What four contest matches are on the Contest Upsets Mount Rushmore?

Board 8

Or to simplify, I'd basically call a match where 10% of all brackets and 90% of B8 got right an upset. But a match where 90% of brackets and 10% of B8 get right? That's just us wildly missing the mark and is the furthest thing of one.

Best matches usually have both.
The King Wang.
Listen up Urinal Cake. I already have something that tells me if I'm too drunk when I pee on it: My friends. - Colbert.