The Irish golfer Graeme McDowell leads the US Open at Pebble Beach in California.
He's three under par after a second round of 68 while US world No.2 Phil Mickelson's stormed up the leaderboard into a four-way share of second after a five under 66 including six birdies and just one bogey.
World No.1 Tiger Woods carded a one over 72 for 25th equal.
New Zealander Michael Campbell's US Open run is over, the 2005 winner's missed the cut after an 83 left him 19 over par.
