This is a video clip I can't embed here but you might want to take a look at it. It's the ninth inning and Detroit Tigers pitcher Armando Galarraga is one out away from pitching a perfect game. Cleveland Indian Jason Donald hits a grounder and first baseman Miguel Cabrera fields it while Galarraga runs to cover first.
Cabrera throws to Galarraga who steps on the bag an instant before Donald gets there. But umpire Jim Joyce blows the call, thereby costing Galarraga his perfect game. (He retired the next batter so he won with a one-hitter. But that's not even close to a no-hitter.) Joyce later admits he was wrong but that's how it goes in baseball.
Let's go to the videotape…