On the face of it, it’s the classic tale of the sporting prodigy who burns twice as bright and half as long. Lydia Ko was the young golfer that achieved more as a adolescent than anyone in the history of the sport. She was already winning professional tournaments at the age of 14 and became world No. 1 at 17, four years younger than Tiger Woods did in the men’s game. Even now, with 15 LPGA Tour victories and two major titles under her belt, the New Zealander is still merely 21.