No perfect brackets remaining in the Billion Dollar Bracket Challenge

Per Yahoo Sports, there are no longer any perfect brackets remaining in the Billion Dollar Bracket Challenge. 

Though the contest captured the imagination of many seeking fabulous riches, not one single billion-dollar entry was able to escape the round of 64 without picking at least one game incorrectly. Memphis' 71-66 win over George Washington eliminated the final three brackets that were eligible to win $1 billion. So, 25 games into the Round of 64 – or 37.3 percent through the tournament – every single billion-dollar bracket was busted