Howell, Hiroshi Iwata, Thongchai Jaidee, Miguel Ángel Jiménez, Søren Kjeldsen, Anirban Lahiri, Pablo Larrazábal, Alexander Lévy, Joost Luiten, George McNeill, Francesco Molinari, James Morrison, Koumei Oda, Eddie Pepperell, Richie Ramsay, Marcel Siem, Cameron Smith, Andy Sullivan, Danny Willett, Chris Wood Alex Norén was invited but did not play. Alternates (category 11) Martin Laird – took spot reserved for WGC-Bridgestone Invitational winner Sean O'Hair – replaced Graham DeLaet Carl Pettersson – replaced Gary Woodland Round summaries First round Thursday, August 13, 2015 Dustin Johnson recorded five birdies and an eagle and opened with a round of 66 (−6) for a one-stroke lead. This was the third consecutive major championship in which Johnson has held at least a share of the lead after the first round. David Lingmerth birdied five out of his first seven holes on the way to a round of 67 (−5) and is a stroke behind. Defending champion Rory McIlroy, playing his first tournament since the U.S. Open after an ankle injury, opened with a round of 71 (−1), as did Masters and U.S. Open champion Jordan Spieth. Second round Friday, August 14, 2015 Saturday, August 15, 2015 Play was suspended at 5:28 p.m. CDT due to thunderstorms with Jason Day and Matt Jones tied for the lead at nine-under par. David Lingmerth was the clubhouse leader at seven-under. Hiroshi Iwata tied a major championship record with a round of 63 (−9), the 27th time that had been achieved in a major and 13th time at the PGA Championship. Third round Saturday, August 15, 2015 Following the completion of the second round on Saturday morning, the third round began at 9:15 a.m. CDT. After a round of 66 (−6), which included eight birdies and an eagle to offset a double bogey at the 15th, Jason Day built a two-stroke lead after 54 holes. Day carried at least a share of the lead into the final round for the third consecutive major championship, the first since Phil Mickelson in 2006 to do so. Jordan Spieth birdied six out of his last eight holes for a bogey-free round of 65 (−7) to move into second place. Branden Grace had the low round of the day with a 64 (−8) and jumped from 28th at the start of the round to a tie for third. Final round Sunday, August 16, 2015 Jason Day set a major championship scoring record on the