In Nadal, Williams and Federer, they don't come much bigger. All three have now retired, with a combined 65 Grand Slam titles ...

“Do you guys remember, if you go back kind of seven or eight years ago, they really only had like one or two practice courts ...

Despite calling an end to his career almost three years ago, Swiss tennis legend Roger Federer ranks above all tennis players on the list of highest-paid athletes of all time, polled by Sportico.