Djokovic stays on top

Berlin - Japan's Kei Nishikori is up to a career-best sixth in the ATP world rankings following his tournament win in Tokyo on Sunday.

That victory came on the back of his win in Kuala Lumpur the week before and just a month after he reached the final of the US Open.

Novak Djokovic, who successfully defended his title in Beijing on Sunday, maintained a comfortable advance atop the rankings with his nearest challenger, Rafael Nadal, almost 4 000 points adfrift.

Roger Federer, meanwhile, is just 295 points behind Nadal and could overtake him with a goood performance at the Shanghai Masters this week.

ATP Top 20

1. Novak Djokovic (SRB) 12 150
2. Rafael Nadal (ESP) 8 465
3. Roger Federer (SUI) 8 170
4. Stan Wawrinka (SUI) 5 555
5. David Ferrer (ESP) 4 495
6. Kei Nishikori (JPN) 4 435
7. Tomas Berdych (CZE) 4 235
8. Milos Raonic (CAN) 3 965
9. Marin Cilic (CRO) 3 935
10. Grigor Dimitrov (BUL) 3 710
11. Andy Murray (GBR) 3 545
12. Jo-Wilfried Tsonga (FRA) 3 065
13. Ernests Gulbis (LAT) 2 455
14. John Isner (USA) 1 925
15. Gal Monfils (FRA) 1 915
16. Kevin Anderson (RSA) 1 875
17. Fabio Fognini (ITA) 1 870
18. Roberto Bautista (ESP) 1 865
19. Juan Martin Del Potro (ARG) 1 865
20. Tommy Robredo (ESP) 1 750