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Roger Federer - Wikipedia
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Sam Groth Hits 2nd-Fastest Serve Ever at Wimbledon vs. Roger Federer | News, Scores, Highlights, Stats, and Rumors | Bleacher Report
As Roger Federer passes 10,000 aces at Wimbledon, we ask who is the greatest server in tennis history? | The Independent | The Independent
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What is Federer's fastest serve? - Quora
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What made Roger Federer the greatest: The forehand, the serve, the rivalries
Roger Federer disarms Sam Groth to set up US Open third round clash with Marcel Granollers | Tennis News | ESPN.co.uk
Roger Federer faces second-fastest serve in Wimbledon history | Tennis | Sport | Express.co.uk
When Federer Wins The First Point On Serve, It's Usually Game Over | FiveThirtyEight
Brain game: Roger Federer's predictive genius explained | Roger Federer | The Guardian
Roger Federer believes his rejuvenated serve can win him US Open title | Tennis News | Sky Sports
Wimbledon 2015: Sam Groth thunderbolts fail to ruffle imperious Roger Federer | The Independent | The Independent
/https://www.thestar.com/content/dam/thestar/sports/tennis/2012/01/20/roger_federer_rafael_nadal_move_into_fourth_round_at_australian_open/rogerfederer.jpeg "Roger Federer, Rafael Nadal move into fourth round at Australian Open | The Star")
Roger Federer, Rafael Nadal move into fourth round at Australian Open | The Star
Top 10 Fastest Serves in Tennis: All-Time RANKED
Roger Federer: A tennis genius in numbers | CNN
VIDEOS: 7 of the fastest shots ever recorded - Tennis Canada
