Viktor Troicki
Serbian Viktor Troicki got the world’s attention at the Kremlin Cup in 2010 when he won his first ATP title. In 2015 and 2016, he won his second and third ATP titles at the Apia International Sydney. He also impressed the world at the 2017 Davis Cup when served a ball at 233 km/h (145 mph).
Viktor Troicki
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Naomi Osaka
Tied with Lucie Hradecká of the Czech Republic as the 10th fastest female tennis server, Japanese star Naomi Osaka served at 201.2 km/h (125.0 mph) at the 2016 US Open. Osaka however claims the rank of 9th since she made the feat before her Czech counterpart.
Naomi Osaka
