Australian golfer Jason Day has made a solid start and continues to hold a piece of the lead in the final group of the US Open at Chambers Bay.
Day has played the opening three holes to par despite still suffering the after affects of vertigo.
The world No.10 shares the lead at four under par with American Dustin Johnson and South African Branden Grace.
Masters champion Jordan Spieth is one shot back at three under while world No.1 Rory McIlroy is six under on his round to jump up to two under.
Australian rookie Cameron Smith is sixth at one under and Adam Scott is tied seventh at even par.
Day is still noticeably ginger and deliberate as he tries to get through the toughest test in golf.