![Serena Williams of the U.S. serve speed of 207 km per hour (129 mph) is seen behind Ayumi Morita of Japan during their women's singles match at the Australian Open tennis tournament Serena Williams of the U.S. serve speed of 207 km per hour (129 mph) is seen behind Ayumi Morita of Japan during their women's singles match at the Australian Open tennis tournament](https://c8.alamy.com/comp/2CXARJK/serena-williams-of-the-us-serve-speed-of-207-km-per-hour-129-mph-is-seen-behind-ayumi-morita-of-japan-during-their-womens-singles-match-at-the-australian-open-tennis-tournament-in-melbourne-january-19-2013-reutersdavid-gray-australia-tags-sport-tennis-tpx-images-of-the-day-2CXARJK.jpg)
Serena Williams of the U.S. serve speed of 207 km per hour (129 mph) is seen behind Ayumi Morita of Japan during their women's singles match at the Australian Open tennis tournament
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Amazon.com : TGU Tennis Radar Guns Speed Sensors (Hands-Free) - Measure Serve, Racquet & Ball Speed, High Tech Gadget & Gear for Tennis Players, Black (NIS022132026) : Sports & Outdoors
![Tennis TV on Twitter: "111 MPH 😳 When @Taylor_Fritz97 unloads 💥 #MiamiOpen https://t.co/Cmf63Xn7oY" / Twitter Tennis TV on Twitter: "111 MPH 😳 When @Taylor_Fritz97 unloads 💥 #MiamiOpen https://t.co/Cmf63Xn7oY" / Twitter](https://pbs.twimg.com/media/FOzX6CWXsAEnYku.jpg)
Tennis TV on Twitter: "111 MPH 😳 When @Taylor_Fritz97 unloads 💥 #MiamiOpen https://t.co/Cmf63Xn7oY" / Twitter
![Tennis: Serve Harder Training Program Manual by Joseph Correa: Serve 10 to 20 mph faster!: Correa, Joseph: 9781482039320: Amazon.com: Books Tennis: Serve Harder Training Program Manual by Joseph Correa: Serve 10 to 20 mph faster!: Correa, Joseph: 9781482039320: Amazon.com: Books](https://m.media-amazon.com/images/I/61D7nqcKUAL._AC_SY780_.jpg)
Tennis: Serve Harder Training Program Manual by Joseph Correa: Serve 10 to 20 mph faster!: Correa, Joseph: 9781482039320: Amazon.com: Books
![What It's Like to Face a 150 M.P.H. Tennis Serve (Published 2015) | Tennis serve, Tennis, Tennis workout What It's Like to Face a 150 M.P.H. Tennis Serve (Published 2015) | Tennis serve, Tennis, Tennis workout](https://i.pinimg.com/originals/34/98/5f/34985fe4f24395eef11cf7e08f534d11.png)