In a T.V. movie the other night a guy told a kid he needed a proper grip to throw the baseball.  That’s true, but the grip he demonstrated was marginal.  So when coaching baseball, I would begin practice, especially with younger players, often with a grip check as described here from the iBook, Practice Baseball to Win. For more information about the lesson plans and drills in the eBook, Practice Baseball to Win, go to practicebaseballtowin.com