Serbian tennis ace and World No 1 Novak Djokovic was disqualified from the US Open on Sunday after striking a female lines official in the throat with a ball.

The Serbian pulled the ball from his pocket and smashed it in disgust in the direction of the official as he went 5-6 down in the first set to Spain's Pablo Carreno Busta.&nbsp;

Also read|&nbsp;<a href="https://www.wionews.com/sports/watch-top-seed-novak-djokovic-disqualified-from-us-open-after-hitting-judge-with-ball-325614" hreflang="en">Watch: Top-seed Novak Djokovic disqualified from US Open after hitting judge with ball</a>

The ball hit the official with a considerable force that she was left gasping and coughing. She fell in the Arthur Ashe court clutching her throat.

Djokovic rushed over to check that she was okay. He put his hand on her shoulder as she appeared to be struggling to catch her breath.

After a few minutes, she got up and walked off the court.&nbsp;According to the rules of the grand slam,&nbsp;''players shall not at any time physically abuse any official, opponent, spectator or other person within the precincts of the tournament.''

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Therefore, the umpire declared that Carreno Busta had won by default after a ten minutes discussion with the Serbian and rules officials.&nbsp;

Also read:&nbsp;<a href="https://www.wionews.com/sports/djokovics-disqualification-reminds-many-of-john-mcenroe-during-1990-australian-open-325667" hreflang="en">Djokovic's disqualification reminds many of John McEnroe during 1990 Australian Open</a>

It made Djokovic one of a handful of players to be defaulted from the men's singles tournament of a Grand Slam since John McEnroe was infamously tossed from the Australian Open in 1990.

While the debate regarding the accuracy of the decision is still being questioned, their are several lessons that can be learned from the incident.

The primary lesson being that of keeping nerves in check during a match and staying calm.

Djokovic has a reputation for this sudden burst of anger. He has even been called out for it in the past.

As per Newton's third law of motion, every action has an equal and opposite reaction.&nbsp;It applies to tennis courts and to life in general.

While being passionate about&nbsp;work is important, but there is no excuse for misbehaving with a colleague.

What defines people more than their&nbsp;work, the awards and the accolades, is the person they&nbsp;are and how we react to different situations.

There is no bigger victory than winning over the rush of negative emotions and remaining calm and polite in the most difficult of times.

Serbian tennis ace and World No 1 Novak Djokovic was disqualified from the US Open on Sunday after striking a female lines official in the throat with a ball. The Serbian pulled the ball from his pocket and smashed it in disgust in the direction of the official as he went 5-6 down in the first set to Spain's Pablo Carreno Busta.

Serbian tennis ace and World No 1 Novak Djokovic was disqualified from the US Open on Sunday after striking a female lines official in the throat with a ball. The Serbian pulled the ball from his pocket and smashed it in disgust in the direction of the official as he went 5-6 down in the first set to Spain's Pablo Carreno Busta. Also read| Watch: Top-seed Novak Djokovic disqualified from US Open after hitting judge with ball The ball hit the official with a considerable force that she was left gasping and coughing. She fell in the Arthur Ashe court clutching her throat. Djokovic rushed over to check that she was okay. He put his hand on her shoulder as she appeared to be struggling to catch her breath. After a few minutes, she got up and walked off the court. According to the rules of the grand slam, ''players shall not at any time physically abuse any official, opponent, spectator or other person within the precincts of the tournament.'' × Therefore, the umpire declared that Carreno Busta had won by default after a ten minutes discussion with the Serbian and rules officials. Also read: Djokovic's disqualification reminds many of John McEnroe during 1990 Australian Open It made Djokovic one of a handful of players to be defaulted from the men's singles tournament of a Grand Slam since John McEnroe was infamously tossed from the Australian Open in 1990. While the debate regarding the accuracy of the decision is still being questioned, their are several lessons that can be learned from the incident. The primary lesson being that of keeping nerves in check during a match and staying calm. Djokovic has a reputation for this sudden burst of anger. He has even been called out for it in the past. As per Newton's third law of motion, every action has an equal and opposite reaction. It applies to tennis courts and to life in general. While being passionate about work is important, but there is no excuse for misbehaving with a colleague. What defines people more than their work, the awards and the accolades, is the person they are and how we react to different situations. There is no bigger victory than winning over the rush of negative emotions and remaining calm and polite in the most difficult of times.

Lessons that can be learned from Djokovic's US Open disqualification

World number one Novak Djokovic is in action on day five of the US Open Friday, when he seeks to progress to the last 16 at Flushing Meadows.

The Serbian goes up against 28th seed Jan-Lennard Struff of Germany in the first evening match at Arthur Ashe Stadium.

Djokovic is 4-0 against Struff and defeated him in four sets in round one on the way to winning the Australian Open earlier this year.

Djokovic is chasing an 18th Grand Slam title at the Billie Jean King US National Tennis Center.

He is looking to close the gap on Roger Federer and Rafael Nadal, both absent from the tournament, in the race for the all-time men's Slam singles title record.

Djokovic is on 17, with Nadal on 19 and Federer on 20.

Also Friday, Naomi Osaka, a two-time Grand Slam winner, returns to the court for a third-round matchup against unseeded Marta Kostyuk of Ukraine.

Sixth seed Petra Kvitova of the Czech Republic is also in action, taking on 63rd-ranked American Jessica Pegula.

In the men's competition, fourth seed Stefanos Tsitsipas plays 27th seed Borna Coric of Croatia for a spot in the fourth round.

Elsewhere, seventh-seed David Goffin from Belgium goes head-to-head with Filip Krajinovic of Serbia, who is ranked 26th.

Friday will also see the resumption of four singles matches which were postponed due to rain late Thursday.

Unseeded Frenchman Corentin Moutet leads Britain's Dan Evans, seeded 23rd, 4-6, 6-3, 6-5 in their second-round game.

While in the women's draw, Elise Mertens, seeded 16th, will resume 6-3, 1-0, ahead against Spain's Sara Sorribes Tormo.

World number one Novak Djokovic is in action on day five of the US Open Friday, when he seeks to progress to the last 16 at Flushing Meadows. The Serbian goes up against 28th seed Jan-Lennard Struff of Germany in the first evening match at Arthur Ashe Stadium.

World number one Novak Djokovic is in action on day five of the US Open Friday, when he seeks to progress to the last 16 at Flushing Meadows. The Serbian goes up against 28th seed Jan-Lennard Struff of Germany in the first evening match at Arthur Ashe Stadium. Djokovic is 4-0 against Struff and defeated him in four sets in round one on the way to winning the Australian Open earlier this year. Djokovic is chasing an 18th Grand Slam title at the Billie Jean King US National Tennis Center. He is looking to close the gap on Roger Federer and Rafael Nadal, both absent from the tournament, in the race for the all-time men's Slam singles title record. Djokovic is on 17, with Nadal on 19 and Federer on 20. Also Friday, Naomi Osaka, a two-time Grand Slam winner, returns to the court for a third-round matchup against unseeded Marta Kostyuk of Ukraine. Sixth seed Petra Kvitova of the Czech Republic is also in action, taking on 63rd-ranked American Jessica Pegula. In the men's competition, fourth seed Stefanos Tsitsipas plays 27th seed Borna Coric of Croatia for a spot in the fourth round. Elsewhere, seventh-seed David Goffin from Belgium goes head-to-head with Filip Krajinovic of Serbia, who is ranked 26th. Friday will also see the resumption of four singles matches which were postponed due to rain late Thursday. Unseeded Frenchman Corentin Moutet leads Britain's Dan Evans, seeded 23rd, 4-6, 6-3, 6-5 in their second-round game. While in the women's draw, Elise Mertens, seeded 16th, will resume 6-3, 1-0, ahead against Spain's Sara Sorribes Tormo.

Djokovic resumes 18th Slam chase on US Open day five

Novak Djokovic said his own "intensity" powered him into the second round of a crowdless US Open Monday as he started his bid for an 18th Grand Slam off with a straight-sets win.

The Serbian superstar defeated unheralded Damir Dzumhur of Bosnia-Herzegovina 6-1, 6-4, 6-1 in just under two hours at an eerily quiet Arthur Ashe Stadium in New York.

The world number one took just 23 minutes to win the first set but labored to a narrow victory in the second before propelling himself into into round two with a convincing third.

"I came out, played really well the first set. Second set I lost my focus, kind of got stressed out a couple times, screamed," he told reporters.

"That's obviously still there, regardless of the empty stadium. But this is what I bring to the court. I bring a lot of intensity, energy. Sometimes my reactions may not be so positive, but I try to bounce back," he added.

Midway through the second set a clearly agitated Djokovic shouted in the direction of the stands at members of his team.

"Not the first time, probably not the last time," he said.&nbsp;

"I was frustrated with my game, with some of the shots that I was playing at that time. Just I guess channeled it out in that way.

"That's I guess not always the reaction that I want. As I said, that's kind of a game and kind of an intensity that I bring on the court. Sometimes these things happen."

Djokovic was also irked by a serve-clock rule that appeared quicker than at last week's tournament at the same venue.

"I&nbsp;was not aware of it. No one really brought it to my attention. The lack of communication is something that worries me once again," he moaned.

"We've played in the certain tempo, got used to it during the Western &amp; Southern tournament, which just ended two days ago.

"Two days later we have a different rule that was just not communicated to us. That's something that I found just not acceptable, not fair. But I guess I have to deal with it, and that's it."

The absence of defending champion Rafael Nadal and Swiss legend Roger Federer at Flushing Meadows gives Djokovic a prime opportunity to gain ground on his rivals in the chase for the all-time men's Grand Slam singles title record.

Djokovic currently has 17, behind Nadal on 19 and Federer on 20.

The 33-year-old takes on Britain's Kyle Edmund in the second round at the US National Tennis Center.

"He does have a really good serve and forehand, two really big weapons," Djokovic said of Edmund, ranked 44th in the world.

"I have a lot of respect for him. He's a really hard worker, puts a lot of hours on and off the court into perfecting his game.

"I think he does have the game and the potential to be in the top 20 without a doubt, where I expect him to be soon. So it's going to be a tough one," added the three-time US Open champion.

Novak Djokovic said his own "intensity" powered him into the second round of a crowdless US Open Monday as he started his bid for an 18th Grand Slam off with a straight-sets win.

Novak Djokovic said his own "intensity" powered him into the second round of a crowdless US Open Monday as he started his bid for an 18th Grand Slam off with a straight-sets win. The Serbian superstar defeated unheralded Damir Dzumhur of Bosnia-Herzegovina 6-1, 6-4, 6-1 in just under two hours at an eerily quiet Arthur Ashe Stadium in New York. The world number one took just 23 minutes to win the first set but labored to a narrow victory in the second before propelling himself into into round two with a convincing third. "I came out, played really well the first set. Second set I lost my focus, kind of got stressed out a couple times, screamed," he told reporters. "That's obviously still there, regardless of the empty stadium. But this is what I bring to the court. I bring a lot of intensity, energy. Sometimes my reactions may not be so positive, but I try to bounce back," he added. Midway through the second set a clearly agitated Djokovic shouted in the direction of the stands at members of his team. "Not the first time, probably not the last time," he said. "I was frustrated with my game, with some of the shots that I was playing at that time. Just I guess channeled it out in that way. "That's I guess not always the reaction that I want. As I said, that's kind of a game and kind of an intensity that I bring on the court. Sometimes these things happen." Djokovic was also irked by a serve-clock rule that appeared quicker than at last week's tournament at the same venue. "I was not aware of it. No one really brought it to my attention. The lack of communication is something that worries me once again," he moaned. "We've played in the certain tempo, got used to it during the Western & Southern tournament, which just ended two days ago. "Two days later we have a different rule that was just not communicated to us. That's something that I found just not acceptable, not fair. But I guess I have to deal with it, and that's it." The absence of defending champion Rafael Nadal and Swiss legend Roger Federer at Flushing Meadows gives Djokovic a prime opportunity to gain ground on his rivals in the chase for the all-time men's Grand Slam singles title record. Djokovic currently has 17, behind Nadal on 19 and Federer on 20. The 33-year-old takes on Britain's Kyle Edmund in the second round at the US National Tennis Center. "He does have a really good serve and forehand, two really big weapons," Djokovic said of Edmund, ranked 44th in the world. "I have a lot of respect for him. He's a really hard worker, puts a lot of hours on and off the court into perfecting his game. "I think he does have the game and the potential to be in the top 20 without a doubt, where I expect him to be soon. So it's going to be a tough one," added the three-time US Open champion.

'Stressed out' Djokovic brings intensity to atmosphere-free US Open

Hot favourite to win the US Open 2020, Novak Djokovic on Monday will start his quest for an 18th Grand Slam title as a newly-looked, spectator-free US Open 2020 gets underway in COVID-19 quarantine bubble at Flushing Meadows.

The world number one headlines the opening day of tennis Grand Slam that promises to be an enthralling event despite missing several top players due to COVID-19 fears.

Djokovic will lock horns with Damir Dzumhur of Bosnia-Herzegovina in the opening round of evening match at Arthur Ashe Stadium, which generally is jam-packed 23,000 fans. However, this time around, only players, officials, and select media will be attending the event.&nbsp;

ALSO READ:&nbsp;<a href="https://www.wionews.com/sports/paire-removed-from-us-open-after-covid-19-positive-revealed-324201" hreflang="en">Paire removed from US Open after COVID-19 positive revealed</a>

"It is strange to see," said Djokovic, crediting his love of playing on the New York hardcourts to Ashe, which he described as "the most dynamic and explosive court" in the game.

"The circumstances are very unusual but we have to deal with it and try to embrace it," the Serbian superstar added.

The US Open 2020 will be the first Grand Slam of the coronavirus era and the first since Australian Open 2020, in January and February, after the COVID-19 pandemic brought the entire sporting world to a screeching halt.

ALSO READ:&nbsp;<a href="https://www.wionews.com/sports/ipl-2020-bcci-confirms-13-positive-covid-19-cases-after-initial-rounds-of-testing-323898" hreflang="en">IPL 2020: BCCI confirms 13 positive COVID-19 cases after initial rounds of testing</a>

The men’s draw was pushed to the edge on the eve of the tournament on Sunday when Franche’s Benoit Paire was removed after he was tested positive for COVID-19.&nbsp;

Under New York state rules, any player that tests positive is immediately withdrawn and must self-isolate for at least 10 days.

Meanwhile, the absence of top players like Rafael Nadal and Roger Federer gives Djokovic a golden chance to gain some ground on his rivals.&nbsp;

Top seed and three-time US Open winner Djokovic -- who has won five of the past seven Grand Slam crowns -- has 17 slams, behind Nadal on 19 and Federer on 20.

Hot favourite to win the US Open 2020, Novak Djokovic on Monday will start his quest for an 18th Grand Slam title as a newly-looked, spectator-free US Open 2020 gets underway in COVID-19 quarantine bubble at Flushing Meadows.

Hot favourite to win the US Open 2020, Novak Djokovic on Monday will start his quest for an 18th Grand Slam title as a newly-looked, spectator-free US Open 2020 gets underway in COVID-19 quarantine bubble at Flushing Meadows. The world number one headlines the opening day of tennis Grand Slam that promises to be an enthralling event despite missing several top players due to COVID-19 fears. Djokovic will lock horns with Damir Dzumhur of Bosnia-Herzegovina in the opening round of evening match at Arthur Ashe Stadium, which generally is jam-packed 23,000 fans. However, this time around, only players, officials, and select media will be attending the event. ALSO READ: Paire removed from US Open after COVID-19 positive revealed "It is strange to see," said Djokovic, crediting his love of playing on the New York hardcourts to Ashe, which he described as "the most dynamic and explosive court" in the game. "The circumstances are very unusual but we have to deal with it and try to embrace it," the Serbian superstar added. The US Open 2020 will be the first Grand Slam of the coronavirus era and the first since Australian Open 2020, in January and February, after the COVID-19 pandemic brought the entire sporting world to a screeching halt. ALSO READ: IPL 2020: BCCI confirms 13 positive COVID-19 cases after initial rounds of testing The men’s draw was pushed to the edge on the eve of the tournament on Sunday when Franche’s Benoit Paire was removed after he was tested positive for COVID-19. Under New York state rules, any player that tests positive is immediately withdrawn and must self-isolate for at least 10 days. Meanwhile, the absence of top players like Rafael Nadal and Roger Federer gives Djokovic a golden chance to gain some ground on his rivals. Top seed and three-time US Open winner Djokovic -- who has won five of the past seven Grand Slam crowns -- has 17 slams, behind Nadal on 19 and Federer on 20.

Hot favourite Novak Djokovic in action on Day 1 of US Open 2020