Jimmy Walker has climbed 33 places to 15th in the world rankings after his US PGA Championship victory. The American, 37, held off Jason Day at Baltusrol, New Jersey, on Sunday to claim his first major.

Australian Day, 28, remains top of the rankings, followed by Americans Dustin Johnson and Jordan Spieth, and Northern Ireland’s Rory McIlroy. Walker’s career-high ranking of 10th came in April 2015 after he won the Valero Texas Open in San Antonio.

As for Walker’s PGA triumph, he took struggled to believe his accomplishment afterward, having missed the cut at the previous two majors in 2016.

“It’s surreal. I mean, it really is,” he told reporters. “I would have said it would have happened the last couple years, the way I was playing. I just had not quite played as well as I would have liked to this year but I knew it was close. I felt some things were clicking last week.”