jorge lasierva is a former bantamweight title holder. with his father, jorge senior, and his son alexis, he trains aspiring fighters in this gym in the santa anita neighborhood of mexico city. he knows these young men, like generations of boxers everywhere from other neighborhoods like this, are looking for a way out. >> in mexico city boxing is kind of like save a life. you know what i mean? boxing they give them a little discipline. >> let's say you're good but you're not that good. can you make a living just being a contender? >> no, but a lot of fighters, they try to make it. tons of boxers. they want to be a champion. >> everybody wants to be a champion. >> everybody. everybody wants to get to the big shot.