I actually may go for Cayo in this fight, for me peterson has 2 losses on his record and he's lucky he didnt face Khan before. I think Peterson will start strong, but Cayo will end it better and get the decision.
Peterson's consistency will be more effective. He has the tighter defense. Cayo has good defensive movement, but his guard sucks and his offense is inferior, so I go with Peterson. (Though a real good night from Cayo and a bad one from Peterson could close the chances-gap between the two, and that's happened before.)
I think Peterson will win a UD with Cayo scaring him from time to time. Cayo is an exciting fighter with power but i think he can be boxed outside by Peterson successfully.
Cayo needs this and knows it. Peterson seems to get hurt every time I see him since after I first caught him with that featherfisted French guy. Cayo by kayo.