• Northern Irishman shoots five under par 66 in first round
• ‘Not winning makes you want to win more,’ says Schauffele

If, by Rory McIlroy’s candid admission, this was a “scrappy” opening to his US PGA Championship then the remainder of the Valhalla field has cause to worry. A five under par 66 from McIlroy in Kentucky served as the latest indication he is close to ending an occasionally painful wait for a fifth major title that stretches back to 2014.

McIlroy’s caution was understandable. The 35-year-old’s putter kept his head above water before a three-hole stretch of birdies from the 5th, McIlroy’s 14th. The Northern Irishman chipped in at the 6th. The upshot was an inward half of 31, which leaves McIlroy four from Xander Schauffele, the first-round leader.

McIlroy prepares for US PGA Championship at Valhalla, where he won the tournament in 2014, after back-to-back wins

In normal circumstances, Rory McIlroy returning to a scene of triumph would be cause for deep reflection. McIlroy finished in darkness at Valhalla when claiming the US PGA Championship of 2014, in what provided a theatric backdrop to his fourth and hitherto last success in one of golf’s majors. McIlroy landed back in Louisville, Kentucky, this week with back-to-back PGA Tour wins to his name.

These are no ordinary times. A McIlroy media appearance on the eve of this US PGA lasted a mere nine minutes and seven questions from a packed floor. The appearance of news on Tuesday that 24 hours earlier the 35-year-old had filed for divorce from his wife of seven years has suddenly distorted the scene around McIlroy. On Sunday, McIlroy stood with trophy aloft at Quail Hollow after a dominant closing 18 holes.