Roger Federer says he will be donating $500,000 (£379,223) to help children affected by the war in Ukraine.
Since Russia invaded Ukraine last month, more than three million people, many of them children, have fled the country according to the United Nations (UN).
Former world tennis number one Federer will be donating the money through his foundation.
“My family and I are horrified seeing pictures from Ukraine and heartbroken for the innocent people who have been so terribly affected. We stand for peace,” the 40-year-old Swiss player wrote on Twitter.
“We will provide assistance to children from Ukraine who need care, about six million Ukrainian children are currently out of school and we know it’s a very critical time to provide access to education and would like to support them to deal with this extremely traumatic experience.”
Federer is the latest person from the world of sport to pledge money to help those affected by the conflict and Unicef, the UN’s children’s charity, says such acts are helping to make a difference with aid efforts for those affected.