Phil Niekro, Baseball Wiki

Phil Niekro, Hall of Fame Knuckleball Pitcher, Dies at 81 - The New York Times

Baseball Hall of Famer, knuckleballer Phil Niekro dies at 81

Which Braves pitchers have 3000+ strikeouts in their careers? MLB Immaculate Grid Answers September 21

Greg Maddux – Society for American Baseball Research

Phil Niekro, Baseball Wiki

Phil Niekro, Hall of Fame knuckleball pitcher, dies at 81 - The Washington Post

Phil Niekro, Hall of Fame Knuckleball Pitcher, Dies at 81 - The New York Times

Niekro, Phil Baseball Hall of Fame

Niekro, Phil Baseball Hall of Fame

Phil Niekro Cards and Autographed Memorabilia Guide

Why don't more major league pitchers throw the knuckle ball? - Quora