City's only bench player in double figures. But backup Eric Maynor made his own big contribution, hitting a half-court heave to tie the game at the end of the third quarter.

Notes: Spurs C DeJuan Blair made his season debut after coach Gregg Popovich kept him on the bench in Wednesday's opener at New Orleans, which prompted a clearly frustrated Blair to take to Twitter after the game. Blair, who started 62 games last season but was stuck on the bench by the playoffs, insisted he wasn't complaining but at one point tweeted, "I'm might not b tall enough." ... Duncan surpassed Charles Barkley for 17th on the NBA's career rebounding list.

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