Tiger Woods is on course to finish on top of the US PGA money list for the fifth straight year.
Victory at the American Express Championship saw Woods overtake Vijay Singh at the top of the rankings.
"If Vijay would have won the tournament it would have been very difficult for me to win the money title, as well as player of the year," Woods said.
"But right now it's still up for grabs," he added.
Woods started the Atlanta tournament $475,000 behind Singh, but finished it $170,000 better off than his closest rival.
If he can hold on to that advantage Woods will become the first man to win the money title five years in a row.
He could also become the first player to land the prestigious PGA Player of the Year title for a fifth consecutive year.
"To win against this field, on this golf course with a Major-type set-up, it will have a lot of weight to it," David Toms said in regard to his compatriot's chances of winning the PGA Tour Player of the Year award.
The world number one never trailed in the final round at the Crabapple course, but was forced to work hard to defend his lead from the chasing pack.
He finished six-under par after a closing round two-over 72, two shots clear of Singh, Tim Herron and Stuart Appleby.
US PGA MONEY LIST (TOP 5)
Tiger Woods (US) - $6,278,746
Vijay Singh (Fiji) - $6,107,507
Davis Love (US) - $5,541,096
Jim Furyk (US) - $4,815,355
Mike Weir (Can) - $4,716,410
"Any time you get to play against the best players is when it's most challenging," Woods reflected.
"It's not a watered-down field. That's what makes it so difficult to try and win these tournaments."
The victory saw him surpass Arnold Palmer, Tom Watson and Ben Hogan in becoming the first man to win at least five titles in five consecutive seasons.
Woods has two scheduled tournaments left to play this season, the Disney FUNAI Classic and the season-ending Tour Championship.