The world number one spot could change for the sixth time in 11 weeks on Sunday - but the Players Championship is about more than just that.
It is about more than money as well, even though the £5.8million purse - well over £1million of it to the winner - is the biggest in golf.
What Rory McIlroy, Luke Donald, Lee Westwood and Tiger Woods all want to show is that their best is good enough to beat anybody on any course.
They have all won once this year, but that does not set them apart from the pack let alone each other - 19 stroke play tournaments on the PGA Tour this season have produced 19 different winners.
While Woods says he preferred the time when he was way out in front on his own at the top of the world rankings, Donald is enjoying the merry-go-round.
"I have no issues - I kind of enjoy the going back and forth," he said. "And I think the fans enjoy it.
"The last couple of months I think it probably has not been as exciting because Rory and I really haven't been playing in the same events."
They were together for The Masters at Augusta, but neither had a week to remember - and Woods did not get into contention either.
"I think that will change a little bit and hopefully there will be some situations coming up in the next few months where we'll be playing in the same tournament and both having a chance to win.
"That's more exciting I think."
Two weeks ago McIlroy was on a week off when Donald grabbed the spot back off the 23-year-old Northern Irishman by coming third in New Orleans.
Then, with Donald resting, McIlroy returned to number one last Sunday by being in a play-off for the Wells Fargo Championship at Quail Hollow.
Now the position is that Donald could take over again with a top-four finish this weekend - depending on where McIlroy finishes, of course - and Westwood could leapfrog them both by winning if Donald is not runner-up and McIlroy is outside the top five.
