Fastest recorded speed of tennis ball?

Answer 1

My favorite way is to tape several sheets of graph paper on a big cardboard piece for a background (with marks measuring the height from the bouncing spot in a few places), and put a video recorder on a short tripod at about the height the ball will bounce (practice bounces are usually acceptable). Before we could afford video recorders, I had to watch very carefully and try to mark the spot where I saw the ball go. I found out I was not very accurate. Keep in mind things like parallax (if I'm standing too high and looking down on the ball, I end up marking a different spot on the paper than when my eye is level with the ball at that height), how far the ball is from the paper, where the ball is being released from, is there an initial downward force, and how fast the ball is moving. There are a few other things that affect accuracy that I don't remember offhand.

Answer 2

163.4mph (263km/h). Recorded by Samuel Groth in Busan during an ATP Challenger match

Answer 3

the max speed ever was by colin Johnson in 1935 and it was 214 mph hope this helps

Answer 4

U need to put a valve in the ball, then measure the air pressure with an air pressure gauge.