(By JEFF LATZKE, AP Sports Writer) Kevin Durant bounced back from his worst playoff performance ever to score 39 points, Russell Westbrook had his first playoff triple-double and the Oklahoma City Thunder advanced to the Western Conference finals with a 105-90 victory over the Memphis Grizzlies in Game 7 on Sunday.Durant, the NBA scoring champion the past two seasons, followed the lowest-scoring game of his two postseason appearances with one of his best.