Rory McIlroy drops to worst World Golf Ranking in over three years
And where are the other Northern Irishmen in the list?
Rory McIlroy World Golf Ranking is at its lowest ebb since May 2014.
He's down three places to ninth as his 2017 season has been hampered by injury.
The drops comes after Justin Rose produced a brilliant finish to take advantage of a stunning collapse from world number one Dustin Johnson and win the WGC-HSBC Champions in Shanghai.
Rose's second WGC title lifts him from 13th in the world to sixth, with Koepka and Stenson now seventh and eighth respectively, pushing the absent McIlroy down to ninth.
Fellow Northern Irishman Graeme McDowell dropped five places to 162nd in the World, Michael Hoey is down to 602nd, just ahead of Jonathan Caldwell in 617th. Dermot McElroy is 837th with Cormac Sharvin at 1,115th and Darren Clarke out at 1,256th.
World number one Johnson is ahead of second placed Jordan Spieth, Justin Thomas in third, Hideki Matsuyama, Jon Rahm, Rose, Koepka, Stenson, McIlroy and Rickie Fowler completing the top ten.
Rose began the final round in Shanghai eight shots behind Johnson and was still six adrift at the turn, but fired five birdies in a back nine of 31 to complete a closing 67, with Johnson slumping to a 77.
At 14 under par, Rose finished two shots ahead of Ryder Cup partner Henrik Stenson, Brooks Koepka and Johnson, who had started the day with a six-shot lead in pursuit of a record third World Golf Championship victory this year.
"It's unbelievable," said Rose, whose chances looked to have disappeared when he bogeyed the eighth and ninth to reach the turn in level par.
"It's been a long time since I've won, or at least it feels like that. I've won every year since 2010, if you include the Olympics last year. I've left it late this year but it feels amazing.
"Obviously we all know the position DJ was in and I think today was the kind of day that the leader probably didn't want. You want a six-shot lead any time, but this is the kind of day where that kind of swing is possible.
"To shoot 31 on the back to come through, I saved my best till last."