OKLAHOMA CITY – San Antonio fought off Father Time, the league MVP and an injury to a top player to return to the NBA Finals.

The Spurs beat the Oklahoma City Thunder 112-107 in overtime Saturday night in Game 6 of the Western Conference finals to set up a rematch with the Miami Heat.

San Antonio will host Game 1 on Thursday night and will try to avenge last year’s heartbreaking loss. San Antonio led Miami 3-2 before losing Game 6 in overtime, then dropping Game 7.

“People keep talking like we weren’t close to winning, but we were ready to win last year,” Spurs standout Tim Duncan said. “We’re happy it’s the Heat again. We’ve got that bad taste in our mouths still.”

A trio of 30-somethings led the way for the Spurs. Duncan had 19 points and 15 rebounds, Boris Diaw scored 26 points and Manu Ginobili chipped in 15 points and six rebounds for the Spurs.

San Antonio pulled this one out despite All-Star point guard Tony Parker missing the entire second half and overtime with left-ankle soreness. Coach Gregg Popovich said Parker had been struggling with the ankle since Game 4 of the series.

It was the third-best playoff scoring effort of Diaw’s 11-season career and his best since 2006.

“Boris was amazing,” Duncan said. “He had an unbelievable game.”

Russell Westbrook contributed 34 points, eight assists, seven rebounds and six steals, and MVP Kevin Durant added 31 points and 14 rebounds for the Thunder.

But Oklahoma City committed 20 turnovers that led to 33 Spurs points.

“It’s just tough losing like this, man,” ex-Sonic Durant said. “There’s not much more I can say.”