Phil Niekro, Hall of Fame Knuckleball Pitcher, Dies at 81 - The New York Times
Notable Knuckleballers - Sports Illustrated
24 Knuckleball Grip Photos & High Res Pictures - Getty Images
Notable Knuckleballers - Sports Illustrated
Griffin Jax, relief weapon? Minnesota Twins Analysis - Twinkie Town
Braves legend Phil Niekro dead at 81
R.A. Dickey shares his unlikely success story
Hall of Fame pitcher Phil Niekro dies at 81
In this crazy year of COVID, a knuckleball makes perfect sense
Trade deadline roundup: Broxton deal is best of the rest - Sports Illustrated