Conventional Pitching Mechanics has been under attack sense the beginning of digital science. With affordable high speed cameras and 3D motion capture, the digital eye has been disapproving conventional wisdom for the past decade or more. A good example would be the old saying, “Thumb to thigh, ball to sky.” This conventional coaching tip has been proven to cause injury with some pitchers because it forces the throwing shoulder to break the “Acromial Plane,” which can cause an impingement of the rotator cuff.
My question is what conventional coaching tips for pitching still prove successful today?