Vertigo pushed Day to dizzying heights

Best images from Whistling Straits

Round four â€" Jason Day with his pregnant wife Ellie and son Dash after winning the 2015 PGA Championship.

Best images from Whistling Straits

Round four â€" The Australian poses with the Wanamaker trophy after claiming his first major title with a record score of 20 under par.

Best images from Whistling Straits

Round four â€" The tearful 27-year-old was congratulated by his longtime caddy and mentor Colin Swatton on the 18th green.

Best images from Whistling Straits

Round four â€" Day won by three shots from American Jordan Spieth, who became the new world No. 1 despite failing to win his third major title this year.

Best images from Whistling Straits

Round four â€" South Africa's Branden Grace celebrates with his caddy Zac Rasego after finishing third on 15 under -- his best result in a major, having tied for fourth at this year's U.S. Open.

Best images from Whistling Straits

Round four â€" Former U.S. Open champion Justin Rose, here reacting after a shot on the 15th hole, was fourth on 14 under.

Best images from Whistling Straits

Round three â€" Day reacts after sinking a put on day three of the 2015 PGA Championship. The Australian is two shots clear going into the final day.

Best images from Whistling Straits

Round three â€" Following close behind is Jordan Spieth who carded an impressive six birdies and three pars on the back nine Saturday.

Best images from Whistling Straits

Round three â€" Early afternoon leader Matt Jones faded as the day progressed to finish at 10-under-par.

Best images from Whistling Straits

Round three â€" A red-hot Martin Kaymer surged up the leaderboard to finish Saturday at 11-under-par.

Best images from Whistling Straits

Round three â€" Reigning PGA champion and world No.1 Rory McIlroy shot a third round of 71 to end Saturday tied for 17th position.

Best images from Whistling Straits

The silhouette of the ever popular Phil Mickelson who pleased the crowd with a strong round of 65 Saturday.

Best images from Whistling Straits

Round two â€" Matt Jones had taken the outright lead as the second round of the PGA Championships resumed Saturday morning after play was suspended Friday due to bad weather.

Best images from Whistling Straits

Round two â€" Jason Day was joint leader alongside Jones overnight but now lies in second position, two shots behind his fellow countryman.

Best images from Whistling Straits

Round two â€" There was no miracle turnaround for Tiger Woods who missed the cut by two shots upon conclusion of his second round Saturday.

Best images from Whistling Straits

Round two â€" On day two, John Daly carded 10 at the par-three seventh hole after hitting the water three times. He threw his club into the lake too.

Best images from Whistling Straits

Round two â€" Tiger Woods is battling to make the halfway cut, and has five holes to play when the second round is resumed Saturday morning.

Best images from Whistling Straits

Round two â€" World No. 1 Rory McIlroy was among those to have completed his second round before the bad weather hit on Friday. The defending champion carded a second successive 71 to earn a place in the weekend rounds.

Best images from Whistling Straits

Round two â€" McIlroy's playing partner Jordan Spieth was four shots better off after a 67 left the American tied for seventh as he bids to win his third major this year.

Best images from Whistling Straits

Round two â€" Japan's Hiroshi Iwata equaled the best score in a major, becoming the 27th man to shoot 63 as he moved up 108 places to 15th equal.

Best images from Whistling Straits

Round two â€" Sweden's David Lingmerth took hold of the lead early on day two after hitting a birdie at hole three and was the clubhouse leader on seven under after carding 70.

Best images from Whistling Straits

Round two â€" Phil Mickelson, the 2005 winner, faces a nervous wait after his 73 left him just inside the projected halfway cut.

Best images from Whistling Straits

Round two â€" Top-ranked Rory McIlroy plays his shot from the 10th tee on Friday at Whistling Straits.

Best images from Whistling Straits

Round two â€" Bae Sang-Moon of South Korea waits with his caddy on the second green on Friday.

Best images from Whistling Straits

Round two â€" Rich Beem of the United States watches a putt on the third green.

Best images from Whistling Straits

Round one â€" Dustin Johnson took an early lead on day one at the U.S. PGA Championship at the Whistling Straits course in Wisconsin, and by the end of the first round he held a one-stroke advantage.

Best images from Whistling Straits

Round one â€" A frustrated Tiger Woods was caught by TV microphones dropping the F-bomb as he ended the opening day three over par.

Best images from Whistling Straits

Round one â€" A surprise early challenger was David Lingmerth of Sweden who climbed to outright second.

Best images from Whistling Straits

Round one â€" Denmark's Thomas Bjorn started the day strongly and was joint leader with Johnson for a stage before fading.

Best images from Whistling Straits

Round one â€" There were concerns over world No. 1 Rory McIlroy's fitness before the tournament but the Northern Irishman was nimble enough to play out of the water on the fifth hole. He finished on one-under 71.

Best images from Whistling Straits

Round one â€" McIlroy's playing partner Jordan Spieth is searching for his third major in 2015 but started slowly at Whistling Straits, carding an opening 71.