Stride is part of the pitcher’s ability to use his stance and leg motion during his pitching motion, having the proper stride length reduces this type of stress that you’re gonna put on your shoulder. The stride starts as soon as the pitcher initiates off the instep of his back foot. After the back instep is initiated, the pitcher will simply rhythmically flow down the mound. This smooth descent down the mound should be fluid. No push, jump, hitch or stoppage should happen during this phase of the delivery.