Reached world No.1 in 2018 after a magnificent seven victories in two years, including his first major at the previous season’s PGA Championship, where he fought back from six behind after day one to win by two.
A runner-up finish at the Tour Championship a month later made him the $10million winner of the FedEx Cup play-off series and the year also saw him become the youngest player in Tour history to break 60, achieving it with an eagle on the final hole of his opening round at the Sony Open, where he went on to win by seven.
A 63 at the US Open, completed with another eagle, equalled the then-major record and was the first nine-under-par round in the event’s history.
Then achieved his first World Golf Championship success at the 2018 Bridgestone Invitational, having finished second and fourth in the two previous events in the series.
First made a PGA Tour halfway cut at 16, captured the Jack Nicklaus Award as America’s top college player and made his Ryder Cup debut in September, top-scoring for Jim Furyk’s well-beaten side with four wins out of five, including the top singles over Rory McIlroy.