Defending champion Rory McIlroy is fighting to make the cut at the US Open.
With the projected cut falling at 4 over, McIlroy is struggling on 8 over after 4 holes of his second round.
Elsewhere on the leaderboard, Graeme McDowell is three shots off the lead on 1 under after three holes.
Tiger Woods will resume from 1 under.
Overnight leader Michael Thompson will tee off from 4 under.
While Padraig Harrington will tee off later from 4 over.
Peter Lawrie is also struggling on 9 over.