Kate Middleton is a sporty person and it looks like she's passed that onto Prince George ! On Thursday The Duchess of Cambridge visited the ladies' semi-finals day at Wimbledon Serena Williams ! She got to take a snap with the tennis superstar. Apparently while chatting with former British tennis pro Greg Rusedski , she revealed that Prince George is a little player himself. Middleton was not with her family for the appearance in which she greeted all the ball boy and girls.