Yes vd he has shown he has chin problems but when your head isn't in a fight like it clearly wasn't and katsidis is a relentless come forward fighter, your going to get knocked the fuck out inevitably. Khan can be seen as chinny but he does what he needs to do for that weakness isnt exploited and I think Mitchell has the ability to do that too. He's capable of wars, as shown against Johanneson and Murray he can definatley can take a punch. If Mitchell has ANY chance, he really needs to put on a boxing clinic. Does he do that? Unlikely against such a strong bull like Rios. IMO Rios will knockout out
Mitchell, because he will knock out any 135 fighter and that won't be down to Mitchells chin its just nobody would be able to stand up if they are taking flush power shots from Rios.