Men's rankings

                                       
Men's ATP tour rankings 
21 December 
  1 R Federer Swi    11 F Gonzalez Chi 
  2 R Nadal Spa      12 R Stepanek Cze 
  3 N Djokovic Ser   13 G Monfils Fra 
  4 A Murray GB      14 M Cilic Cro 
  5 JM Del Potro Arg 15 G Simon Fra 
  6 N Davydenko Rus  16 T Robredo Spa 
  7 A Roddick US     17 D Ferrer Spa 
  8 R Soderling Swe  18 T Haas Ger 
  9 F Verdasco Spa   19 M Youzhny Rus 
 10 J-W Tsonga Fra   20 T Berdych Cze 

Other British players: 
164 A Bogdanovic   313 J Baker 
261 D Evans        429 D Smethurst 
271 J Ward         431 M Phillips 
307 J Goodall      471 D Cox 

                                       
Women's WTA tour rankings 
21 December 
  1 S Williams US    11 M Bartoli Fra 
  2 D Safina Rus     12 F Pennetta Ita 
  3 S Kuznetsova Rus 13 S Stosur Aus 
  4 C Wozniacki Den  14 M Sharapova Rus 
  5 E Dementieva Rus 15 N Li Chn 
  6 V Williams US    16 Y Wickmayer Bel 
  7 V Azarenka Blr   17 F Schiavone Ita 
  8 J Jankovic Ser   18 K Clijsters Bel 
  9 V Zvonareva Rus  19 V Razzano Fra 
 10 A Radwanska Pol  20 N Petrova Rus 
                      
British players: 
 84 E Baltacha     204 N Cavaday 
 88 K O'Brien      263 G Stoop 
100 A Keothavong   300 N Broady 
189 M South        334 J Curtis