How you use your hips is SUCH a big part of pitching Not only as you come off the rubber, but also in power K and delivery Many pitchers have been taught to stay all the way open when they deliver, but this creates a great loss of speed and command. The arm generally will get stuck behind the body But you also don’t want to slam your hips and shoulders shut at the same time We want to feel hip and torso rotation during delivery. This helps maintain our posture, drive through toe and knee positio