Former US Open champion names the greatest player between Djokovic, Nadal and Federer

A former US Open champion has named his pick for the greatest player among the “Big Three”: Novak Djokovic, Rafael Nadal, and Roger Federer.

• Former World No. 1 and French Open champion picks greatest player between Federer, Djokovic and Nadal
• Former World No. 5 chooses greatest player of all time between Djokovic and Nadal