Rising fastball

[NIump50]

Originally Posted by SanDiegoSteve

SA,

I was being facetious (or sarcastic, I can't tell which) when I said that, because I don't believe that a pitch loses 9% of its velocity in 60 feet. I think a pitch released at 90 mph arrives at the plate at 90 mph. I was just trying to find a speed of a pitch you couldn't hit at your advanced state of decomposition.

I can't prove it with the law of physics, but last year during winter practice they put a gun on my son, aimed near the release point, and clocked him at 75-77 on his fastball. And no it wasn't rising.
When we pointed the gun nearer the catcher he was clocking at 73-75.
Very unscientific, but I think the ball loses some velocity, certainly not 9%.