For bracket purposes, Thursday served as Day One of the NCAA tournament. So after 16 games, how many of the 5.9 million who are taking part in Tournament Challenge still have a perfect bracket?

That would be 317.

Another 16,958 went 15-1.

Here are the rest of the numbers after one day of Tournament Challenge:

• Five brackets managed to go 0-for-16

• 39 brackets went 1-for-16

• Approximately 4 million out of 5.9 million brackets got 10, 11 or 12 out of 16.

• Only 4.5 percent had Morehead State over Louisville. Of the 5.9 million, 76 percent had Louisville in the Sweet 16.

• 38 percent had Richmond over Vanderbilt, which was the highest percentage to pick a 12-seed over a 5.

• 34 percent of brackets had Gonzaga over St. John's.

• There were 20,821 brackets that had each of the four "underdog" winners -- Morehead State, Gonzaga, Richmond and UCLA (which was a 57%-43% underdog according to our fans). Yet obviously only 317 of them went perfect in the other 12 games.

• President Obama had a strong day, picking 14 of the 16 games correctly for a score of 140 points. He was one of 175,763 to go 14-for-16. That puts him in the 99.7 percentile. Click here to see the President's bracket.

Other notables scores:

Colin Cowherd - 130
Dick Vitale - 120
Snoop Dogg - 120
Michelle Beadle - 110
Mike Greenberg - 110
Matthew Berry - 110
Mike Golic - 90
Michael Wilbon - 90
Tony Kornheiser - 90
Bill Simmons - 70