Book excerpt: The knuckleball—so difficult to hit but also difficult to control and catch—has been a part of major league baseball since the early 1900s and continues to be used to this day. This remarkable and unusual pitch is the instrument of a special breed of pitcher, a determined athlete possessing tremendous concentration, self confidence, and a willingness to weather all kinds of adversity. In The Knuckleball Club: The Extraordinary Men Who Mastered Baseball's Most Difficult Pitch, Richard A. Johnson provides an informal history of the wildest, weirdest, most mesmerizing pitch of all time. Beginning with an examination of the invention of the knuckleball, Johnson then briefly touches upon the science and psychology of the pitch before profiling the game’s great knuckleballers. Rich in anecdotes and interviews, this book shares the unique stories of Hoyt Wilhelm, Phil Niekro, Jim Bouton, Tom Candiotti, Tim Wakefield, R.A. Dickey, and many others. Also featured are the stories of the best knuckleball catchers, from Bob Uecker and Doug Mirabelli to Rick Ferrell and Paul Richards. While knuckleballers today are an anomaly, decades ago a surprisingly large number of major league pitchers used the knuckler. The Knuckleball Club is the first book to provide a comprehensive survey of the pitch and the players who used it, offering a deep understanding of how the knuckleball has fit into the fabric of the game over the past one hundred years. Anyone wanting to learn more about this unusual pitch, from baseball historians and fans to current and former players, will find this book an entertaining and enlightening read.