Roger Federer donated one million Swiss Francs to the vulnerable in his home nation ©Getty Images

Some of the world's best tennis players have donated large sums of money to help aid the relief of the pandemic surrounding coronavirus.

Serbian player and 17-time Grand Slam winner Novak Djokovic pledged €1 million (£895,000/$1.1million) through his and his wife Jelena's charity, Novak Foundation to purchase medical equipment and supplies for Serbian hospitals.

In a statement on his Instagram, Djokovic said, "We have spent the past several weeks gathering every piece of necessary information on COVID-19 in order to make this informed decision on how my family could make the biggest impact on our country.

"People from the Republic of China have given us tremendous help and support, we cannot thank them enough."

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Dear friends, this is a video from the press conference my wife @jelenadjokovicndf and I hosted this afternoon to announce that we donated 1 million euros through our @novakfoundation to Serbia for the purchase of medical equipment and supplies. We have spent the past several weeks gathering every piece of necessary information on COVID-19 in order to make this informed decision on how my family could make the biggest and best impact on our country. People from the Republic of China have given us tremendous help and support, we cannot thank them enough. I keep receiving calls from all over the world and people want to help but don’t know where or how. We have decided to open an emergency account through Novak Djokovic Foundation where our family money will go and I’m directing any other person that wishes to help to donate there. All the money will go towards the purchase of respirators, medical equipment, and any required supplies like masks. I am fully aware of how much this crisis has impacted everyone on all fronts.. I am touched by the generosity that keeps pouring from across the globe with the intention to give back and help in Serbia. I am very proud to be an athlete in these times, among many greats who have come forward to bring people together at a time when we are apart - to bring hope, community, and inspire others in the same way to use our platforms for good. This is what life is all about - giving. For more information, please visit @novakfoundation and Our team is here to help. Stay positive, we will get through this together 🙏🏼❤️. Much love to all, Novak

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Rafael Nadal, partnered by six-time National Basketball Association (NBA) All-Star Pau Gasol have launched the #NuestraMejorVictoria campaign meaning Our Best Victory in English.

They aim to raise €11 million (£9.8million/$12.2m) for the Red Cross and have already been supported by fellow tennis stars Feliciano López, David Ferrer, Garbiñe Muguruza and Carla Suárez Navarro. 

Other compatriots from other sports to back the campaign include Formula One drivers Fernando Alonso and Carlos Sainz, former Real Madrid goalkeeper Iker Casillas and track and field athletes Bruno Hortelano and Orlando Ortega.

The most decorated player in men's tennis, Roger Federer has also donated one million Swiss Francs (£850,000/$1.05million/€940,000) to help vulnerable Swiss families with the nation being one of the hardest-hit by the coronavirus.

Young rising star Jannik Sinner has come up with a more creative way of donating money - by sending €10 (£8.95/$11.14) towards medical supplies for every picture of a pizza that looks like him or any other Italian figure.

The 18-year-old, matched by his management company Starwing Sports, will donate the money for every uploaded photo to Instagram using the hashtag #SinnerPizzaChallenge.

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Mentre siamo tutti a casa in isolamento, ho pensato che potesse essere il momento giusto per lanciare una piccola sfida di donazione per il nostro paese 🇮🇹 Io e la mia agenzia di gestione @starwingsports doneremo forniture mediche di vitale importanza per aiutare l'Italia in questo momento difficile a causa di COVID -19. Ogni foto che caricherete di un sosia di Pizza di me stesso o di una figura italiana del passato o del presente, doneremo 10 €. Carica una foto della tua pizza fatta in casa usando #SinnerPizzaChallenge per sensibilizzare e spero ispirare gli altri a donare come possono per aiutarci tutti a superare questo. Ps se desideri partecipare anche tu alla donazione sentiti libero di farlo usando il link in bio. È importante rimanere uniti in questi momenti di bisogno ❤️ Non vedo l'ora di vedere le tue foto! - Whilst we’re all home in confinement I thought it could be appropriate time to throw a little donation challenge for our country 🇮🇹 Myself & my management agency @starwingsports are going to donate vital medical supplies to help Italy through this tough time due to COVID-19. Every photo you guys upload of a Pizza lookalike of myself or any italian figure from the past or present we will donate 10€. Upload a photo of your homemade pizza using #SinnerPizzaChallenge to build awareness and hopefully inspire others to donate as they can in order to help us all get through this. Ps if you wish to donate as well feel free to do so using the link in my bio. It is important we stick together in these times of need ❤️ I look forward to seeing your photos! #ForItaly #LetsStickTogether #StaySafe #VivaItalia #TannisAtHome @atptour

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Elsewhere, French player Nicholas Mahut, best known for playing the longest match in tennis history against John Isner, competed in a FIFA tournament that aimed to raise money for relief.

Finally, Colombian doubles player Juan Sebastian Cabal is aiming to raise funds for buying foods in local markets in his home city of Cali and delivering it to those who are vulnerable and cannot work due to health restrictions. 

He said in a post on Instagram, "In our city, 70 per cent of the population relies on the informal economy and we know that part of the success in the fight against COVID-19 is social isolation.

"In order to guarantee that our people who work in this way can comply, we must guarantee food for them and their families during the days of quarantine.

There are more than 642,000 confirmed cases of COVID-19 worldwide, resulting in the deaths of over 29,000 people.