Justin Rose capitalised on a final-round collapse from Dustin Johnson to secure victory at the WGC-HSBC Champions.
Round four leaders
-14 Justin Rose
-12 Brooks Koepka, Dustin Johnson, Henrik Stenson
-8 Peter Uihlein, Kyle Stanley, Rafael Cabrera-Bello
Scroll down for full collated scores
Round four report
Justin Rose capitalised on a final-round collapse from Dustin Johnson to secure victory at the WGC-HSBC Champions.
Rose began the final round 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.
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 Rory McIlroy down to ninth.
"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.
"I shot five under in tough conditions and he had to play good golf to keep it around par today, and obviously he made a few mistakes. It was really tricky out there and obviously I played one of the best back nines I've played in forever.
"To shoot 31 on the back to come through, I saved my best till last."
Rose's 10th European Tour title lifts him to third in the Race to Dubai with three events remaining, albeit still more than a million points behind leader Tommy Fleetwood, who finished in a tie for 20th after a closing 74.
"It kind of gives me a realistic chance now, if I was to have a special end to the season with Turkey and Dubai," added Rose, who topped the money list in 2007.
Johnson, who won at Sheshan International in 2013, had recorded 22 birdies in the first three rounds but failed to manage a single one on Sunday.
The former US Open champion bogeyed the first two holes and dropped further shots on the 12th, 15th and 16th to join Greg Norman, Sergio Garcia and Spencer Levin as the only men since 1996 to lead a PGA Tour event by six shots with a round to play and fail to win.
"It was tough conditions today and I felt like I actually drove it pretty well, other than the drive on two," Johnson said.
"Even making the turn I'm two over, which is fine. I know I've got to just play solid on the back nine. I didn't make any putts. I felt like I rolled it good. Just nothing was going in the hole.
"I hit a couple of really bad iron shots. That was probably the key there on 14. I just chunked it. Same thing on 15, I just chunked it. That cost me two shots there.
"And then bogeying 16, that's just bad. So I just gave a few away."
Collated round four scores and totals
(USA unless stated, par 72)
274 Justin Rose (Eng) 67 68 72 67
276 Brooks Koepka 64 68 73 71, Dustin Johnson 68 63 68 77, Henrik Stenson (Swe) 68 69 69 70
280 Peter Uihlein 72 67 69 72, Kyle Stanley 71 68 69 72, Rafael Cabrera-Bello (Spa) 68 70 70 72
281 Brian Harman 68 69 70 74
282 Bernd Wiesberger (Aut) 71 70 70 71, Matthew Fitzpatrick (Eng) 68 69 72 73
283 Tony Finau 67 72 74 70, Jason Day (Aus) 69 74 72 68, Tyrrell Hatton (Eng) 68 70 71 74, Paul Casey (Eng) 71 72 69 71
284 Phil Mickelson 71 72 74 67, Branden Grace (Rsa) 74 69 72 69, Patrick Cantlay 68 74 69 73, Charles Howell III 72 67 71 74, Daisuke Kataoka (Jpn) 71 72 69 72
285 Tommy Fleetwood (Eng) 71 70 70 74, Ashun Wu (Chn) 67 72 73 73, Jhonattan Vegas (Ven) 70 73 72 70, Hideto Tanihara (Jpn) 72 70 74 69
286 Daniel Berger 68 71 75 72, Kiradech Aphibarnrat (Tha) 65 70 75 76, Pat Perez 72 69 76 69, Poom Saksansin (Tha) 73 70 68 75, Matthew Southgate (Eng) 68 71 74 73, Hyun-woo Ryu (Kor) 69 73 69 75, Chez Reavie 69 74 71 72
287 Alexander Levy (Fra) 71 71 71 74, S.S.P Chawrasia (Ind) 72 70 73 72, Alex Noren (Swe) 72 72 72 71, Thorbjorn Olesen (Den) 72 73 69 73, Matt Kuchar 67 70 72 78
288 Russell Henley 75 68 76 69, Jon Rahm (Spa) 72 74 69 73
289 Paul Dunne (Ire) 67 73 70 79, Haydn Porteous (Rsa) 66 74 74 75, Marc Leishman (Aus) 71 79 68 71, Gavin Green (Mal) 65 74 73 77, Wen-chong Liang (Chn) 72 70 73 74, Richard Sterne (Rsa) 73 72 76 68
290 Richie Ramsay (Sco) 73 71 75 71, Xinjun Zhang (Chn) 71 77 71 71
291 Francesco Molinari (Ita) 77 71 72 71, Phachara Khongwatmai (Th) 69 78 70 74, Xander Schauffele 71 75 74 71, Ryan Fox (Nzl) 71 69 75 76
292 Haotong Li (Chn) 72 76 71 73, Hideki Matsuyama (Jpn) 74 74 72 72, Hudson Swafford 70 74 75 73, Adam Scott (Aus) 72 72 74 74, Charl Schwartzel (Rsa) 73 70 73 76, Lucas Glover 71 75 76 70, Fabrizio Zanotti (Par) 73 71 71 77, Patrick Reed 66 70 82 74
293 Chan Kim 69 72 72 80, Ross Fisher (Eng) 77 70 73 73, David Lipsky 69 70 72 82, Jordan Smith (Eng) 69 73 74 77
294 Scott Hend (Aus) 71 68 78 77, Bill Haas 71 73 76 74, Wesley Bryan 77 72 71 74
295 Michael Hendry (Nzl) 73 75 71 76, Adam Hadwin (Can) 69 74 79 73
296 Mike Lorenzo-Vera (Fra) 71 71 77 77, Matthew Griffin (Aus) 68 77 74 77
297 Zecheng Dou (Chn) 71 76 75 75, Si Woo Kim (Kor) 71 71 79 76
299 Graeme Storm (Eng) 75 74 75 75, Thomas Pieters (Bel) 75 79 69 76
300 Yan-wei Liu (Chn) 72 73 77 78
301 Ashley Hall (Aus) 74 71 80 76
304 Andrew Dodt (Aus) 74 79 74 77
308 Brandon Stone (Rsa) 78 87 68 75
311 Yi Cao (Chn) 74 83 79 75
Round three report
World number one Dustin Johnson is on the verge of making history after opening up a six-shot lead in the WGC-HSBC Champions event in Shanghai.
Johnson carded an eventful third round of 68 at Sheshan International to finish 17 under par, with nearest rival and good friend Brooks Koepka collapsing to a 73 after a brilliant start.
Former Open champion Henrik Stenson is seven shots off the pace after a 69, with Olympic champion Justin Rose and Brian Harman a stroke further back on nine under.
Victory for Johnson - Sky Bet's 1/16 favourite - on Sunday would make him the first player to win three World Golf Championship events in the same year after he won the WGC-Dell Technologies Match Play and WGC-Mexico Championship on back-to-back starts in March.
"These are big events, some of our biggest events we have on tour and obviously the best players in the world are here," Johnson said.
"It's golf tournaments that I obviously always want to put myself in position to win, which I'm in a good position going into tomorrow. But I'm still going to have to go out and play a really solid round if I want to get it done."
Johnson began the day with a one-shot lead, but bogeyed the first and saw Florida neighbour Koepka start with three straight birdies to move two shots in front.
However, Johnson birdied the fourth and seventh to get back on level terms before a decisive swing on the eighth, where Johnson picked up another shot and US Open champion Koepka lost a ball in the trees and ran up a triple-bogey eight.
It was Johnson's turn to find trouble on the 10th when he needed two attempts to get out of the bushes on his way to a double-bogey six, but the damage was limited by Koepka also dropping a shot.
Three birdies in the next six holes then saw Johnson stretch his lead and remain firmly on course to repeat his victory of 2013.
Koepka, whose unhappy day was completed with a bogey on the 18th, said: "There were five holes that were just a disaster there from eight to 12. Nine was all right but 10, to put that wedge shot in the bunker was pretty poor, especially when you've got so much room.
"The start was really good. The first seven holes I thought was pretty solid and the rest of it very up and down."
Stenson's 69 was his third sub-70 round of the week, but the world number nine admitted he would have his work cut out to catch Johnson on Sunday.
"My game plan is going to be the same," Stenson said. "I've got a game plan how to play my best, or what I think is my best on this golf course and I'm going to stick to that. It's been working pretty good so far.
"But if Dustin keeps on playing the way that he's done this week, I think it's going to be a one-man show tomorrow. But you never know, tough winds, and this golf course has a couple of holes where you certainly can have a number. It's never over until it's over."
Round two report
A new putter helped world number one Dustin Johnson produce a stunning burst of scoring to claim the halfway lead in the WGC-HSBC Champions in Shanghai and he is Sky Bet's new 5/6 tournament favourite.
Johnson birdied six of the last seven holes at Sheshan International in a brilliant, bogey-free 63 to reach 13 under par, a shot ahead of first-round leader Brooks Koepka, who is 3/1 second favourite.
Koepka also kept a bogey off his card as he added a 68 to his opening 64, leaving the US Open champion three clear of Olympic gold medallist Justin Rose (10/1) and Thailand's Kiradech Aphibarnrat (22/1).
A victory for Johnson on Sunday would make him the first player to win three World Golf Championship events in the same year after he won the WGC-Dell Technologies Match Play and WGC-Mexico Championship on back-to-back starts in March.
"Obviously I played very well," Johnson told reporters after covering the back nine in 29. "But I actually got a putter like about 20 minutes before I teed off. It's a (TaylorMade) Spider, so it's one that I've used before.
"I wasn't really pleased with the one I played with (on Thursday), so the guys here in China made me one. I got it right before I walked to the tee. I hit a few putts on the practice green with it and I was like, 'Oh, this will work pretty well'.
"I went out and holed a lot of putts, so I kind of like it."
Johnson also clearly likes the course at Sheshan International, where his 24-under-par winning total in 2013 included a second round of 63.
"It suits my eye very well," the 33-year-old added. "For me, if I drive it good out here, I feel like I can make a lot of birdies.
"I can reach all the par fives if I drive it in the fairway. The rest of the holes, I feel like if I'm in the fairway, I can attack the golf course.
"It's always important to get a win no matter what time of year it is. For me, it's kind of the end of the year but it's also the start of the 2018 (PGA Tour) season. It would be really nice to get off to a good start."
Johnson and Koepka are good friends and neighbours in Florida, although most of their time together is spent relaxing or in the gym, rather than on the course.
"It will be fun, nice to play with him," Koepka said. "We actually talked about it on Saturday when we played at home. I don't think we've ever actually been in contention together."
Rose was disappointed to bogey the par-five 18th in his 68, but was pleased with his overall performance as he continues to struggle with a shoulder problem.
"It's nothing major, just a tiny bit of tendonitis," the world number 13 said. "It's not impeding my golf.
"It was a disappointing way to finish. I felt like I was running out of steam a little bit coming in, but it's my first tournament in a month or so, so to back up a good start with another good round is good and now I feel like I'm into the weekend, which is where you want to be."
Round one report
US Open champion Brooks Koepka felt "destiny" was on his side after firing an eventful 64 to claim the lead in the WGC-HSBC Champions in Shanghai.
Koepka carded seven birdies, an eagle and a solitary bogey at Sheshan International to finish eight under par, a shot ahead of Thailand's Kiradech Aphibarnrat and Malaysia's Gavin Green.
Patrick Reed and South Africa's Haydn Porteous were two shots off the pace on six under, with Justin Rose and Ireland's Paul Dunne part of a five-strong group on five under.
Koepka began his round on the back nine and birdied the 14th, 16th and 17th before holing from 20 feet for eagle on the par-five 18th to reach the turn in 31.
The 27-year-old also birdied the first before three-putting the third, but bounced back to pick up shots on the fourth, seventh and eighth, the latter coming in unlikely fashion.
"It was an interesting hole to say the least," Koepka said after his round. "It was an awful 3-iron (off the tee), hit it in the water and was lucky enough or fortunate enough to at least be able to hit it and advance it.
"And then to hit 3-wood in there to 15 feet and then make the putt, we were laughing. It was almost kind of like destiny to make that putt for how lucky we were that whole hole."
Koepka, whose shirt bore the evidence of his escape from the muddy water, added: "I thought we played really well. Putted very well. One little hiccup and three-putted from about four feet.
"I felt like I started really well. Drove it really well. Any time you're making putts and you're keeping it in the fairway, you're going to shoot good (scores)."
Green, who won the Taiwan Masters on the Asian Tour at the start of the month, carded seven birdies in a bogey-free round, while Aphibarnrat recorded 10 birdies and three bogeys.
"It's my first time here and it's obviously my first WGC," Green said. "The last couple of weeks, playing on the PGA TOUR, it's a big difference for me. It takes a little getting used to.
"It's changed me a little bit. I've been trying to push for it, obviously, and it's not coming out the way I wanted to.
"So I'm taking a different approach this time and am just going to try and enjoy my first WGC. Dad's on the bag, so we're just going to enjoy it and sticking to the game plan. If things get out of hand, we try to get back in play and we try to wedge it close."
Dunne is also playing his first World Golf Championships event in the wake of claiming his maiden European Tour title in the British Masters earlier this month.
The 24-year-old, who came to prominence when sharing the 54-hole lead in the 2015 Open while still an amateur, carded six birdies and a solitary bogey on the 17th, where he three-putted from close range.
England's Tyrrell Hatton, who is seeking a hat-trick of victories after winning the Dunhill Links and Italian Open, is four shots off the pace after a 68 matched by compatriots Matt Fitzpatrick and Matthew Southgate and world number one Dustin Johnson.
Race to Dubai leader Tommy Fleetwood carded an opening 71, but defending champion Hideki Matusyama struggled to a two-over-par 74.
