The first World Golf Championship in Asia opened yesterday to a leaderboard filled with Stars & Stripes, led by wide-eyed Nick Watney and his 8-under 64 that tied the course record at the HSBC Champions and including, as always, Tiger Woods.

Watney kept it down the middle and close to the flag at Sheshan International Golf Club. He made an eagle and ran off four straight birdies while building a two-shot lead.

“It was just one of those days where everything was feeling really good, so I wasn’t too jumpy,’’ Watney said.

Ryan Moore wasn’t about to pass up a trip to China when he qualified by winning his first PGA Tour event in August. With a new equipment deal in place, he shot a 6-under 66 to join Shane Lowry of Ireland and Martin Kaymer of Germany, who is second in the Race to Dubai and facing a big week at this $7 million event.

Woods was the star attraction, although it was demanding as ever.

Standing composed over his opening tee shot, he flinched all the way through his swing and let the 3-wood drop at impact upon hearing the shutter of so many cameras, inside and outside the ropes.

“The guy in the grandstand basically did almost a photo sequence,’’ Woods said. The shot was so short, buried in deep rough right of the fairway, that caddie Steve Williams had to walk 40 yards to find the yardage on a sprinkler.

It was a frenzy for the opening hour, with marshals barking at the gallery not to take pictures, and Thongchai Jaidee’s caddie having to walk up to a grassy hill and escort one photographer to the side of the ropes so his player could hit the shot.

Ultra-sensitive when it comes to cameras, Woods handled this day better than most and chalked it up to a maturing golf crowd in China. More frustrating was not knowing where his ball was going throughout a gorgeous afternoon. Still, Woods took care of the par-5 holes and made enough putts to get around in 67.

Woods was joined by Anthony Kim, Paul Casey, and Lin Wen-tang of Taiwan, giving some local flavor to Asia’s biggest tournament.

Casey had reason to be thrilled with his start, no matter how many shots he feels as though he squandered. It was the first time he kept score over 18 holes since the final round of the British Open. He missed three months with a rib injury, returning last week in the World Match Play Championship.

Matt Kuchar and Pat Perez were among those at 68, while Phil Mickelson, Jason Dufner, and Brian Gay checked in at 69. Of the top 20 on the leaderboard through the opening round, nine were Americans.