Sam Groth - World's FASTEST Tennis Serve Ever! - 263.4 km/h !!!! (163.7 mph) - YouTube
The Fastest Tennis Serves Ever - Perfect Tennis
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Who holds the fastest serve in tennis? | William Hill
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Top 10 Fastest Tennis Serves In the History | Records
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The Fastest Tennis Serves Ever - Perfect Tennis
Top 11 Fastest Tennis Serves (Ever Recorded) in History
The Fastest Tennis Serves Ever - Perfect Tennis
Djokovic Nips Switek as Top '22 Earner With Record $4.74M Payday – Sportico.com
Teddy Tennis London on Twitter: "Samuel Groth of Australia has the World Record of the fastest serve with a service speed of 163.7 mph at the Busan Open #FunFactFriday https://t.co/aAWTpOV77j" / Twitter