Rafael Nadal called time on his illustrious tennis career last year, but the Spaniard is still keen to compete against his former 'Big Four' rivals in another sport

Having showcased maturity at the biggest of stages, that too consistently, Alcaraz has left no doubt in the mind of Djokovic that he has reached the level of the all-time greats.

Rafael Nadal and Andy Murray both retired from professional tennis last year, but the old rivals are taking very different approaches to their post-playing careers. While Nadal hasn’t even touched a racket since his farewell in November, Murray is already back on the circuit in a new role.