World number two Phil Mickelson held his nerve at the second play-off hole to edge out English duo Ross Fisher and Lee Westwood to win the HSBC Champions and claim his first overseas title in 14 years as Australian Nathan Green struggled on the final day in Shanghai. Overnight leader Mickelson, though, held a five-stroke advantage over Fisher through seven holes of his final round, but dropped six shots in eight holes to hand Fisher a one-stroke lead heading up the last. But after Fisher shot a double bogey at the last and Mickelson could only manage a bogey six after finding water with his second shot, the pair dropped to 10-under-par overall and a three-way tie with Westwood. Westwood had stormed up the final round leaderboard with a final round five-under-67, which included six birdies on the back nine. All three had birdie chances at the first play-off hole, but after Westwood and Mickelson both narrowly missed, Fisher held his nerve to two-putt from eight feet. At the second play-off hole, Westwood found water at the front of the green and Fisher hit his second into greenside bunker, with Mickelson on the fringes of the green. Westwood, following a drop, played his fourth shot through the green and agonisingly down the slop into the water, while Fisher chipped out of the bunker to within eight feet in four. But Mickelson played a deft flop to four feet with his third, and after Fisher missed, the American holed his birdie putt to claim the first prize and &aposChampion of Champions&apos title. American Kevin Stadler finished fourth at nine-under, while Open champion Padraig Harrington was a shot further back with Vijay Singh after a final round one-under-par 71. It was a disappointing day for the Australian contingent as Nathan Green failed to take advantage of the leaders stumbling. Green started the day on six-under overall, but a six-over 78 on the final day saw him finish on even-par for the tournament, 10 strokes behind the three leaders. Three strokes further back were Scott Hend and John Senden while early Australian leader Brett Rumford also slumped badly on his final day, finishing with a five-over 77 to be four-over overall for the tournament. Marc Leishman was further back at six-over as Rod Pampling and Nick O&aposHern struggled at nine-over par overall, with Paul Sheehan finishing the tournament at 17-over after two consecutive rounds of 78 over the last two days.