Rafael Nadal's uncle and coach Toni believes that his nephew's rival Roger Federer should be regarded as the greatest tennis player of all time.

Federer leads the way in Grand Slam titles with 17, while Nadal, who has been dogged by injury this season, currently has 14 major titles to his name.

"I think he is [the best of all-time] - the numbers say so," Toni Nadal told Spanish radio station Cadena COPE. "Federer is the best in the history of the game alongside Rod Laver and, unfortunately for us, it is like that."

Federer also added his first ever Davis Cup medal to his list of achievements by guiding Switzerland to glory over France last month.