When you look at some of the biggest upsets of all time.... were they really that shocking in hindsight? Like, did Ronda Rousey really ever have a chance against a world class boxer and kickboxer in Holly Holm? Of course it's not true of all upsets. Matt Serra probably would have lost 9 times out of 10 to GSP, but he did manage at least this one time. So these are the fights where it's only shocking at the time, but now is pretty obvious when you have it all framed properly.