We’re midway through Friday’s action in the second round of the NCAA Tournament, which means that 24 of the 32 games have been completed. Despite not one of today’s contests having resulted in an upset, we’re down to just 24 perfect brackets in ESPN’s challenge. For reference, there were only 273 perfect brackets entering the day after Thursday’s insanity.On ESPN’s website, there are only 22 perfect brackets listed. Of those, the champion breakdown is as follows: Kentucky with eight, Arizona with five, Duke with three, Wisconsin with two, Villanova with two, Notre Dame with one and Georgetown with one. There were 11.57 million brackets submitted this year.After 24 games played, just 24 perfect brackets remain in ESPN’s Tournament Challenge, out of 11.57 million. That’s 0.0002 percent.— SportsCenter (@SportsCenter) March 20, 2015Will anyone make it through the day?