John Isner joins top-10 club led by Djokovic

American John Isner on Monday joined the ranks of the world's top ten players after beating world number one Novak Djokovic in the semi-finals of the Indian Wells tournament at the weekend.

Serb Djokovic, winner at Indian Wells in 2011, sees his lead on Spaniard Rafael Nadal reduced. Swiss Roger Federer, who beat Nadal in the final to win the Indian Wells title, remains third behind the Spaniard.

Argentine Juan Martin Del Potro drops two places after losing to Federer in the quarter-finals in the California tournament.

1. Novak Djokovic (SRB) 12670 pts

2. Rafael Nadal (ESP) 10175

3. Roger Federer (SUI) 9350

4. Andy Murray (GBR) 7450

5. David Ferrer (ESP) 4700

6. Jo-Wilfried Tsonga (FRA) 4535

7. Tomas Berdych (CZE) 3860

8. Mardy Fish (USA) 2910

9. Janko Tipsarevic (SRB) 2730 (+1)

10. John Isner (USA) 2675 (+1)

11. Juan Martin Del Potro (ARG) 2660 (-2)

12. Nicolas Almagro (ESP) 2205

13. Gilles Simon (FRA) 2140

14. Gael Monfils (FRA) 1970

15. Feliciano Lopez (ESP) 1890

16. Kei Nishikori (JPN) 1685 (+1)

17. Richard Gasquet (FRA) 1595 (-1)

18. Oleksandr Dolgopolov Jr. (UKR) 1540 (+3)

19. Florian Mayer (GER) 1540 (-1)

20. Fernando Verdasco (ESP) 1530 (-1)