Marco Antonio Barrera against: Super flyweight (115lb): Julio Cesar Martinez, Carlos Cuadras, Juan Francisco Estrada. Super Bantamweight (122lb): Luis Nery, Julio Ceja, Rey Vargas. Featherweight (126lb): Leo Santa Cruz, Mauricio Lara, Emmanuel Navarrete. Super Featherweight (130lb): Francisco Vargas, Miguel Berchelt, Oscar Valdez. Lightweight (135lb): William Zepeda, Isaac Cruz.
Taking each fight as an individual entity, he should have a great chance but that would be a tough run to do a clean sweep in. That's a lot of fights at a lot of weights against a lot of styles.
It’s a murders row in contemporary times, but none of them have a record as great as MAB’s. Really the only thing I could see stopping MAB from being the favorite is getting shot along the way.