Robert Joseph Guerrerois an American professional boxer. He is a former two-weight world champion, having held the IBF featherweight and junior lightweight titles; he is also a former WBA and WBO interim lightweight and WBC interim welterweight champion. Guerrero is trained by his father Ruben Guerrero, a former amateur champion, who introduced Robert and his five brothers to boxing as youngsters growing up in Gilroy, California...
(wikipedia)