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LONDON : Malaysia's Nicol David has completed a full unbroken year as world number one, according to the new July Women's World Squash Rankings published on Tuesday.

The 23-year-old from Penang first topped the list in January 2006, then began an uninterrupted year from August last year - since when she has won seven World Tour titles, including successful defences of her British Open and World Open crowns.

In an unchanged top 20 listing, Australia's Natalie Grinham is at No 2, ahead of older sister Rachael Grinham at three, England's Tania Bailey at four, and Natalie Grainger of the United States at number five.