Despite Jason Day's US PGA Championship breakthrough, Jordan Spieth is the new world number one - dethroning Rory McIlroy.
Jordan Spieth's consolation prize for being beaten to the US PGA Championship by Jason Day was being rewarded the world number one ranking.
After incumbent Rory McIlroy finished outright 17th at Whistling Straits, Spieth's equation was simple - finish at least tied for second with only one other player, and the number one ranking was his.
Spieth went on to finish two clear of third-placed Branden Grace, and three behind Day - well and truly enough to rise to the peak of men's golf.
"It feels really good," Spieth told host broadcaster CBS Sports.
"It's an unbelievable feeling, I knew when we were walking up to 18 green, by that time I'd accepted that Jason was gonna win, and I knew two putts in, and we had that goal.
"That's incredible - so much work has been put in since we turn professional. What a year it's been."