It comes after a t-43 finish in last weekend's US Open.
US Open Champion Bryson DeChambeau has climbed to 5th in golf's latest world rankings.
The American finished six shots clear of the rest of the field at Winged Foot in New York - and was the only player under par for the week.
Offaly's Shane Lowry finished up in a tie for 43rd, 13 over par for the tournament, dropping him one place from 29th to 30th.
Rory McIlroy remains fourth in the rankings.
The Open Champion will now return to Europe for the first time this season to play in the Irish Open at Galgorm Castle this weekend.