Tennis legends Roger Federer and Novak Djokovic have both made millions from their careers on the court, but the Swiss has also shown his business nous away from the game

Federer won his 20th and final Grand Slam title at the 2018 Australian Open, beating Marin Cilic in a thrilling five-setter. He became the first man to get to 20 Majors, and the weight of the occasion got to him - he burst into tears during the trophy presentation.

Roger Federer has turned his sporting success into financial triumph with a shrewd investment that dwarfs his tennis earnings. The Swiss legend's 3% stake in On Running has ballooned to an astonishing £277m ($360m).