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Video: Roger Federer celebrates Wimbledon win - I don't know what I did last night

Roger Federer admits he woke up with a sore head after celebrating a record eighth Wimbledon triumph until 5am on Monday morning.

The 35-year-old also warned the game's younger generation they need to vary their style if they want to stop the old-guard toasting more grand slam successes in the future.

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