Andy Roddick 153 mph June 11 2004
The fastest ever serve recorded; 251 Km/h, was by Ivo Karlovic.
Jai-alai
The fastest recorded speed for a ball in competition is 131 mph (211 km/h) from a tennis serve hit by Samuel Groth in 2012.
The speed of the fastest tennis shot ever recorded is 163.7 miles per hour, achieved by Samuel Groth in 2012.
It is hard to determine what the average speed of a tennis serve is from various players, but Sam Qurrey is among the fastest serves of all time. He has recorded a serve of 141 miles per hour at multiple events.
The fastest volleyball serve ever recorded was made by György Grozer, a Hungarian volleyball player, with a speed of 134 km/h (83.5 mph) during a match.
The fastest non-mechanized sport in the world is ski racing or speed skiing. Second would be a tennis serve. The speeds reached in speed skiing are approximately 162 mph, and 262 kph
The fastest handwriting speed ever recorded by an individual is 350 words per minute.
It depends on how hard you want to hit the ball
Milos Raonic...with a serving speed of 225km/h
75.2 metres/sec = 75.2 x 3600 met/hr = 75.2 x 3.6 km/hr ie 270.72 km/hr
75 mph