Various embodiments provide apparatuses configured for improving a ball throwing technique of a user thereof. The apparatuses generally comprise one or more body portions configured to at least partially surround at least a first portion of an arm of the user, and one or more flexible portions configured to at least partially surround and secure at least a second portion of the arm of the user, the second portion being oppositely positioned relative to the first portion. The apparatuses may further comprise at least one connector element configured to selectively attach the one or more flexible portions to the one or more body portions. Various embodiments still further incorporate a wedge portion that creates a gap between a user's palm and the ball being thrown. Still other embodiments comprise extension and rotation mechanisms for apparatus adjustments. Methods of using the various apparatuses are also provided.