England’s Luke Donald faces a US PGA Tour dilemma as he prepares to tee off in the European Tour's Dunhill Links Championship in Scotland on Thursday.
The world number one is attempting to become the first player to finish top of both prize money lists.
Donald leads Rory McIlroy by £1.4m in Europe's rankings, but is only £44,000 clear of Webb Simpson in the US.
The 33 year old is not planning to play in the last four US events but may change his plans if Webb Simpson overhauls him.
"Right now I'm not planning on playing another event in the US but I have to weigh up the pros and cons of trying to win the money list, for personal reasons and in terms of needing rest," said Donald. "I'm not sure whether Webb is playing an event either but he might be and then I'll be tempted to add one too."
Donald admits the lure of making history could force him to rethink.
"You're always trying to achieve things that no-one has ever done," said Donald. "It would be pretty special.
A huge first prize of £511,000 is on offer at this week's Dunhill Links pro-am event, which starts at St Andrews, Carnoustie and Kingsbarns today. World number two Lee Westwood and third-ranked Rory McIlroy will be hoping to put on their golf shoes, play their best and close the gap on Donald.
Oakley sponsored McIlroy, who won his first major with the US Open title earlier this year, believes he can still put plenty of pressure on his Ryder Cup team-mate in the coming weeks.
"If I concentrate on just trying to win tournaments then the Race to Dubai will take care of itself but I want to try to get closer to Luke and put a bit of pressure on him with a couple of events to go. I want to get a win before the end of the season and I feel that I'm playing well enough." said McIlroy.
Westwood, two-time European Order of Merit champion, sits fourth on the European money list, £1.6m off the pace.
But the 38-year-old feels his final three tournaments of the year present a good enough opportunity to move above his fellow countryman.
"Luke obviously thinks that the guys around him are good enough to win the rest of the events that he's playing," said Westwood, who is also eyeing the world number one spot.
"I feel like I can win here, China and Dubai and that will surely give me enough money to go past him."