When Rory McIlroy lifted the PGA Championship's mighty Wanamaker Trophy in 2014, few would have guessed that a decade later he would have failed to add to his four Major titles.
Letting the US Open slip through his grasp at Pinehurst No.2 in June meant the wait for a fifth Major goes on - and if he doesn't win The Open at Troon it will be a full decade since his last triumph.
