UPDATE 9:52 P.M.: With Memphis’s win over George Washington, there are now zero perfect brackets left.


When Warren Buffett teamed with Quicken Loans to offer $1 billion to the college basketball couch guru with a perfect bracket, more than 11 million fans took a shot. As of 4:30 pm Friday, only 16 of them were still intact. ESPN’s bracket challenge had just  18,741 perfect picks after Thursday and 2,185 after Mercer knocked off Duke. According to Darren Rovell of ESPN, if Eastern Kentucky beats Kansas, Buffett will be off the hook:


The owners of the 20 most accurate brackets by the end of the tournament will receive a $100,000 prize from Buffett. No word on what the 12 people who got zero of Thursday’s games right.

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