The 85th US PGA Championship got underway at Oak Hill Country Club's East Course this lunch-time in bright and dry conditions.
American John Guyton, playing from the first hole, and Australian Geoff Ogilvy, from the 10th, hit the opening shots of the day.
World number one Tiger Woods is among several big names with early starts. He tees off from the 10th at 2 p.m. in the company of defending champion Rich Beem and 2001 winner David Toms.
US Open champion Jim Furyk, tipped as a likely winner this week, is due to start from the first at 1.50 p.m. with US Masters champion Mike Weir and American Ben Curtis, shock winner of last month's British Open.
Ernie Els will tee off from the first alongside former British Open champions Justin Leonard and Mark Calcavecchia later this afternoon.
Padraig Harrington (5.55 p.m.) is the first of the Irish trio on the course. Darren Clarke and Paul McGinley get their rounds underway at 6.15 p.m. and 6.55 p.m. respectively.