Roger That: Federer's Kids Are Playing Tennis

The ATP World Tour has been put on notice: Roger Federer’s sons are playing tennis.

"They're only four, yes, but they've played for a few years now," Federer told CNN Sport of his twin sons Leo and Lenny. "We roll the ball and hit it along the ground. The ball can bounce a bit more and they can whack it over the net sometimes."

But don’t forget, Federer has four children. The 37-year-old Swiss star has another set of twins, daughters Charlene and Myla, who are nine.

"The girls also play a little bit," Federer told CNN Sport. "Actually we like them to play a bit because all the friends we have and their kiddies, they all play tennis and it would be a shame if my kids are the only ones who wouldn't play tennis.”

Now imagine that — out of an entire group of friends, Federer’s children not playing tennis. That won’t be happening, though, according to the six-time Nitto ATP Finals champion.

"I want them to do sports because I think it's a great education, it's good to be out there and healthy,” Federer told CNN Sport.

It’s safe to say the Federer children have a pretty good coach in their corner.