Jason Day survived an incredible fightback from Victor Dubuisson to win the WGC-Accenture Match Play final.
The Australian looked in total control throughout the early stages of the match and was two up with two to play, before missing a 20-foot putt for the title on the 17th hole.
That gave Frenchman Dubuisson the opportunity to take the match down the 18th and he did so with a superb birdie, before scrambling for a par on the last as Day left his attempt short having run a lengthy birdie putt some 10 feet past the cup.
The real drama began, however, on the first play-off hole.
Dubuisson's approach flew long and into the desert, leaving what appeared an impossible chip shot. The French star had other ideas, though, and managed a miraculous bump and run to five feet which was enough to secure a par to extend the match.
The players were then sent to the ninth, where again Dubuisson produced a poor approach shot and found desert. But yet again, despite his ball being hidden under a branch, the 23-year-old produced one of the most remarkable up-and-downs in the history of televised golf as a bewildered Day looked on.
Neither player could manage a par on 10 with both missing mid-range putts, while Dubuisson missed a 25-foot putt for the title on the 14th, their 22nd.
However, with light fading rapidly Day managed to produce an excellent birdie on the short 15th and when Dubuisson's putt missed, the Australian was at last able to celebrate a first World Golf Championship title.