Princeton Tigers head coach Mitch Henderson. Kelley L Cox-USA TODAY Sports

The Princeton Tigers on Thursday pulled off one of the biggest upsets of the NCAA Tournament, and they busted a ton of brackets in the process.

Princeton, the 15-seed in the South Region, beat 2-seed Arizona 59-55 in the first round of the Big Dance. Arizona was 28-6 and had just won the Pac-12 Tournament, making Princeton’s upset even more impressive. But there are plenty of people not too happy with the upset — and we’re not talking just about Arizona fans.

Princeton’s upset alone knocked out 93 percent of the remaining perfect brackets on ESPN at the time of their win.

Only 0.12 percent of brackets on the NCAA’s website remained perfect after the Princeton win.

If you saw the Ivy League team throwing it back to 1996 with a huge upset of a Pac-10 team, congratulations — you are one of the few. In case you forgot, 13-seed Princeton took out 4-seed UCLA in that 1996 tournament. 

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