Australian Adam Scott and South African Louis Oosthuizen shot opening rounds of 65 to grab a share of the lead at the WGC-HSBC Champions. World number six Scott fired two birdies and an eagle in his last three holes at the Olazabal Course at Mission Hills Golf Club in Shenzhen in China to move to seven-under overall. Scott, who is chasing a second WGC title after last year&aposs Bridgestone Invitational, was thrilled with his effort on Thursday. “It was a solid day that all of a sudden turned into a really good day,” he said. “I hit a lot of good shots, and they ended up finishing close on the last couple holes and I took advantage of that. “With five par-fives, it sets up well for my game, and the plan is to just take advantage of the fives and hopefully hang in there with the leaders all week.” Former British Open champion Oosthuizen fired seven birdies in his round, including one from 15 feet on the ninth, to join Scott in the clubhouse. American duo Phil Mickelson and Bubba Watson both carded six-under 66s to share third place with last week&aposs BMW Masters winner Peter Hanson of Sweden. Early leader Shane Lowry, who won the Portugal Masters last month, also finished the day at six-under after closing with back-to-back bogeys. Dustin Johnson and Prom Meesawat were back in equal seventh place at five-under ahead of former world number one Luke Donald, who headlined a group of five players at four-under. Of the remainder of the Australian contingent, Scott Hend is five shots of the pace at two-under while Greg Chalmers is at one-under. John Senden, meanwhile, is tied for 34th at even-par after shooting a 72.