TT India open 2017, sakai won Junior first place in this event (U21)
and see the beginning footage, Sakai has fastest serve captured by TT edge channel, I calculated to be about 54 Km/hr, that is very impressive, considering the initial state of the ball is like stationary. Ovtcharov can smash an oncoming ball over 100km/hr, but because ball bounces away from paddle, it is easy to add speed.
The calculation is estimated based on slo mo footage, measuing the time it crosses from one edge to another (table length is 9ft)

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