Federer gets crown
In this season-ending event for the top eight players in the world, Federer's three group-stage victories included his most comprehensive win ever over Rafael Nadal, beating the Spaniard, 6-3, 6-0, on Tuesday.
"I know it's one of my greatest accomplishments," Federer said. "This definitely is an amazing finish again to the season. I've never finished so strong."
Playing in his 100th career final, Federer broke for a 5-3 lead in the deciding set and served out the match to love, sealing his 70th career title with an easy volley.
Americans come back
The American pair fired six birdies in the alternate-shot final round at Mission Hills Blackstone course to finish at 24-under 264.
Chalmers wins in playoff
Australian Greg Chalmers won the Australian PGA in Coolum with a par on the first playoff hole, after Robert Allenby and Marcus Fraser hit errant drives. Chalmers shot 5-under 67 on the Hyatt Regency resort course to match Allenby (68) and Fraser (69) at 12-under 276 after 72 holes. Fraser got into the playoff with a cup-hanging, then dropping 50-foot birdie putt on the 18th.
Bubba Watson, who trailed by one stroke going into the final round, hit his tee shot into a lake on the first hole and ended up with a double-bogey 7 on the way to a 5-over 77.
Webber wins in Brazil
Mark Webber won the season-ending Brazilian Grand Prix after Red Bull teammate Sebastian Vettel struggled with a gearbox problem. Vettel, who had already secured the Formula One title, still finished second after letting Webber pass him almost halfway through the race at the 2.6-mile Interlagos track in Sao Paulo. Jenson Button of McLaren finished third to secure second place in the drivers' standings.