SAN ANTONIO — The San Antonio Spurs have been here before.

Tony Parker scored 22 points, Danny Green added 21 on seven 3-pointers, and San Antonio used a dominant third quarter to pummel Oklahoma City 112-77 Wednesday night and take a 2-0 lead in the Western Conference finals.

The Spurs were in the same position in 2012 before the Thunder won four straight to capture the series and stun a Spurs team that appeared to have its best days behind it.

Well, San Antonio is back in the conference final with a commanding lead, wiser and even older.

“I know after the game, nobody is very happy in the locker room,” Parker said. “Everybody is very focused, and we respect that team. We know they’re very capable of a comeback, and they did that against us in 2012. We’re just very focused and nobody is satisfied.”

Game 3 is Sunday at Oklahoma City, where the Thunder will try to bounce back from the worst playoff loss in franchise history.

“It definitely doesn’t feel good, and it shouldn’t,” Oklahoma City coach Scott Brooks said. “I hope our entire locker room doesn’t feel good. We got our butts kicked.”

Playing without Serge Ibaka and given two days to adjust to dropping Game 1 by 17 points, the Thunder performed even worse.

Parker and Green each had eight points in the third quarter and San Antonio outscored Oklahoma City 33-18 in the period.

Kevin Durant and Russell Westbrook each finished with 15 points, but the third-quarter barrage made spectators of both in the fourth.