New documentary traces the long and erratic history of the knuckleball

This classic sports story recounts the 2011 journey of the last professional knuckleball pitchers: Tim Wakefield, a 17-year Red Sox veteran, and Mets up-and-comer R.A. Dickey. Together with just four other living knuckleballers, they shine a light on their remarkable brotherhood and the shared pursuit of honor and craftsmanship.