Brooks Koepka defended his title at the PGA Championship to return to World No 1 in the Official World Golf Rankings.
Koepka captured his fourth Major in two years with victory on an extremely difficult day at Bethpage Black to move from third to first in the latest rankings.
In the process, he becomes the first player to hold back-to-back titles in two Majors at the same time, winning two straight US Opens and now two consecutive PGA Championships.
Dustin Johnson, who laid down a back-nine charge before fizzling out himself with two late bogeys, drops to second with Justin Rose down to third.
The rest of the top 10 remains unchanged, with the next big move coming from Patrick Cantlay, who rises three places to 14th.
Louis Oosthuizen missed out on a chance to bank some serious ranking points as he slid down nearly 40 places on Sunday after a 79. The consolation of that poor day out was a rise in the ranking, albeit by one place to pass Patrick Reed.
Despite finishing one spot higher than his countryman, Justin Harding dropped three places to 45th in the rankings, but crucially doing enough to book his place at next month’s US Open.
Branden Grace dropped one place to 49th after missing the weekend in New York.
There was some joy lower down the rankings with Erik van Rooyen, SA’s top player this week, breaking into the top 100. While his first win continues to elude him, the 29-year-old is now 89th in the world after starting last week in 106th place.
Dylan Frittelli is the last South African inside the top 100; he too, missed the weekend, but only dropped one place to 97th.