What's the bigger upset?
Pac or Floyd being TKO'd?
I say Pac getting beaten by Barrera is the biggest shocker. Boxing fans know Barrera has been on a slight decline since that TKO loss to Pac. This would be a huge accomplishment in beaten the man who took his crown. With Pac's status in the East a loss like this would turn their world upside down.
Floyd losing would appear to be a bigger upset since he is often recognized as the P4P king between him and Pac but.. MAB and Hatton are at two different points in their careers.