Former World No. 2 chooses the greatest player between Rafael Nadal and Novak Djokovic

Rafael Nadal and Novak Djokovic, alonsgide Roger Federer, are considered among the greatest tennis of all time. But who is the best? Former World No. 2 picks and explains his choice.

• Former World No. 1 and seven-time Grand Slam champion chooses best tennis player of all time
• Legend Chris Evert chooses the greatest male and female tennis players of all time