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NCAA tournament's early upsets lead to busted brackets

NCAA tournament's early upsets lead to busted brackets
Dayton players celebrate after their 60-59 victory over Ohio State on Thursday. (Elsa / Getty Images)

Busting most of the nation's NCAA tournament brackets took all of one game.

When 11th-seed Dayton beat sixth-seed Ohio State on Thursday with a basket in the final seconds, the upset upended the elusive hope millions had to complete a perfect bracket.

Of the 11.01 million brackets submitted in ESPN's contest, 80.3% picked Ohio State to beat Dayton. The number of entries, incidentally, zoomed up from last year's 8.15 million. 

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The numbers weren't any better in Yahoo's Tourney Pick'em, where 83.7% of entries went with Ohio State.

The chances of picking a perfect bracket weren't good to begin with. There are 9,223,372,036,854,775,808 possible combinations. That's 9.2 quintillion. Taking into account basic knowledge about the tournament -- like No. 16 seeds not beating top seeds -- one DePaul mathematics professor estimated the odds at a more reasonable one in 128 billion.

The tournament, though, isn't forgiving.

Harvard's upset of Cincinnati later Thursday left 5.7% of ESPN's brackets perfect.

And the games are just getting started.

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Twitter: @nathanfenno

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