. >> early thursday morning in the coachella valley, a few miles from the bois and girls club, joelle diaz begins his day. >> the ranch is a get away place for me. it's the place where i come and just concentrate, focus. when i come to the ranch, i'm here by myself. that's what i like to do. it's my -- my pressure time. >> diaz spent most of his childhood on a farm like this in mexico where his grandparents lived before coming to california when he was 12. soon, he discovered boxing, eventually turning pro, and fighting his way to a title shot in 1996. >> i fought at 135 pounds. i was a lightweight. one day in the sparring session, i was sparring a kid that was heavy. i remember that day. he hit me hard, but he hit me on top of the head. i got out of the gym that day, i'm walking home, and i noticed something was wrong. i noticed my vision was getting worse and worse, but i never told anybody. then here comes my world championship fight. i got the opportunity to fight for the world title in johannesburg, south africa. i lost a decision to philip holiday. it was a very bad moment for m

. ♪ >> in southern california's coachella valley, on the corner of grand and date avs, you'll find theal boys and girls club. training headquarters of boxer timothy bradley. the 28-year-old learned to box in nearby palm springs. but has trained here with only the most essential of personnel his entire pro career and he's changed nothing for his biggest bout yet agnst manny pacquiao on june 9. >> my team, that's all i need. >> another unvarying presence is trainer joel diaz. the pair's relationship began at the start of bradley's pro career in 2004. its success can be measured in the form of 28 straight victories without a loss. >> he has had a big impact on my career. because when i first went to him, i had to start from scratch. he's like -- almost like a big brother to me, and he makes me believe everything he says. he told me that i was going to make it to this point. he told me that i'm going to win this fight. >> timmy works really, really hard. he has that determination that there's no limit. he comes to the gym, he's in work mode. >> bradley is by every measure the underdog agai