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Copyright All England Club

Taking on Alexandr Dolgopolov in the first round of Wimbledon, Roger Federer reached another huge career milestone. The Swiss hit his 10,000 ace in the first set. It's lucky he got it done as Dolgolopov retired in the second set, propelling Federer to the second round.

WATCH: At Wimbledon, Roger Federer hits his 10,000th career ace

WATCH: At Wimbledon, Roger Federer hits his 10,000th career ace

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