With her victory Sunday at the Ricoh Women's British Open, Ariya Jutanugarn vaulted four spots to No. 2 in the new release of the Rolex Women's World Rankings.
Henderson dropped a spot to No. 3, Thompson stayed at No. 4 and Park dropped two spots to No. 5.
The top four players in the world rankings have never been younger. Ko is 19 years old, Jutanugarn is 20, Henderson is 18 and Thompson 21.
Jutanugarn was No. 124 at season's start a year ago.
Jutanugarn's victory was her fourth LPGA title this season, equaling Ko for most on tour, but Ko maintains a healthy margin as world No. 1. Here are the average world rankings points for the top four players: Ko, 14.82; Jutanugarn, 8.25; Henderson, 8.08; Thompson, 7.69.