McDowell in sole possession of lead

Graeme McDowell has opened a two-stroke lead after sinking a 10 foot downhill putt for birdie on the par-4, 331 yard 4th. 

Six way tie for second between Dustin Johnson - who followed a birdie on No. 10 with a bogey on No. 11 - Brendon de Jonge - who has four bogeys on the day - and Rafael Cabrera Bello, K.J. Choi, Mike Weir and Ian Poulter, who will all be teeing off later this afternoon.