US Open winner Justin Rose insists it will be “business as usual” when he steps on the first tee for the opening round of the Grand Slam of Golf at Port Royal tomorrow.While some might label it as a fun event, Rose views the competition slightly differently.Sure, the 33-year-old intends to enjoy some stress-free golf in picturesque surroundings but has no doubt the competitive juices will start flowing as soon he looks his three rivals in the eye.“We’re all competitive and once you step on the first tee, once you’re in a tournament, once you see the spectators out there, once the TV cameras are going, and once you look the other guys in the eye you want to play your best golf,” he said.“There’s no doubt you want to balance having a good time as well as playing well, but once the scorecard is in your hand it’s business as usual.”Rose, who turned professional in 1998, admitted he removed the proverbial monkey off his back by claiming the US Open at Merion Golf Club’s celebrated East Course in June. And although he feels “fortunate” to have won a major, especially considering the esteemed names never to have done so, he believes becoming a multiple major winner is not beyond his reach.“The tournaments I’ve been winning have been getting bigger and bigger and I hoped this year would be the one I made the jump into winning a major,” he said.“There’s been a lot of good players who have gone before me who never had a chance to win a major and I feel very fortunate to have got it done.“It’s a monkey off my back and hopefully it’s just the start — that’s the way I’m feeling.”One multiple major winner targeting a second Grand Slam triumph in Bermuda is Padraig Harrington.Harrington twice finished runner-up, in 2007 and 2008, before landing the pink jacket last year.The Irishman admits he enjoys a “slight advantage” over Rose, Jason Dufner and Adam Scott, who complete this year’s elite foursome.But such is the trio’s golfing intelligence, Harrington doesn’t believe it will take long for them to get to grips with the deceptively tricky Port Royal.“It’s my fourth time in Bermuda, second time at (Port Royal), and I do know the lie of the land, for sure, and I know what to expect on and off the course,” said Harrington.“I do have a slight advantage but to be honest these players have the quality to learn the nuances of the golf course very quickly.“It would nice to get back-to-back victories: I really should have won in 2007 and 2008, so it was nice to come back last year and win.‘It’s nice to be back and I only have to beat three other guys!”