"They say I'm too small. They say I don't have the skills. They say I don't stand a chance. I'm Robert Guerrero, WBC welterweight interim champion of the world. They call me 'The Ghost.'
"It means a lot being a Mexican-American family. In my family, it's tradition. My father was a fighter, my grandfather was a fighter, I have older brothers that are fighters. Me, I fight because it's a privilege, it's an honor, it's what I do, it's what I love to do. It's what I've done since I was a kid.
"Every time I get in that ring, I have that drive, I have that mental focus to get out there and just get it.
"Floyd Mayweather, he is pound-for-pound the king of boxing, so it's my job to dethrone him. And I honestly feel this is a modern day David and Goliath, where everyone is saying Floyd Mayweather's unstoppable. He's the best fighter ever, and no one can beat him.
"I'm in that position, like Buster Douglas. In boxing, some people show up to fight, some don't. I'm one of those guys like Buster Douglas, where I'm gonna show up and fight. I'm gonna take him out, just like Buster Douglas did Mike Tyson."