Xander Schauffele has made it a clean sweep of American winners in the World Golf Championships. Schauffele birdied his last two holes Sunday for a 4-under 68 and then two-putted for birdie on the par-5 18th in a playoff to beat Tony Finau and win the HSBC Champions. Schauffele began the week in Shanghai by celebrating his 25th birthday. He ended it with a tight finish at Sheshan International for his first victory since the Tour Championship last year. Finau, who closed with a 71, hit into a bunker in the playoff, had to lay up and narrowly missed a 20-foot birdie to extend the playoff. Defending champion Justin Rose shot 72 and finished third, missing out on a chance to return to No. 1 in the world.