Novak Djokovic equaled two all-time tennis records by starting his 21st Australian Open, and he added another milestone Monday night with his 100th win at Melbourne Park.

A defiant Novak Djokovic launches his latest bid to win a record 25th Grand Slam crown while title contenders Coco Gauff and Iga Swiatek are also in action at the Australian Open on Monday.

Novak Djokovic said Saturday he likes his chances at the Australian Open despite "missing a bit of juice" in the legs, declaring he can still beat anyone on his day.

Nick Kyrgios urged Novak Djokovic to stay in tennis "as long as possible" after the Serbian great Tuesday pulled out of his only lead-up tournament to the Australian Open, saying he was "not quite physically ready".

Serbian great Novak Djokovic Tuesday pulled out of the Adelaide International, saying he was "not quite physically ready" as prepares for the Australian Open.

Novak Djokovic, has decided to pull out of next week's Adelaide International, the build-up event for the year's first Grand Slam tournament, the Australian Open.

Explaining his decision to quit PTPA, Novak Djokovic said: "my values and approach are no longer aligned with the current direction of the organization."

Novak Djokovic, the undisputed king of men's tennis with a record 24 Grand Slam titles, opened up in a refreshingly honest manner about the challenges of breaking into the sport's elite level during the height of the Roger Federer-Rafael Nadal rivalry.

Former British tennis great Andy Murray said Monday he was "disappointed" with Novak Djokovic's results while coaching his former rival.

Novak Djokovic won the 101st title of his career when he came from behind to beat Lorenzo Musetti 4-6, 6-3, 7-5 in the final of the ATP event in Athens on Saturday.