But with Westwood, defending champion Phil Mickelson and PGA Championship winner Martin Kaymer all featuring in the Shanghai showpiece, it could be an epic battle to decide who tops the world rankings by the end of the week.

This match-up at the WGC-HSBC Champions marks the first time since 1997 that four players have the chance to take over the top spot at an event.

Apart from the battle for world number one supremacy, Woods is also wary of the Asian challenge too.

"There are more Asian players here than we have in other WGC events as they are more American and European biased. It's exciting as you see a lot of players who have been playing well on the Asian Tour and Japanese Tour here and that's something which we don't usually see of this quantity," said Woods.

Meanwhile newly-crowned world number one Westwood is aware that his stay at the top will have to be matched by his consistency in play and is concerned that his troubled calf injury might put a damper on his stay at the top.

"Obviously it's very nice to be at the pinnacle of the sport. However, it's one thing getting there and one thing staying there.

"It's going to be tough this week as I've to play well and it may not be easy as I'm bound to be a bit rusty as I've not been playing a lot recently," said the Englishman.

"It's taking a while to recover and it's still not right but I'm getting bored of sitting at home doing nothing and all the people I've seen have said that I can't do any more damage so I've to come out and walk around and that may do it a little bit of good," added Westwood.

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