This fight is easy to see. Rosario is too strong and just knocks him down and out in 2 or 3.. Sort of like Loreto Garza.
Corrales is too easy to hit, but, given the day before weigh ins when he fought, Corrales would also be 2, maybe 3, weight classes larger than Rosario.
I love Chico, and I think he's underrated in mythical matchups, but Rosario is ALLLLLLLLLL wrong for him. Chapo KO 4.