Pinehurst is proving tricky for the world's best golfers as they start their US Open campaigns

Patrick Cantlay has the lead after a five-under 65 - but few players have managed under par rounds including Kiwi Ryan Fox who is three-over and 107th.

Tiger Woods - who shot a four-over 74 - and finished second behind Michael Campbell at the course in 2005 says it's really demanding.



Rory McIlroy and Bryson Dechambeau are shaping as the pick of the afternoon golfers - three-under through 12.

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