The recently retired Scot says his new charge is undoubtedly the greatest tennis player of all time, but has struggled to stay motivated since winning his first Olympic gold medal last year.

Andy Murray is working with Novak Djokovic as his coach as the Serbian aims for his 11th Australian Open title - and one former tennis player has had his say on their partnership

Novak Djokovic stood with his hands on his hips, listening intently to Andy Murray — his longtime on-court rival and now, stunningly, his coach at the Australian Open — between sets at Rod Laver Arena.