Brooks Koepka eases to three-shot victory at WGC-FedEx St Jude Invitational

Koepka posted a five-under-par 65 on Sunday while McIlroy could only manage a one-over 71 to finish five back at 11 under par in a tie for fourth – the seventh time he has failed to break 70 in the final round of his 13 PGA Tour events so far this season