Prince William and Kate Middleton, who will marry this Friday, play mixed doubles at The Queen's Club (the site of the pre-Wimbledon ATP tournament) against Kate's sister Pippa, a Queen's Club member, and another friend, FOXSPORTS reports.

"Kate was a surprise," the site quoted another member saying. "I thought with all her sporty, boarding school background she'd be rather good, but she was a bit hit and miss. She reminded me of Princess Diana. Mind you, she was better than William, who was very wooden. Still, there was no bickering between them."—Matthew Cronin