CASon went to a camp at a school he's not interested in academically a couple weeks ago. We just wanted to get him a chance to face some hitters. It turned out they did evaluations. We got back the evaluation and it was fairly accurate overall. He didn't try to throw hard at the camp and worked on his location and his change.
The interesting thing was that the coach doing the eval's wasn't using a gun. He insisted that he didn't need one. The only problem was that when the evaluation came back it was pretty obvious he hadn't even realized that CASon was throwing any changeups. In fact they never even mentioned the change in the eval and only mentioned the curve which he only threw 3 of and called it his off speed pitch. CASon's arm action is identical to that of his fastball on his change and not surprisingly as a result he throws a relatively firm circle change with only about a 6 mph differential. It is easy to spot with a gun but not so easy for hitters to pick up. Personally, I haven't a clue if he's throwing a fastball or a change except for a bit more movement on the change unless I have a gun.
I've seen several college coaches claim that they don't need guns to tell velocity. The pitching coach from Pepperdine did pretty well when I checked his estimates at a scout ball game. Another coach I talked to at a showcase who said he didn't need a gun was 4 to 5 mph off on the high side on one kid. Interestingly, the kid he was guessing about tops out at about 80, works in the upper 70s and has committed to a major D1. Wonder if they used a gun?
I was at a college camp about a year and a half ago and a group of us were sitting by the head coach who was gunning the pitchers. The pitcher had been throwing 80-82 and the coach asked us to guess the speed of a pitch. We all guessed right around 82. He showed us the gun and it was 86. The kid repeated that pattern a couple times so the 86 was legit.
My experience is that a whippy arm action and an aggressive push add velocity in people's minds and long arm action subtracts velocity in people's minds.
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