While the relentless world number one reign of Nicol David moves into its 52nd successive month in the November Women's World Squash Rankings, her predecessor Vanessa Atkinson celebrates her highest ranking for more than two years in the new list published by the Women's International Squash Players' Association (WISPA).

Last month Nicol David claimed her first WISPA Tour title triumph in Mexico - but her success in the Torneo International Bicentenario Mexico, a new WISPA Gold event, took the Malaysian's career haul to 49 Tour titles and her unbeaten run this year to 34 matches.

But meanwhile, Dutch star Vanessa Atkinson is enjoying new lease of life in a distinguished career which kicked off in 1995. The former world champion first topped the world rankings in December 2005 before being toppled by Nicol David in August 2006.

And last month showed that the 34-year-old from The Hague still has much to offer: A sensational maiden title triumph in the METROsquash US Open in Chicago led to Atkinson celebrating her 40th Tour final appearance in the Monte Carlo Classic - and a leap to No8 in the new rankings, her highest position since October 2008.

England's Jenny Duncalf strengthens her position at No2 after successfully defending her title in last week's Carol Weymuller Open in New York.

But Australian Kasey Brown, who upset Duncalf earlier in the month en-route to a surprise semi-final berth in the Torneo International Bicentenario Mexico, celebrates a career-high world No7 in the new list.

New Zealander Jaclyn Hawkes also has cause for celebration after moving to a best-ever No12. The 27-year-old from Auckland, winner of her third Tour title at the Chairman's Cup in January, reached the quarter-finals of the Gold event in Mexico.

Low Wee Wern, the 20-year-old Malaysian who is the youngest player in the top 20, also rises to a career-best 16th place.

And New Zealander Joelle King makes a welcome return to the world top 20 - moving up a single place from 21 after celebrating her seventh Tour final appearance at last month's Crocodile Challenge Cup in Hong Kong.

November top 20 (inc. points average):

1

[1]

Nicol David

MAS

2982

2

[2]

Jenny Duncalf

ENG

1992

3

[3]

Alison Waters

ENG

1512

4

[4]

Omneya Abdel Kawy

EGY

1302

5

[5]

Rachael Grinham

AUS

1223

6

[6]

Madeline Perry

IRL

1092

7

[9]

Kasey Brown

AUS

829

8

[11]

Vanessa Atkinson

NED

773

9

[8]

Laura Massaro

ENG

769

10

[7]

Camille Serme

FRA

769

11

[10]

Raneem El Weleily

EGY

650

12

[13]

Jaclyn Hawkes

NZL

537

13

[14]

Samantha Teran

MEX

537

14

[12]

Engy Kheirallah

EGY

529

15

[15]

Annie Au

HKG

518

16

[17]

Low Wee Wern

MAS

468

17

[16]

Donna Urquhart

AUS

449

18

[18]

Isabelle Stoehr

FRA

405

19

[19]

Rebecca Chiu

HKG

390

20

[21]

Joelle King

NZL

374

For the complete WISPA ranking list, see www.wispa.net