Irish amateur Leona Maguire’s shot a final round three under to finish 18 shots behind eventual Evian Championship winner Lydia Ko.
New Zealnder Ko shot a stunning eight under par 63 to become the youngest ever winner of a major at the Evian Championship in France on Sunday.
At the age of 18 years, four months and 20 days she picked up eight birdies in a flawless final round to win by six shots on 16 under par.
American Lexi Thompson was second on ten under after signing for a 70, with China's Shanshan Feng third on eight under.
Overnight leader Lee Mi-hyang finished in a tie for fourth, with fellow South Korean Lee Ilhee, after a three-over-par 74.
American Morgan Pressel, the previous youngest major winner, had been joint third at the start of play but saw her chances end as she made six bogeys in a round of 75, finishing four under.
World number one Inbee Park ended 11 shots off the victory total on five under.
Maguire finished on two over, with her three under on Sunday her first round under par following 72, 73 and 73 seeing her to a tied 34th finish.
Ko, the world number two, made a steady start to her final round with a birdie at the third and then started to gather momentum after picking up further shots at the seventh and ninth.
Five more birdies came on the back nine as she powered to victory.
