quote:IMHO, it's one thing to teach it and another thing to verify your pitchers are, in fact, throwing it properly. Slo-mo video is about the only way since the transition of the throwing arm from external rotation to internal rotation - which is the part you need to see to verify proper technique - happens faster than the naked eye can see (well, at my naked eyes).
Roger Tomas,
Instead of the slomo video, what about watching arm action and the end result (break of the pitch)? While I'm a far cry from being a pitching coach I did teach my son to properly throw the curve ball and he had some success using the CB as his out pitch without experiencing any arm problems.