Jason Day outclassed Denmark&aposs Thomas Bjorn when it mattered most to deliver Australia a breakthrough World Cup of Golf victory at Royal Melbourne on Sunday. Day started the final round one shot ahead of Bjorn and was tied for the lead with the Dane with three holes to play. But Bjorn bogeyed the par-four 16th and Day, who found a bunker on the same hole, made a clutch par save to stay on 10-under and take the outright lead. He stood firm with pars on the closing two holes – while Bjorn bogeyed the last – to win by two shots. The victory was especially emotional for Day who is grieving the death of his grandmother and seven other relatives in Typhoon Haiyan in the Philippines. Fellow Australian Adam Scott posted an impressive five-under-par final round 66 to finish in third place on seven under. Scott started the day seven shots behind Day but charged into contention with an eagle and two birdies on the first three holes. He got as close as one shot from the lead with a birdie on the 16th to reach eight under. However his hopes of a third straight win following his Australian PGA and Masters victories were dashed when he bogeyed the last. Day and Scott&aposs combined 17-under total was 10 shots clear of the second-placed United States. It is Australia first World Cup triumph since Wayne Grady and Peter Fowler claimed it in 1989. Day received a $1.2 million first prize, while he and Scott shared $600,000 for winning the team competition and Scott picked up $490,000 for placing third.