It has now been almost a year since tennis legend Roger Federer announced an emotional farewell to the sport after 24 years on the professional scene.

The 41-year-old Swiss may no longer play himself, but he is passing on his experience and skills to the next generation of Federers. All four of his children – his twin daughters and twin sons – play tennis up to four times a week.

“I’m not the coach, I am the dad and the dad’s advice, as we know, only goes so far. It doesn’t matter if you’ve won Wimbledon or not, you’re still the dad and sometimes they don’t want to hear what you have to say,” Federer told CNN.

“I try to be funny, but at the same time I also try to be straight sometimes and just teach them. I come in more, I guess, as a technical coach so I try to teach them about all the tennis rackets.”

The eight-time Wimbledon champion emphasizes that he does not push any of his children to play and prefers to remain in the background. However, his twin sons, Lenny and Leo, are the ones displaying a particular interest in the sport.