NEW YORK (AFP/REUTERS) - Thailand's Ariya Jutanugarn has seized the world No. 1 ranking from New Zealand's Lydia Ko with neither lifting a club in the LPGA ShopRite Classic - where Ryu So Yeon missed the cut on Saturday to cement the shift.

Ryu, ranked third in the world, had a chance to leapfrog Ariya by finishing third or better in the tournament in Galloway, New Jersey.

But she fired back-to-back rounds of three-over 74 to miss the second-round cut in the 54-hole tournament, where South Korea's Kim In Kyung and American Paula Creamer shared the 36-hole lead after carding identical four-under 67s.

At nine-under 133, Kim and Creamer will head into the final round on Sunday two clear of Swede Anna Nordqvist, Ariya's sister Moriya and South Korean Lee Jeong Eun.

First-round leader Nordqvist battled to an even-par 71, Moriya had a 70 and Lee the same.

Ko will slip from the summit after 84 straight weeks at the top. She's been ranked No. 1 for 103 weeks overall.

Ariya becomes the 10th player to reach No. 1 since the women's rankings were introduced in 2006 and the first from South-east Asia.