After a wild day of the NCAA tournament, just 273 out of 11.57 million Tournament Challenge brackets were a perfect 16-for-16 on Thursday. In comparison, there were 18,471 perfect brackets out of just more than 11 million on the first Thursday last year.

Another 7,802 brackets went 15-for-16 on Thursday. On the other end of the spectrum, there were 2 brackets that go no games correct on Thursday.

The twin upsets by 14-seeds Georgia State Panthers over the Baylor Bears and the UAB Blazers over the Iowa State Cyclones really shook up the brackets. A later win by 11-seed UCLA Bruins over 6-seed SMU Mustangs added to the bracket-busting fun, while the evening games provided a bunch of almost upsets that didn't quite break brackets.

Here are some notable numbers from today's upsets:

14-seed UAB over Iowa State

5.1 percent of brackets had UAB winning, second-fewest among 14-seeds (the Northeastern Huskies, which nearly upset the Notre Dame Fighting Irish, were the least popular 14-seed picked to win in the round of 64).

16.3 percent of brackets had Iowa State in the Final Four; 1.6 percent had the Cyclones winning it all.

President Obama had Iowa State reaching the Elite Eight.

14-seed Georgia State over Baylor

8.4 percent of brackets had Georgia State winning, the most among the 14-seeds.

5.1 percent of brackets had Baylor reaching the Final Four; 69 percent to the Sweet 16 (including President Obama).

1.9 percent of brackets picked both UAB and Georgia State to win in the round of 64.

11-seed UCLA over 6-seed SMU

31.5 percent of brackets had UCLA winning, second-fewest among 11-seeds.

2.7 percent of brackets have UCLA facing UAB in the round of 32 (7.7 percent have UCLA in the Sweet 16; 1.7 percent have UAB).

1.3 percent of brackets had the combination of UAB, Georgia State and UCLA winning.

Other "upset" notes:

10-seed Ohio State Buckeyes were actually picked in 57.4 percent of brackets to beat 7-seed VCU Rams.

8-seed Cincinnati Bearcats was only picked in 47.3 percent of brackets to beat 9-seed Purdue Boilermakers.

Close but no cigar (percentage of brackets picking Thursday's almost upsets):

4.5 percent had 14-seed Northeastern over 3-seed Notre Dame.

10.1 percent had 13-seed Harvard over 4-seed North Carolina.

18.1 percent had 12-seed Wofford over 5-seed Arkansas.

29.4 percent had 12-seed Stephen F. Austin over the 5-seed Utah (and 12.9 percent into the Sweet 16).

Other fun facts:

92,190 brackets (0.8 percent) picked the Texas teams to go 0-5 Thursday (i.e. picked the combination of Butler, UCLA, Arizona, Utah and Georgia State to win)

70,634 brackets (0.6 percent) picked the Big 12 teams to go 0-3 Thursday (i.e. picked Georgia State, UAB and Butler)

15.9 percent picked all three Ohio schools to win Thursday (Xavier, Cincinnati, Ohio State).

34 percent picked all four Big East schools to win Thursday (Villanova, Georgetown, Butler, Xavier).

President Obama's bracket got off to a slow start, missing 5 of the first 8 games, only getting Notre Dame, Arizona and Ohio State correct. But he recovered by getting all eight evening games correct (including his national championship pick of Kentucky) and finished Thursday with a 11-5 record, landing in the 72.9 percentile.

Overall, the better seeds went 12-4 on Thursday. The all-chalk bracket would land you in the 92.2 percentile.

Looking ahead to Friday's games: