Wait until it stops rolling”: The uncertain origin of the knuckleball - Pinstripe Alley
Knuckleball - Wikipedia
The Knuckleball Can Devastate, So Why Don't All Pitchers Throw It? : The Two-Way : NPR
The Majesty of the Knuckleball – Wondergressive
Phil Niekro, Hall of Fame Knuckleball Pitcher, Dies at 81 - The New York Times
With Phil Niekro's Death, Baseball Has Lost the Knuckleball and Its Master - The New York Times
Toad Ramsey invented the knuckleball
Tim Wakefield and the Glory of the Knuckleball
Knuckleball: The History of the Unhittable Pitch: 9781613217665: Freedman, Lew: Books
Knuckleball: The History of the Unhittable Pitch
2012 Cy Young winner R.A. Dickey thinks knuckeballers could still succeed in the majors
Matt Waldron Brought the Knuckleball Back to the Majors
The Knuckleball Suite
Bochy: Facing the knuckleball is 'a big adjustment' – KNBR
Become a KNUCKLEBALL PRO with these tips