SHENZHEN, China — Louis Oosthuizen and Adam Scott took advantage of the par 5s at Mission Hills and each had a 7-under 65 on Thursday to lead the HSBC Champions after the first round.

Oosthuizen, who won the British Open at St. Andrews two years ago, played bogey-free and birdied all five par 5s on the Jose Maria Olazabal-designed course. Scott, the runner-up at the British Open this summer, made four birdies and an eagle on the par 5s.

Two-time HSBC Champions winner Phil Mickelson was a stroke back along with Masters champion Bubba Watson, Shane Lowry of Ireland and Peter Hanson of Sweden, who can overtake Rory McIlroy on the European Tour money list with a victory.

Columbia’s Dustin Johnson had a 67 and was two strokes behind.

Birdies boost Blake

At Scottsdale, Ariz., defending champion Jay Don Blake birdied three of the final four holes for a 6-under 64 and the first-round lead in the Champions Tour’s season-ending Charles Schwab Cup Championship.

The 54-year-old Blake had a one-stroke lead over Gary Hallberg.

Fred Couples, Greer’s Jay Haas, Olin Browne and Bill Glasson shot 66 on Desert Mountain’s Cochise Course.