A pitcher's hands are a subject that doesn't receive much attention from baseball coaches. The reason why is because many coaches do not understand the purpose of the hands. The lack of knowledge in this area has lead to many bad habits brought upon by poor coaching. Its time to get all the information out there and give the players and coaches reading this a heads up.
After the initial hand split the hand path will begin. The single most important concept of starting the hand path is to use the shoulders. By concentrating on the shoulder to rotate the arms into position, it will be much more efficient and quicker. It isn't the hands that are moving, its the shoulders that are moving the hands. The hand path will create the bottom half of a semi circle made by the glove and ball. Eventually the circle will be completed as the shoulder rotates on top to throw. If the shoulders are being utilized correctly, it should keep the hands from dropping too far below the waist. As long as the arm stays light through this process, there should be no injury problems.
A fun and simple way to feel the rotation of the shoulder is to play catch with the football. It is a great tool for shoulder rotation and developing a compact hand path.
It is important to be aware of the red flags when working on hands as well: