May 18, 2004: Randy Johnson pitches a perfect game at age 40
Randy Johnson inducted into Baseball Hall of Fame: Arizona Diamondbacks will retire his number - Sports Illustrated
The Randy Johnson Perfect Game - AZ Snake Pit
June 4, 2009: Randy Johnson wins his 300th career game – Society for American Baseball Research
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Randy Johnson's perfect game - Wikipedia
Smallthoughts: Old School Tuesday…Randy Johnson – smallthoughtsinasportsworld
Randy Johnson throws perfect game at age 40, 12 years ago today
Johnson perfect at age 40
Johnson perfect at age 40
On This Date in 2004, Randy Johnson Brought “Big Unit Energy” to the Mound and Pitched a Perfect Game
This Day in Sports History: Randy Johnson Throws a Perfect Game - Sports Illustrated
I was an MLB legend and pitched a perfect game – but I quit to take up a job I love even more
Who are the 24 MLB pitchers who have thrown a perfect game?
Diamond Backs vs Braves 5/18/2004 (Randy Johnson's perfect game)
Randy Johnson, Baseball Wiki