Everitt worked the 2003 National League Championship Series and was the left field umpire during Game 6, in which Chicago Cubs fan Steve Bartman arguably prevented Cubs left fielder Moisés Alou from catching a foul pop up hit by Florida Marlins second baseman Luis Castillo. Everitt ruled that the ball would have landed in the stands without Bartman's interference, and therefore Castillo was not out. Alou and Mark Prior vehemently protested the call to no avail and the Marlins proceeded to score 8 runs to win Game 6 and later the series.