Woods mounted a typical cost in an exciting ultimate spherical at Bellerive Nation however it was fellow American Koepka who saved his nerve within the face of relentless strain to carry him off by two photographs.
Australian Adam Scott, who drew stage with Koepka on the again 9, completed third, an additional stroke behind.
Woods noticed his possibilities lastly recede when he may solely make par on the lengthy 17th after discovering hassle off the tee whereas Koepka was reeling off successive birdies on the 15th and 16th to tug clear within the three-way battle for the Wanamaker Trophy.
To huge roars from the gallery, Woods birdied the ultimate gap to finish a ultimate spherical 64 for 14-under 266, affirmation that he has returned to his close to finest after years of setbacks and most just lately accidents which threatened his profession.
Koepka’s triumph comes arduous on the heels of his profitable protection of the US Open title in June, with a ultimate spherical 66 leaving him on 16-under 264 as he claimed his third main in two years to hitch the very elite of world golf.
He matches legends Gene Sarazen, Ben Hogan, Jack Nicklaus and Woods, the final man to realize the feat in 2000, in successful the US Open and PGA Championship in the identical 12 months.
“It is thoughts boggling,” mentioned the 28-year-old.
“The group undoubtedly let you already know what is going on on. Firstly of the again 9 I may hear the roars when Tiger began making his run after which Scotty (Adam Scott) makes his little run.”
Woods, who began the event of the season with a bogey and double bogey, confirmed his preventing qualities all through, carding his finest ultimate spherical in a serious regardless of discovering no fairways on the entrance 9.
“I did not drive the ball nicely all day,” he mentioned. “I used to be hitting it left and proper on the driving vary, even with my sand wedge, so I knew it was going to be a battle to piece the spherical collectively, however I did.”
Woods, who additionally challenged strongly within the British Open in July, is prone to be rewarded with a spot within the US Ryder Cup workforce when captain Jim Furyk names his wildcards for the match towards Europe in France subsequent month, Koepka heading the eight who’ve already gained automated spots after the PGA Championship.
Behind the three frontrunners, Spain’s Jon Rahm and Stewart Cink completed tied for fourth on 11-under, whereas defending champion Justin Thomas light to complete a shot additional again with British Open winner Francesco Molinari, Thomas Pieters and midway chief Gary Woodland.
Spain’s Rafael Cabrera Bello and Tyrrell Hatton of England carded joint better of the day 64s with Woods to shut on nine- beneath, giving early discover of a low scoring day.
Rickie Fowler, the chief on an emotional first day as gamers remembered Australian golfer Jarrod Lyle, who died of most cancers aged 36, once more faltered in his problem for a serious to shut in a gaggle on eight-under, which included Jordan Spieth.
One other to disappoint was Northern Eire’s Rory McIlroy, who completed again on two-under, stretching his drought within the majors to 4 years. McIlroy, who received at Bay Hill on the PGA Tour earlier this season, was anticipated to problem at Bellerive, however after his ultimate spherical 70 gave a downbeat evaluation of his kind.
“My swing hasn’t been the place I would like it to be,” he admitted. “It is form of regressed because the season has gone on.”