Every year, FOX Bracket Challenge players are full of hope and optimism as the first NCAA Tournament game tips off Thursday afternoon. For some, brackets begin to turn red as soon as Game 1 comes to a close. Others hold out longer, but it’s inevitable that the perfect brackets we envision will not materialize. This year, some FOX brackets remained perfect through 20 games. None survived the 21st, however. No. 15 Middle Tennessee’s upset of No. 2 Michigan State dashed the pursuit of perfection for the remaining holdouts. View the timeline below to see how each game impacted the number of remaining perfect brackets.