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Even if you have no idea who Rafa Nadal is, everybody loves Wimbledon!

On the eve of this year’s event, Sue Barker presents a one-off film asking why we’re all so obsessed with the most glamorous grand slam, and talks to legends including Roger Federer, John McEnroe and Martina Navratilova to learn about their Wimbledon highs and lows.

There’s also a review of last year’s tournament on BBC2 (11.05am).