Great Britain's Andy Murray (L), Switzerland's Roger Federer (R) and Argentina's Juan Martin del Potro wave at the crowd with their gold, silver and bronze medals respectively, at the end of the men's singles tennis tournament of the London 2012 Olympic Games, at the All England Tennis Club in Wimbledon, southwest London, on August 5, 2012.   AFP PHOTO / MARTIN BERNETTI        (Photo credit should read MARTIN BERNETTI/AFP/GettyImages)