Tennis fan Prince George may be only five years old but the Duchess of Cambridge has revealed her son has already faced one of the greats of the sport, Roger Federer.
Kate's admission was aptly made at Wimbledon when she spent Tuesday touring the famous tennis championships and watched Federer in action.
While sitting on an outside court with sportswoman Katie Boulter, who is not competing at Wimbledon because of an on-going back injury, and former tennis player Anne Keothavong, she talked about her son's interest in the sport, according to the show Wimbledon Coffee Morning.
It is broadcast on the tournament's social media and Keothavong, who retired from tennis some years ago, was quizzed about her time spent with Kate by reporter Adam Hunt.
He told the show: "Anne was just saying, 'What a special day' – and (Kate) is such a good ambassador for tennis.
"She comes to Wimbledon every year, she really likes tennis, she was talking about George, apparently.
"George's favourite tennis player is Roger Federer, and he's actually got to play with him.
"The whole family loves tennis, and George is apparently quite a good player."
Kate, who is a passionate tennis fan, is patron of the All England Lawn Tennis and Croquet Club (AELTC), the organisation which stages Wimbledon.
She has been a regular guest at Wimbledon since making her first visit as a member of the royal family in 2011.
Last year the duchess joined a tennis training session at a primary school in Mitcham, south London, and joked at the time how she was less "sporty" now she has children.
The youngsters at Bond Primary were receiving training sessions under the Wimbledon Junior Tennis Initiative, the outreach programme of the All England Club.
The duchess told the children: "I love tennis, I think it's a great sport.
"I was really sporty when I was little, less so now that I've got lots of babies."