I have an uncle that played in the minor leagues and he told a story today about meeting and learning from Phil Niekro. He said it was A ball in Tampa and that he had a teammate, a lefty that was trying to develop a knuckleball and one of their coaches called in a favor and Niekro came in to check on him and offer some pointers. My uncle sat in because, while he had a fastball and a curve, he lacked a change up to throw off hitters. At the end of the “clinic”, my uncle had developed himself a knuckleball/change up to add to his arsenal.