Lydia Ko's been toppled off the LPGA's season points standings.

A week off has cost the Kiwi the lead, with Thailand's Ariya Jutanugarn leapfrogging the world number one with a sixth place finish at the Reignwood Classic.

Jutanugarn is now four points clear in the Rolex Player of the Year standings, though Ko can reclaim her lead when she defends her title at Taiwan Championship this weekend.