thats probably the first fight that came to mind after watching rios last night, hard to tell but right now i think kats would win on sheer experience. put rios in with a big name lightweight and we can gauge if he's reday for the likes of a pitbull like kats. i can tell you one thing though, he'd punch a hole in mitchells face though lol.
Rios vs Mitchell would be legalized murder. Rios vs Soto is prob next. And Rios will def win that fight IMO.