Roger Federer beat Jay Clarke in three sets and then described how he recently played with another British youngster - Prince George.
The Duchess of Cambridge watched Federer at Wimbledon on Tuesday and then revealed that not only is the Swiss superstar her son's favourite player, but that the five-year-old has hit balls with tennis royalty.
Following his 6-1 7-6 (3) 6-2 victory over 20-year-old Clarke, eight-time winner Federer said: "At that stage it's all about just touching the ball, it's the same with my boys.
"I think I have a little advantage that I actually spent some time with him. So maybe I'm the only player he's ever met. Then you have a little head start into who is your favourite player.
"He's a cute boy. I love to see that they're into tennis or into sport. His mum has always enjoyed tennis.
"I hope that he'll still say the same in a few years' time and this is not just an in-the-moment situation that he said 'oh, he's a good guy'."
Clarke will have taken hope from the fact Federer, who is 17 years older than him, dropped a set in his first-round match against Lloyd Harris.
However, Federer was not going to make the same mistake twice and breezed through the first set. Clarke did respond in the second, but that only fired Federer up and who raised his game to claim the set.
The end was near when Federer took a 3-0 advantage in the third and, although Clarke held serve a couple more times, the 20-time grand-slam champion eased to victory.
On Clarke's performance, Federer said: "I sensed he was a bit nervous in the beginning. Then in the second set, I think he did very well to stay with me. Every time he got a little bit close on his service games, he was able to produce something special.
"I hope he keeps working hard and results will show how good he is."