Novak Djokovic left 'sad' by Andy Murray as icon brings up Roger Federer and Rafael Nadal
Novak Djokovic has admitted he is “sad” that most of his long-term rivals have retired from tennis. The 24-time Grand Slam winner namechecked Andy Murray, Roger Federer and Rafael Nadal before appearing in an exhibition match in Buenos Aires to mark Juan Martin del Potro’s retirement.