Perfection Game - Entertainment Earth
In MLB, if a pitcher has a perfect game but the score is 0-0 and in extra innings a runner is out on 2nd base, would he still have a perfect game?
How to Fix Your Gamerscore Using TrueAchievements
Perfect game (baseball) - Wikipedia
Gopherwood Studios Blog: Perfect Score in Entanglement!
MLB Nears 10 Years Without a Perfect Game - The New York Times
How to Fix Your Gamerscore Using TrueAchievements
Domingo Germán achieves 24th perfect game in MLB history, giving Yankees most ever with four
High school softball pitcher throws perfect perfect game
MLB Perfect Games