I'm Fernando from France, today I've serv at 150 km/h, my best service.
That's make 94 miles per hour.
I'm going to make a game, give your age and your (real) speed serv, and we will see who are in the top 10 :
For my its :
Ok I find better than me, but we have to do something with speed and age....
year Speed Mph
11 94 mph
So if I do 94/11 = 8,5 MPH per year
Not bad no ??? Anybody have a better score....