It took about two hours for most of America’s billion-dollar dream to end.

After the first game in the billion-dollar perfect bracket challenge insured by billionaire Warren Buffett, four out of five would-be winners were already finished, thanks to Dayton’s upset of No. 6 seed Ohio State.

On Yahoo’s Tourney Pick ‘Em game, 83.7% of users took the Buckeyes. (Those poolers aren’t necessarily entered in the Quicken Loans Challenge, but any fluctuation would likely be minor.)

Last year, none of the 11 million entrants on ESPN.com were perfect after the first day of games and only four went 15-for-16, so it was a matter of when, not if, most of America busted out. The ending for most just happened to come earlier than anyone expected.

Oh, and not that you need any reminding, but Warren Buffett is a genius.