Roger Federer took some time out over Easter to cheer up some sick kids at a children's hospital in Basel.
The Swiss great has seen a remarkable resurgence on the court in 2017, but he's also doing some incredible work off it.
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With some help from Swiss chocolatier Lindt, Federer surprised kids at the children's hospital in his home town with some delicious Easter treats.
As you can see in the video above, the kids were absolutely rapt to meet the Swiss Maestro and hang out with him for the day.
Lindt organised special Easter events in 10 children's hospital across Switzerland, raising $74,000 dollars for charity.
Federer is well known for his charity work with children. He started the Roger Federer Foundation over a decade ago, aiming to provide childhood education for families in need.
He recently teamed up with Andy Murray for the Match for Africa 3, raising about $1.8 million from tickets sales for his foundation.
The World No.4 will play Match for Africa 4 on April 29 in Seattle with John Isner and Bill Gates.
"I think that earning so much and being so popular, you can have a role in charity also as a tennis player, helping other people like the one I am helping in my foundation," Federer said recently.
"If I can help in something for a good cause, I am there and it's only a matter of time.
"Doing charity makes me feel better. I can inspire and motivate a lot of people and generate much money. For Match for Africa (against Andy Murray) all the tickets were sold and we almost earned $2 million.
"It's obviously incredible, because with so much money you can do a lot in some places helping even more kids.'
The 35-year-old is off to a flying 19-1 start in 2017 after winning 11 consecutive matches, including three titles at the Australian Open, Indian Wells and Miami Open.
However he has admitted he may not participate in the French Open as he contemplates skipping the clay court season altogether.
"I will decide whether to switch to clay or not on May 10," the 18-time Grand Slam champion said on Monday.
"We will sit and speak about it: will we skip the clay season? Or it's better not to do it?
"Until then I will practice on hard. I will compete only when I'm ready and motivated."