Mexican fighters are historically expected to have two things if nothing else: a great chin and plenty of fighting spirit.
Guerrero has these attributes in droves. His chin held up exceptionally well even as he went up in weight class. His last fight against Andre Berto (28-2, 22 KO) showed just how well his chin could hold up.
Guerrero doesn't stop fighting from opening to closing bell. He's relentless, but he's not reckless. Every punch has purpose, a target and a wicked intent to hurt.
When the HBO documentary, 24/7 begins to highlight just how tenacious Guerrero can be in the ring, clips of his recent fights will show a determination that will make audiences want to see more.
The iconic image of the Mexican-American who will not back down from a challenge has sold fights for decades and made heroes out of Julio Cesar Chavez and Oscar De La Hoya. Now it's Guerrero's turn.