Game Changers: 18 Most Controversial Referee Calls that Altered the Course of Battle
The Perfect Game That Wasn't (2010

In a 2010 game between the Detroit Tigers and the Cleveland Indians, pitcher Armando Galarraga was one out away from a perfect game when a controversial call by the umpire cost him his place in history. The call, which replays showed was incorrect, sparked significant controversy and led to calls for the use of instant replay in baseball.