David maintains a healthy lead ahead of Australian rival Natalie Grinham, the world No2 - while Natalie's older sister Rachael Grinham, who beat the Malaysian in last month's final of the Dunlop British Open, has strengthened her hold on third place.
Whilst England's Tania Bailey and Vicky Botwright remain in fourth and sixth place, respectively, in the latest list, compatriot Laura Lengthorn-Massaro returns to the top ten at 10 after retaining her title in the Wolverhampton Open last month.
Meanwhile, Hong Kong's Rebecca Chiu rises two places to record a career-high 13th place in the October rankings. The 28-year-old former Asian Games champion enjoyed a highly successful month in September - winning the Crocodile Challenge Cup and NSC Tour 10 No1 to bring her WISPA World Tour title tally to 13.
Victory in last week's Icelandair Group Classic, the maiden event in the new WISPA Premiere Series, sees England's Dominique Lloyd-Walter return to the top 20 after an eight-month gap.
1  Nicol David MAS
2  Natalie Grinham AUS
3  Rachael Grinham AUS
4  Tania Bailey ENG
5  Natalie Grainger USA
6  Vicky Botwright ENG
7  Omneya Abdel Kawy EGY
8  Madeline Perry IRL
9  Vanessa Atkinson NED
10  Laura Lengthorn-Massaro ENG
11  Shelley Kitchen NZL
12  Jenny Duncalf ENG
13  Rebecca Chiu HKG
14  Alison Waters ENG
15  Engy Kheirallah EGY
16  Kasey Brown AUS
17  Annelize Naude NED
18  Sharon Wee MAS
19  Dominique Lloyd-Walter ENG
20  Isabelle Stoehr FRA
For the complete WISPA ranking list, see www.wispa.net
Issued by Howard Harding on behalf of WISPA
Women’s International Squash Players' Association
Tel: (+44) 1737-243333; Mobile: (+44) 7773-325130; Email: HowHard@aol.com
WISPA: Tel: (+44) 20 7222 1667; Email: email@example.com
WSQ 4109 3 October 2007