World No. 1 Lydia Ko has won the 2015 ISPS Handa Women's Australian Open.
It is the 17-year-old Ko's first victory as the No. 1-ranked player.
The New Zealander is also the youngest-ever Open winner in tournament history.
Ko, who began the day in a share of the lead, held her nerve to card a two-under par 71 on the day and complete the tournament at nine-under par.
She won by two shots from South Korea's Amy Yang at seven-under.