Tiger Woods, perhaps the best front-runner in world sport, practises his putting under the gaze of coach Hank Haney

England's Luke Donald greets the man he must beat to win his first major title and Europe's first USPGA victory since 1930

Donald lines up a birdie putt at the 1st knowing he must take every chance he gets at Medinah on Sunday

Woods makes a great start to his fourth round, birdieing the 1st and only just missing this chip at the 2nd

While Woods continues his relentless pursuit of major titles, the normally accurate Donald is struggling to find fairways

And the hoped-for challenge from Sergio Garcia fails to materialise as he continues to struggle on the greens

Mike Weir puts up something of a fight, however, and it is good to see the Canadian back in form

But it seems the only man that can really stay with the remarkable Woods at Medinah is his caddie Steve Williams

Donald's challenge is over fairly early on as he gets a few bad breaks and lips out with a handful of putts

Shaun Micheel, the 2003 champion, puts a couple of years in the wilderness behind him to finish best of the rest

But one man continues to dominate the world of golf as he seals a 12th major win - Tiger Woods