The end of Tennis’ Big Three (and Murray)? Nadal retirement would leave sport needing new stars urgently

You have to cast your mind back to 2002 and Thomas Johansson, Albert Costa, Lleyton Hewitt and Pete Sampras for a year when none of the modern Big Three, or Andy Murray, won a Grand Slam. Because in each of the 21 years since at least one of Novak Djokovic, Rafael Nadal, Roger Federer or [...]