Sport's greatest rivalry?
It will be of little consolation to Andy Murray that he had an on-court seat for arguably the greatest multi-player rivalry in tennis history: in the final reckoning, our good fortune is the British number one's rank bad luck.
American golfer called his recent autobiography 'The Big Three and Me': 30 years after his retirement from the PGA Tour, Casper is still defined by the deeds of others. And this is a man who won three major titles.
Had Murray been born 10 years earlier he might have replicated Casper's feat but as the years tick by a genuine fear is brewing that he will never pierce the iron curtain that Federer, Nadal and Djokovic have thrown round men's tennis.