June 13, 2003: Clemens reaches 300 wins and 4,000 strikeouts at Yankee Stadium – Society for American Baseball Research
Phil Niekro's legacy with Braves filled with innings, wins, relationships - The Athletic
Obituary: Phil Niekro (1939-2020) – RIP Baseball
Phil Niekro, Baseball Hall of Famer and knuckleballer for Atlanta Braves, dies at 81
Remembering Phil Niekro: 1939-2020 - Cooperstown Cred
Arraez, McNeil win batting titles, Judge misses Triple Crown
Yankees Hall of Famer Phil Niekro passes away at 81
HOFers Mike Mussina And Roy Halladay Set New Standard For Cooperstown-Worthy Starting Pitchers
Phil Niekro, Hall of Fame pitcher and knuckleball master, dies at 81
The Late Phil Niekro Caught Blue Jays Off Guard In Winning No. 300 — Inside the Seams
Phil Niekro Memorabilia, Autographed Phil Niekro Collectibles
KNUCKSIE HASN'T LOST HIS GRIP - Sports Illustrated Vault
Arraez, McNeil win batting titles, Judge misses Triple Crown
Phil Niekro, Hall of Fame knuckleball pitcher, dies at 81 - The Washington Post
The oldest Yankees' players in history by position - Pinstripe Alley