Novak Djokovic set for knee surgery which will rule him out of Wimbledon

Novak Djokovic had to pull out of Roland Garros through injury

Novak Djokovic is to undergo knee surgery in Paris which will rule him out of Wimbledon, according to reports in France.

The 24-time grand slam champion suffered a knee injury during his five-set win over Francisco Cerundolo in the French Open fourth round on Monday.