Roger Federer has dropped four places to No 15 in the latest ATP rankings, having exited the top 10 last week.

The 40-year-old Swiss is sidelined with a right knee injury and has not played since a straight sets quarter-final defeat to Poland’s Hubert Hurkacz at Wimbledon in July.

Federer dropping four spots means Great Britain’s Cameron Norrie, a recent winner at Indian Wells, and Italy’s Jannik Sinner, who won the European Open, move ahead of the Swiss great.

Norrie is now at a career-high ranking of No 14 and Sinner at a best-ever No 11.

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Elsewhere, Novak Djokovic continues to top the rankings ahead of Russia’s Daniil Medvedev, while former world No 1 Andy Murray has moved up 16 spots to No 156.

ATP Tour rankings (top 20):

1. Novak Djokovic (SRB) 11430 pts

2. Daniil Medvedev (RUS) 9630

3. Stefanos Tsitsipas (GRE) 7930

4. Alexander Zverev (GER) 6680

5. Rafael Nadal (ESP) 5635

6. Andrey Rublev (RUS) 5560

7. Matteo Berrettini (ITA) 4688

8. Casper Ruud (NOR) 3615 (+1)

9. Dominic Thiem (AUT) 3405 (-1)

10. Hubert Hurkacz (POL) 3378

11. Jannik Sinner (ITA) 3260 (+2)

12. Felix Auger-Aliassime (CAN) 3196

13. Denis Shapovalov (CAN) 2903 (+2)

14. Cameron Norrie (GBR) 2895 (+2)

15. Roger Federer (SUI) 2785 (-4)

16. Diego Schwartzman (ARG) 2693 (-2)

17. Christian Garin (CHI) 2510

18. Pablo Carreno Busta (ESP) 2400

19. Aslan Karatsev (RUS) 2392 (+3)

20. Roberto Bautista Agut (ESP) 2225

Other:

156. Andy Murray (GBR) 431 (+16)

Picture: Cameron Norrie – AFP/Twitter