Hiring Andy Murray as his coach came naturally for Novak Djokovic. On a trip to Argentina to play in a farewell match for Juan Martín del Potro, the Serbian explained why he chose his former rival after being without a coach for six months.

Novak Djokovic says his decision to appoint former rival Andy Murray as his coach was "a surprise to everyone" but is "exciting for tennis".

Novak Djokovic says his new coaching partnership with Andy Murray inspires him, and that he is sad to see his top rivals retire as he gears up to face Juan Martin del Potro in a farewell exhibition match in Buenos Aires.

Novak Djokovic stunned the tennis world when he annoucned Andy Murray was joining his team - now he has explained why.