Nick Kyrgios has had an assault charge dismissed by a magistrate today after he pleaded guilty to shoving over his ex-girlfriend in 2021.

The tennis star fronted the ACT Magistrates Court in Canberra on Friday where a bid to have the assault charge thrown out on mental health grounds was rejected. 

But magistrate Beth Campbell threw out the charge, accepting the seriousness of the matter was 'low-level' and indicating Kyrgios was not a risk of reoffending.

The Wimbledon finalist had admitted assaulting then-girlfriend Chiara Passari on January 10, 2021, by pushing her to the ground after a heated argument. 

Kyrgios said he was 'not in a good place' at the time, and that he 'reacted to a difficult situation in a way I deeply regret'.

'I respect today's ruling and I'm grateful to the court for dismissing the charges without conviction,' he said in a statement. 'I was not in a good place when this happened and I reacted to a difficult situation in a way I deeply regret.

'I know it wasn't OK and I'm sincerely sorry for the hurt I caused.

'Mental health is tough. Life can seem overwhelming. But I've found that getting help and working on myself has allowed me to feel better and to be better.'

Kyrigos finished the statement with a message to his supporters.

'I can never thank Costeen, my family and friends enough for supporting me through this process,' he said. 'I now plan to focus on recovering from injury and moving forward in the best way possible.'

The 27-year-old World no. 20 was charged with common assault after he pushed Ms Passari to the ground during an argument when they went out for dinner in the Canberra suburb of Kingston in December 2021.

The court heard Ms Passari was standing in the door of an Uber preventing Kyrgios from leaving when he shoved her over. 

He stood over her and remarked 'seriously' while she lay on the ground.

Ms Passari reported suffering shoulder pain along with grazing on her knee.

Kyrgios had told Ms Passari to 'leave me the f*** alone' and to 'just f***ing p**s off' while she asked him to get out of the car and to calm down.

Ms Passari didn't report the incident until 10 months later, when the couple split after getting back together following the incident.

In a statement read to the court, Ms Passari said she had been severely traumatised by the incident, experiencing severe weight loss, staying in bed day and night - unable to sleep or form new romantic relationships.

Lawyers for Kyrgios appealed to have the charge of one count of common assault dismissed on mental health grounds, arguing it was an isolated incident and out of character.

Psychologist Sam Borenstein told the court Kyrgios suffered from recurring major depression, which included black periods, thoughts of self harm, insomnia, agitation and feelings of guilt.

Borenstein said the tennis star had relied on alcohol and drugs as a means of coping, but was now making progress in dealing with the issues.

Magistrate Beth Campbell heard that appeal but ultimately dismissed the case without conviction.

Campbell said Kyrgios acted poorly but the offence was not planned or premeditated and was a 'single act of stupidity' by a young man attempting to remove himself from a tense situation.

The court was told Kyrgios shoved Passari, who was preventing him from leaving her Canberra apartment.

'I do not record a conviction against your name, I do not find any necessity to place you on a good behaviour bond,' Campbell said.

Kyrgios had hobbled into court in Canberra with a pair of crutches and a brace on his knee, after suffering a "gruesome" injury that sidelined him at last month's Australian Open.

He was flanked by his current girlfriend Costeen Hatzi, an interior designer, his mother Norlaila and brother Christos.   

The case was adjourned in October, as Kyrgios prepared to play the Japan Open, so experts could produce mental health reports for the court.

"There's only so much I can control and I'm taking all the steps and dealing with that off the court," Kyrgios said from Tokyo at the time.

Magistrates have the power to dismiss a charge if they believe the accused is mentally impaired and that treating the matter in that manner would benefit both the offender and the community. Magistrate Glenn Theakston adjourned the case until today.

The 27-year-old was initially scheduled to appear in court in 2022 but was successful in seeking an adjournment to play in the US Open. 

Currently ranked 20th in the world, Kyrgios featured prominently in the first episode of Netflix's new Break Point tennis documentary.

"I now plan to focus on recovering from injury and moving forward in the best way possible," he said.

The fan favourite won the Australian Open men's doubles crown with close friend Thanasi Kokkinakis last year but was ruled out of this year's tournament before playing a match.

His manager Daniel Horsfall said he had recently undergone surgery to remove a cyst inside his knee.

"The surgery went great, to be honest, we couldn't have asked for a better result," he told radio station SEN.

"He might be recovering faster than what we were expecting, so it's good news."

He is hoping to return to court for the Indian Wells Masters in California in March. 

Just 30 minutes before his scheduled appearance, Kyrgios was relaxed enough to post a meme on Twitter comparing NBA players Jaren Jackson Jr and Anthony Davis.

Kyrgios, a self-confessed NBA fan, posted the meme with the caption 'LOL'. 

Kyrgios has spoken publicly about his mental health struggles throughout his career.

He described his performance at the 2019 Australian Open as 'one of my darkest periods' despite it being a time when 'most would assume I was doing ok mentally or enjoying my life'.

'I was lonely, depressed, negative, abusing alcohol, drugs, pushed away family and friends,' he said.

'I felt as if I couldn't talk or trust anyone. This was a result of not opening up and refusing to lean on my loved ones and simply just push myself little by little to be positive.'

His lawyers previously told the court Kyrgios had experienced mental health issues which been disclosed in his medical records over the past seven years.

Kyrgios spoke about his court case while he was playing in the Japan Open in October, telling reporters in Tokyo he had been dealing with it 'for months' and was taking it 'day by day'.

'There's only so much I can control and I'm taking all the steps and dealing with that off the court,' Kyrgios said at the time. 

Kyrgios burst to fame as a 19-year-old in 2014, when he shocked the tennis world by beating Rafael Nadal to reach the quarter-finals of Wimbledon.

Often criticised for squandering his talents, Kyrgios reached the final of last year's Wimbledon, but was comprehensively beaten by Novak Djokovic.