only one is if rios beats pac, bellew beating stevenson on a smaller scale would also be an upset.
broner/maidana is a 60/40 fight in broner's favour but i wouldn't be surprised if maidana won.
Pac could be upset if his chin is cracked but I doubt it.
Kovalev/Stevensen could **** up but that is unlikely.
Broner should beat Maidana unless he gets caught.
Can't think of anything that would be considered an upset at the moment lol