US Open 2020: Novak Djokovic disqualified in fourth round after striking line judge with ball 'in frustration'

Djokovic was clearly making the point that he had not intended to hit the official and was overheard to say "she doesn't have to go to hospital for this".

After 12 minutes of pleading, Djokovic's fate was sealed.

The Grand Slam rules state: "Players shall not at any time physically abuse any official, opponent, spectator or other person within the precincts of the tournament site.

"The referee, in consultation with the Grand Slam chief of supervisors may declare a default for either a single violation of this code."

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Djokovic eventually walked over to shake hands with a stunned Carreno Busta and trudged off to face the music, although he later left the grounds in a black Tesla without attending a press conference.

It was a shocking end to the top seed's hopes of winning an 18th Grand Slam title and moving within two of the men's record total won by Roger Federer -- something that had looked increasingly likely as the fortnight progressed.

It also brought to an end Djokovic's 26-0 winning run since the start of the year, albeit in bizarre circumstances.

The USTA issued a statement saying that Djokovic would lose all the ranking points earned from the event and will be fined the $250,000 -- his prize money for reaching round four.

"It's the right decision," Tim Henman, who was disqualified from Wimbledon for a similar incident in 1995, told Amazon Prime. "He is not aiming for the line judge, but has hit the ball away and you have to be responsible for your actions."

Former champion Mats Wilander, analysing the action for Eurosport, said it was very unlucky for Djokovic but that it had been the correct decision.

"You are not allowed to do that," he said. "It's as much bad luck as you can have on a tennis court. He didn't just roll the ball back to the ball kid, that's the bottom line.

"He hit it harder than he intended to, obviously a complete accident. It was a sign of frustration, yes. A little bit. But it doesn't matter, you are not allowed to do it."

WIDE OPEN

The incredible development has blown the draw wide open, especially with defending champion Rafa Nadal and Federer absent this year. Nadal opted not to travel to New York because of concerns over the COVID-19 pandemic, while Federer is recovering from knee surgery.

A world number one being defaulted sent shockwaves around Flushing Meadows which has witnessed many crazy events down the years, including two high-profile incidents involving Serena Williams, most recently in the 2018 final against Naomi Osaka when she was docked a game near the end.

"I'm a little bit in shock right now, to be honest," Alexander Zverev told reporters after his own fourth-round win.

"If he would have hit it anywhere else, if it would have landed anywhere else, we are talking about a few inches, he would have been fine."

Carreno Busta will now face a quarter-final against either Denis Shapovalov or seventh seed David Goffin.

A tournament spokesman told Reuters the line judge 'appears to be okay and was not brought off-site'.

Her identity is not known.

Djokovic's humiliating exit continues what has been a turbulent few months for him. He was criticised for organising the Adria Tour exhibition event in June in which he and several players were tested positive for COVID-19.

He then dropped a bombshell on the eve of the Open by announcing he had resigned as president of the ATP Player Council to front a new players' association.

(With Reuters inputs)