I’ve always known the throwing arm/hand to naturally pronate during/after the release of a pitch (fastball). Recently, I had a coach tell me the reason for my son’s so-so outing was because of the pronation of his pitching hand. Of course, I disagreed (nicely, of course). His wife took the picture I’ve attached. C.J. was 10 yrs old in the picture (just turned 11), he’s 4’8″ and weighs about 70 lbs soaking wet. He gets just over 100% stride length, pitches only from the stretch (no leg lift), and I believe he throws hard for his size. He has decent control for his age, but always working to improve. So, I just wanted some feedback on the pronation thing but also another issue, and that has to do with grip. C.J. has very small hands and he does not like to put his thumb directly under the ball. He has a tendency to put it more on the side of the ball. Have you guys experienced your kids/players who are more comfortable doing the same? I’ve left it alone for now; I figure when he grows he’ll be more comfortable gripping the ball underneath it, but I know it is likely taking away from a potential velocity increase. Thoughts? Thanks, Stu Image of C.J. Pitching – Photobucket – Video and Image Hosting
LOL! Pronation is what a coach pinned down as the source of your son’s so-so outing??? Oh my. Your son does what every kid naturally does. For kicks watch the final few frames of almost every MLBer. Any coach without a video camera and a computer on hand at the game is just talking out of his rear. At games, you watch to see if your son is moving smooth and explosively, you look for back leg extension, early hand breaks, position of the head, and whether he sticks the landing. Later, after video taping him, will you sit down and analyze for sure. Pronation, as if it’s bad, oh brother. Going forward, you can just say “I never make any calls on mechanics until I’ve reviewed the video tape frame by frame. To do otherwise is simple guessing.” -scott PS> BTW, your son looks great! Looks like a still from SI.
I agree with Scott: the photo looks great. You can tell he has a long stride, his face is right over his knee, his glove is pulled in tight. Looks good….he wont throw dimes every game, Id love for my 10 year old to have a so so outing! Keep doing what your doing, like Dick says arm action is what it is. Joel
Hey doc, with the older camcorders, you might be able to find a video card that has the yellow RCA video jack. I have an ATI All in Wonder card that I use for my old 8mm tape camcorder. I just use the yellow RCA video cable and connect that to the ATI card (card only cost about $40.00) was able to import video that way. Might be worth a shot anyway. Good luck. Scott
Is it possible that with the thumb on the side of the ball you are causing sidespin in one direction and with the pronation you are causing sidespin in the opposite direction. With the result being the desired tumbling action. Just a thought. Thanks John Perona
If his 4 seamer is doing as you say, again, you are looking good. Thats what they should do. If his 2 seamer has movement, wonderful. Now, Go have fun! Blocked bullpens anyone? -scott
Doc, My son ( 9 ) is not able to position his thumb underneath the ball as well as I would like but – small hands. If fact very few picthers on his team are able to do so and yet we manage to throw strikes and keep the ball low in the zone ( for the most part). I have no idea what pronation of the hand is, I thought it was the natural movement of the hand as the arm comes through in the pitching motion, the same movement that imparts spin on a football when it is thrown. I think you son looks fine, has a long stride, is out over his knee, if anything it seems to me the arm is a little slow coming through and is behind were it might be in relation to the trunk turn or perhaps, looking at the landing foot, the trucnk is turning too early in the delivery ? :confused: Mike
Seems like an odd comment to make, but it could be that the coach didn’t know exactly what words to use in noting that something looked off. I agree with the comments before me, but in looking at the still pic, it does look like something’s off with the pitcher’s hand position. Technically, pronation just means palm facing down. Every fastball and pretty much every pitch has to end that way unless it’s an underhand pitch– which would have the palm facing up (supination). But here, although it’s a little blurry it looks like I’m seeing the back of the pitcher’s hand as he’s coming through. It looks like he’s throwing a screwball. just my 2c. all the best tim
The hand is ok. Shoot and post video some time soon. -scott
Hello All I don’t know what pronate means; but I do know that with the back of the hand facing first base for a right handed pitcher you are imparting spin and reducing velocity. Thanks John
I can tell you from catching him that his pitches have no side spin to them at all. He has a pretty high 3/4 arm slot and his four seamers are all back spin with a lot of pop – although very little movement whatsoever. But I’ll take the lack of movement on his pitches for him consistently painting the outside corner with them any day of the week! Now, he does throw a circle change and that has some different spins to it (mostly drops down) and it is possible he is throwing it in this photo. I’d love to post video of him but I cannot hook up my camcorder to the computer. It’s an older model camcorder that does not have any computer hook-up slots. I once bought an adapter but the computer did not recognize the camcorder at all. I guess I will have to invest in a new one. Does anyone have any thoughts/comments about the issue of grip I originally brought up? Thanks, Stu
I’ve read a couple of articles on the value of pronation, i.e. movement and less stress on the elbow. I’d like to know more about pronation. I am concerned that if you over-pronate you’re throwing a screwball, and causing stress to the young elbow. So any thoughts, such as how to properly pronate, how to teach pronation, the age to teach pronation, and experience good/bad with pronation would be appreciated.
James, If you never heard of pronation you would not need to. The forearm pronates naturally. You do not need to teach pronation. Have you heard me talking about it? Coach Mills
Thanks Coach, I have not.
James, It’s just another thing that does not have to be taught unless it is a real arm action issue.
You must be logged in to reply to this topic.