Finally made his Major breakthrough in 2015, winning the US PGA Championship by three shots from Jordan Spieth at Whistling Straits. Had endured numerous near-misses before that, finishing in the top four no fewer than six times since 2011. His victory was all the more remarkable given the severe vertigo from an ear infection he suffered a few months earlier. Collapsed in the second round at Chambers Bay but battled on to finish tied ninth. Followed the PGA Championship win with two more victories in his next three events – The Barclays and the BMW Championship – the latter elevating him to World Number One for the first time. Won his maiden European Tour title in the 2014 WGC-Accenture Match Play Championship after edging out Victor Dubuisson in a high-quality final at Dove Mountain. It took a sudden death play-off to separate the pair, but Day eventually prevailed with a birdie on the 23rd hole. Gained his debut US PGA Tour title in the 2010 HP Byron Nelson Championship and became a World Cup winner in 2013 when, alongside fellow Australian Adam Scott, he took both the team and individual honours in the ISPS HANDA World Cup. Was introduced to golf by his father, Alvin, who died when he was 12. Three years later his mother, Dening, encouraged him to attend a golf academy in Australia’s Gold Coast, where he borrowed a book on Tiger Woods from his room-mate. It had a huge impact on Day, who said: “That book influenced my life dramatically. Tiger is the main reason I started practising harder. He’s the main reason I started playing professionally. If it wasn’t for him, I wouldn’t be playing golf today."