Jon Rahm won the DP World Tour Championship with England’s Tommy Fleetwood picking up the Race to Dubai.
Justin Rose looked to have wrapped up the tournament and the Order of Merit after the opening nine in Dubai thanks to a commanding lead, but three bogeys coming home saw him slip out of contention.
Spain’s Rahm posted five birdies and no bogeys in a round of 67, seeing him finish on -19, one stroke ahead of runner-up Kiradech Aphibarnrat.
"It's hard to sum it up," said Rahm. "An incredible week, I could not be more proud of what I've done this week. It could be very easy to just be content with getting the award and just being here and trying to play the best.
"Having the weekend that I've had, actually shooting 12 under on the last 36 holes, bogey-free round today, it's really special.
"I didn't plan on being here at the beginning of the year and I sure didn't plan on winning it so it's an incredible feeling.
Fleetwood signed for a 74 to finish in 21st for the event, enough for him to be crowned King of the European Tour in 2017. He had wins at the French Open and the Abu Dhabi HSBC Championship this term.
“Wentworth 2016 has always been the benchmark,” Fleetwood explained. “I turned up on the Thursday morning and I genuinely wanted to pull out because I didn’t think I could get it off the 1st tee. I was embarrassed how I was hitting it. I was scared of what I was going to do.
“My ultimate goal in life is to be the best player in the world. That will always be the same. Whether I achieve it or not is another thing but I’ll always strive for that.”
M2 2017 Driver / 10.5°/ Aldila Tour Green 75X
M1 2017 Fairway 15° / Aldila Tour Green 75X
M1 2017 Fairway 19° / Graphite Design Tour AD DI
P750 Irons / 4-PW / True Temper Project 6 6.5
Milled Grind wedges / 52° and 56° SB / True Temper Project X 6.5 &
Hi-Toe wedge / 60°/ True Temper Project X 6.5
Spider Tour Red Putter
TP5X Golf Ball
Driver: Titleist 917
Fairways: Nike Vapor 3 and 5
Irons: Nike Vapor Pro 9-5 iron, Nike Vapor Pro combo 4 iron
Wedges: Callaway Mac Daddy 48, 52, 56, 60
Putter: Odyssey 3
Ball: Titleist Pro V1x