Roger Federer and Rafael Nadal play the Match in Africa 6 in front of a record crowd inside South Africa's Cape Town Stadium.

Roger Federer, Nick Kyrgios, Naomi Osaka, Alexander Zverev, Dominic Thiem, Serena Williams, Caroline Wozniacki, Petra Kvitova, Coco Gauff, Novak Djokovic, Stefanos Tsitsipas and Rafael Nadal take part in Rally For Relief on Wednesday night.

Bob Bryan, Tommy Haas, Mark Knowles, Arantxa Sanchez Vicario, Andy Roddick, Coco Gauff and James Blake come together to raise funds for Hurricane Dorian relief efforts at the Baha Mar Cup.

Footballer Luka Modric and Marin Cilic entertain the crowd at Cilic's charity event.

The Andy Roddick Foundation has raised more than $20 million since 2000.

Hans Podlipnik-Castillo spends time with children of Futuros para el Tenis in September 2018.

Sebastien Grosjean, Tennys Sandgren, Michael Kosta, Kevin Anderson, Shelby Rogers and Eugenie Bouchard help raise money at Kevin Anderson's Grand Slam Cause for the Paws.

Tennys Sandgren, Kevin Anderson, Bob Bryan and Mike Bryan help raise more than $100,000 for charity.

Nick Kyrgios meets Loga Gandhi, her father Pari Gandhi, mother Sankari Kalaiselvan and brother Aylione Gandhi in Canberra on Saturday.

Top seed Juan Martin del Potro, a contender for the Nitto ATP Finals, attends a China Open charity event in Beijing.

Andy Roddick participates in the Dirk Nowitzki Pro Celebrity Tennis Classic for the third consecutive year.

Former ATP World Tour players Andy Roddick, Mark Knowles, Tommy Haas and Taylor Dent, along with current player Mitchell Krueger, help Dirk Nowitzki raise money for his foundation.

Jamie Cerretani joins Leander Paes in speaking with local children during the ATP Tour 250 event in Newport in 2018.

#NextGenATP Canadian Denis Shapovalov and Hungarian Zsombor Piros assist at kids' day at the Gazprom Hungarian Open on Wednesday.

David Massey (centre), Executive Vice President of ATP Europe, presents an ATP ACES for Charity cheque to Academia Champs founder Antonio Champalimaud and Tournament Director Joao Zilhao in Estoril.

Roger Federer works with local partners in Zambia and elsewhere around the world to improve children's lives.

ATP World Tour veteran Aisam-Ul-Haq Qureshi makes time to give back in Uganda through his 'Stop War Start Tennis' foundation.

Nick Kyrgios joins other ATP World Tour stars and the Marjory Stoneman Douglas tennis teams ahead of his second round match in Miami to honour the victims of a shooting in February.

"Had an amazing time with the kids from Marjory Stoneman Douglas honouring the survivors of the horrific shootings, and remembering those that were taken,' Kyrgios said.

Nick Kyrgios spends time at practice with players from the Marjory Stoneman Douglas High School tennis team at the Miami Open presented by Itau.

Hans Podlipnik-Castillo supports Futuros para el Tenis in Chile.

Boston Celtics star Gordan Hayward and Australian Nick Kyrgios spend time with players from the Stoneman Douglas High School tennis teams on Sunday at Crandon Park.

Nick Kyrgios founded his NK Foundation to provide sporting opportunities for underprivileged youth.