Three birdies in the last six holes help Olin Browne fire a 67 - earning the early clubhouse lead at three under

American Rocco Mediate also has an impressive round - his 67 sees him join Browne at the head of the field

South Africa's Retief Goosen begins the defence of his title with a useful 68 - leaving him a shot off the lead at two under

Korea's KJ Choi finishes a shot behind the clubhouse leaders after firing a two-under-par 68

Brandt Jobe reaches four under with a birdie at the 10th but dropped shots prove costly as he ends a shot off the lead

Despite suffering with a chest infection England's Lee Westwood joins Goosen and Choi on two under

England's Luke Donald is a shot behind Westwood - joining several players on one under after firing a 69

World number one Tiger Woods struggles in the tricky wind - starting his challenge with a level-par 70

1996 champion Steve Jones endures an up and down round - eventually finishing at one under after shooting a 69

Ernie Els has an indifferent opening round - failing to trouble the leaders as he finishes one over

England's Ian Poulter suffers a torrid start to his tournament - a disappointing 77 sees him way off the pace on seven over

Home favourite Phil Mickelson makes a bright start and progresses to two under following a birdie at the eighth