Still just 25, Rory McIlroy's victory in the US PGA Championship at Valhalla was his fourth major title and made him the first player to win back-to-back majors since Pádraig Harrington in 2008.
McIlroy has finally emerged as golf's heir to Tiger Woods and with talent - and time - on his side, there is every chance he could join Woods, Jack Nicklaus in the upper echelons of golf's immortals.