Andy Roddick around 243 Km/hr vs some Thai Player in London.
153mph
The fastest ever serve recorded; 251 Km/h, was by Ivo Karlovic.
Because it is
The tennis service line is located 21 feet from the net on a tennis court.
Rafael Nadal.
echizen ryoma
The speed of the fastest tennis shot ever recorded is 163.7 miles per hour, achieved by Samuel Groth in 2012.
Aaron Savannah
Badminton is... not tennis
I am not sure but just call your local tennis place
Serena Williams Venus Williams
Andy Roddick at 166.3 MPH