For sporting greats, knowing when to quit is the hardest challenge of all

When the men’s seedings for Wimbledon were published, they contained something that was both telling and inevitable. Rafael Nadal, winner of the tournament in 2008 and 2010, was ranked just 10th. No one could doubt that the Spaniard is one of the most formidable players ever to have held a tennis racquet. His 14 grand-slam wins stand second equal with Pete Sampras in the all-time men’s rankings behind Roger Federer’s 17. But at the age of just 29, the growing sense is that his best years are behind him. —> Read More