As Andy Murray joins Novak Djokovic as his coach for the Australian Open, BBC Sport takes a look at the defining moments of their great rivalry.

Novak Djokovic returns to the scene of his greatest triumphs this week at the Australian Open, adamant he is ready and able to see off the challenge from Jannik Sinner and Carlos Alcaraz in his pursuit of a record 25th Grand Slam crown.

Novak Djokovic and his new coach, Andy Murray have trained together in Melbourne on Tuesday, January 7.As per BBC Sports, this practice session occurred for the first time ahead of the Grand Slam tournament which is scheduled to begin

Novak Djokovic and new coach Andy Murray have been seen practising together for the first time ahead of the start of the Australian Open on Sunday.

Novak Djokovic is set to compete at the Australian Open for the 20th time in his career. Here is what's at stake at his most successful grand slam.

Novak Djokovic is targeting an 11th Australian Open title and record 25th Grand Slam crown but faces an uphill battle against Jannik Sinner and Carlos Alcaraz. - Carlos Alcaraz - Still just 21, the Spaniard already owns four Grand Slam titles -- including the French Open and Wimbledon last year -- since bursting on the scene with victory at the US Open in 2022.

Fresh off of an incredible finish to the 2024 campaign, Sinner will come into the first grand slam tournament of the season as the odds-on favorite. Last season, the 23-year-old cemented himself as one of the heirs to the throne in men’s tennis by winning the Australian Open and the U.