7. Don Denkingerp 

The 1985 World Series, dubbed the I-70 Showdown Series between the St. Louis Cardinals and Kansas City Royals goes down for the infamous missed call by 1st base umpire Don Denkinger.

In the 9th inning of Game 6 and the Cardinals clinging to a 1-0 lead, Jorge Orta’s infield single was fielded properly by the Cardinals, and though replays show Orta was indeed out, Denkinger had ruled him safe. The blown call at first base allowed Jorge Orta’s in-field single to stand, but more importantly it allowed the Royals to score two runs in the bottom of the ninth and force the decisive Game 7.

Which of course the Kansas City Royals won. Manager Whitey Herzog of the St. Louis Cardinals had since said he wished he had gotten commissioner Peter Ueberroth to reverse the call and declare Orta out.