Tennis star Nick Kyrgios is on Friday expected to ask an Australian court to drop an assault charge against him, citing struggles with his mental health.

Novak Djokovic won a record-extending 10th Australian Open title on Sunday despite battling an injury that would have forced most players to quit, his coach Goran Ivanisevic said, adding that the world number one kept getting "crazier and crazier".

Novak Djokovic, who won a record-equalling 22nd Grand Slam title on Sunday, is driven on through controversy by his determination to be the greatest ever.

An emotional Novak Djokovic beat Stefanos Tsitsipas Sunday to claim a 10th Australian Open title and equal Rafael Nadal's 22 Grand Slam crowns, a victory that returned him to world number one.

Novak Djokovic's father was absent from his son's player's box for the Australian Open final Sunday following a controversy over images of him posing with a Russian flag featuring Vladimir Putin.

Facts and figures ahead of Sunday's Australian Open men's final (x denotes seeding):

Novak Djokovic has won all nine of his previous Australian Open finals so confidence is sky-high as he bids to equal Rafael Nadal's Grand Slam record and return to world number one.

An emotional Aryna Sabalenka battled back from a set down to beat Elena Rybakina and win the Australian Open on Saturday for her first Grand Slam title.

Novak Djokovic stands on the brink of a record-equalling 22nd Grand Slam title and it is his determination to be the greatest ever which drives him on through the controversies.

Stefanos Tsitsipas will become Greece's first Grand Slam champion and a world number one if he wins the Australian Open final on Sunday -- he will have his father to thank if he does.

Facts and figures ahead of Friday's Australian Open men's semi-finals (x denotes seeding):

Novak Djokovic has won all nine of his Australian Open semi-finals and is not ready to let Tommy Paul ruin his unblemished record on Friday as he closes in on a 22nd Grand Slam crown.

Aryna Sabalenka surged into the Australian Open final with a 7-6(1) 6-2 win over unseeded Pole Magda Linette on Thursday to extend the red-hot Belarusian's unbeaten start to the year and book a clash with Elena Rybakina.

Self-described "obnoxious soccer mom" Victoria Azarenka was ordered to take off her Paris St Germain shirt at the Australian Open on Thursday before bowing out of the Grand Slam with a straight sets defeat by Elena Rybakina in the semi-finals.

Andy Murray's 4:05 am finish eventually caught up with him at the Australian Open as the Briton bowed out in typically defiant style to Roberto Bautista Agut in round three on Saturday.

World number one Iga Swiatek fired an Australian Open warning to her rivals with a crushing 6-0, 6-1 win over Spanish qualifier Cristina Bucsa on Friday.

Third seed Stefanos Tsitsipas kept his unbeaten streak this year intact Friday with another romp at the Australian Open to set up a round of 16 clash with dangerous Italian Jannik Sinner.

An irrepressible Daniil Medvedev overcame a partisan crown and tough veteran John Millman to march a step closer towards a third consecutive Australian Open final on Wednesday.

Coco Gauff won the battle of the game's bright young prodigies on Wednesday as she battled past Emma Raducanu 6-3, 7-6 (7/4) and into the third round of the Australian Open.

Second seed Ons Jabeur joked that her coach was "going to kill me" after her quest for a maiden Grand Slam title at the Australian Open began with a shaky three-set victory on Tuesday.