Losing the best three players of all time would be a massive blow to any sport, but ATP chief Andrea Gaudenzi says tennis is strong enough to thrive after Roger Federer, Rafa Nadal and Novak Djokovic hang up their rackets.

Federer returned to the court this week after 14 months on the sidelines, and Nadal and Djokovic are going nowhere soon, but they are all well past the age of 30 and the ATP will eventually have to put on tournaments without them.

"I am not worried at all for our sport, if we do the right thing," Gaudenzi told Reuters this week.