The battle to be the world's top-ranked golfer will again be a subplot of this week's PGA Championship which starts on Thursday here at Wentworth.
Luke Donald, who deposed Lee Westwood at the top of the rankings when winning last year's title, is the only player who can topple current number one Rory McIlroy but needs to repeat his victory of 12 months ago to do so.
However McIlroy performs, Donald has to finish eighth alone or better to have any chance of reclaiming his place at the head of the rankings.
A win for Westwood, who displaced Tiger Woods as number one in October 2010, would leave him just short of top spot.
Donald will start the defence of his title playing with England's Justin Rose and Spaniard Alvaro Quiros for the first two rounds whilst McIlroy is grouped with three-time major winner Ernie Els from South Africa and Scotland's Martin Laird.
Westwood is grouped with Ireland's Graeme McDowell and Thomas Bjorn from Denmark.
There are a record number of 14 major champions in the field including Els who with his course designer hat on has made more changes to the course.