New Zealand's Lydia Ko has moved one spot up the women's world golf rankings after a top 20 finish in Thailand on Sunday.

The 15-year-old, who was playing in Thailand after winning the ISPS Handa NZ Women's Open and finishing third at the Australian Open in consecutive weeks, had another fine week with a 14th placing at the Siam Country Club in Chonburi.

The world's top amateur now sits in 25th spot in the rankings.

Taiwan's Yani Tseng remains the number one ranked player in the world.

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- nzherald.co.nz