Defending US Open champion Geoff Ogilvy goes into this week&aposs tournament at Oakmont confident his game can withstand the demands of a course he regards as one of the toughest on the PGA Tour. Ogilvy, who turned 30 on Monday, has had a patchy 2007 with four top 10 finishes – including being runner-up to Henrik Stenson at the WGC-Accenture Match Play Championship – tempered by two missed cuts from 14 events. Despite missing the weekend action at last week&aposs St Jude Championship, the Adelaide-born golfer believes his form is slowly approaching that of last year, when he held on to win his first major after American Phil Mickelson and Scotsman Colin Montgomerie both self-destructed on the final hole at Winged Foot, carding double-bogey sixes to hand Ogilvy the title. “The greens here (Oakmont) are the obvious challenge, I mean everything else out there is similar to (other) US Opens – it&aposs narrowish fairways, pretty good rough, bunkers that are bad to be in,” Ogilvy said. “The greens here are something different, they&aposre amazing greens. I mean I like them, they&aposre actually probably some of my favourite greens I&aposve ever seen.” Now ranked eighth in the world, Ogilvy heads a star-studded Australasian contingent at the US Open, including Adam Scott (world No.4), Nick O&aposHern (23), Aaron Baddeley (24), Robert Allenby (25), Stuart Appleby (26), Rod Pampling (29), New Zealand&aposs Michael Campbell (83), Nathan Green (89), Andrew Buckle (113), Mathew Goggin (164), Steve Elkington (171) and Marcus Fraser (277). And he knows he will need to be near the top of his game if he is to overcome a testing course that includes gaping bunkers, treacherous rough and the longest Par 3 hole in major championship history at 263 metres. “The key here is to keep it inside the rough and under the hole on the green – you&aposre probably better off even off the green but under the hole than you are on the green but above the hole,” Ogilvy said. “I played quite well at Memorial a couple of weeks ago and didn&apost go so well last week so I&aposm not playing my best but it&aposs definitely on the right track. I could be two or three days away from playing really, really well so it&aposs in a good spot.”