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.

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.

During Game 4 of the 2009 World Series, between the New York Yankees and the Philadelphia Phillies, Pedro Feliz hit a two-out single with Ryan Howard on second.

On August 20, 2013, after the Boston Red Sox lost to the San Francisco Giants on a walk-off walk to batter Marco Scutaro, Red Sox starting pitcher Jake Peavy openly criticized plate umpire Everitt, stating, "The last pitch [called ball four] was a strike...At the end of the day, for an umpire not to make the call to cost us a game, that's extremely unfortunate."

[6] On June 30, 2016, in a game versus the St. Louis Cardinals at Busch Stadium, Everitt permitted the Kansas City Royals to challenge a double-play call at first base despite both teams having returned to their dugouts.

[7] On August 27, 2016, in a game between the Los Angeles Angels and Detroit Tigers at Comerica Park, Everitt made several contested strike calls against Detroit hitters, resulting in the eventual ejection of Tigers designated hitter Victor Martinez, Manager Brad Ausmus, and Hitting Coach Wally Joyner, and right fielder J. D. Martinez in three separate incidents.