Ko up to 30th in women's world rankings

Lydia Ko won her third professional event on Sunday at the ISPS Handa NZ Women's Open and moved up eight spots to No. 30 in this week's women's world rankings.

The 15-year-old amateur became the youngest player ever to win on the Ladies European Tour, and was the youngest winner in LPGA Tour history last year at the Canadian Women's Open.

Yani Tseng is still No. 1 and was followed again by Na Yeon Choi, Stacy Lewis, Inbee Park and Shanshan Feng.

So Yeon Ryu and Suzann Pettersen exchanged positions with Ryu up to sixth and Pettersen dipping one to seventh. Jiyai Shin stayed put at No. 8 and was trailed by Ai Miyazato and Mika Miyazato, who are no relation.

Cristie Kerr remained No. 11 and the rest of the top 20 was unchanged with Karrie Webb followed by Paula Creamer, Catriona Matthew, Sun Ju Ahn, Azahara Munoz, Amy Yang, Brittany Lincicome, Angela Stanford and Chie Arimura.

Amelia Lewis, who was runner-up to Ko, soared 95 spots to No. 196, while Stacey Keating jumped 20 places to 87th after finishing third in New Zealand.