World No.1 Lydia Ko has followed in Danny Lee's footsteps in winning the US Amateur.

The 15-year-old from the Gulf Harbour Country Club was impressive in the 36 hole final to defeat American Jaye Marie Green by 3 and 1 at The Country Club.

Ko, who was never behind in the match, was 1up after 18 holes this morning before turning on a master-class when it mattered most in the final 18 holes.

The New Zealand rep produced one of the shots of the tournament - an eagle two on the par four sixth - to get to 2up. She followed that up with consecutive birdies and claimed a 4up lead and the advantage in the championship match.