Adam Scott fired a course record 64 to grab the Grand Slam of Golf title at Port Royal today.The Australian came from four shots behind overnight leader Justin Rose to finish the 36-hole tournament at eight under par, having started the day at just one-under.After carding five birdies in the first 15 holes, he capped an astonishing round with an eagle at the par-five 17th following a shot which stopped just a couple of inches from the cup.Scott’s round today was the best since the tournament arrived in Bermuda seven years ago.Englishman Rose seemed destined for the championship after reeling off four successive birdies on the front nine but there were no more, his card marred by two bogeys to finish with a 69.PGA Champion Jason Dufner was third at three-under after recording a one-under 70.Padraig Harrington shot even par but the damage had already been done in the first round when he struggled to a three-over-par 74.Scott picked up $600,00 for the victory, Rose $300,000, Dufner $250,000 and Harrington $200,000.