Ruiz later worked for his father in construction for a time before deciding to become a full-time boxer and starting his amateur career in Mexico. Ruiz had a passion for baseball before his father got him into boxing he has noted that his first fight was at age seven in San Diego. His father is a former construction worker who started his own business flipping houses. Ruiz was born in Imperial, California his parents had emigrated from Mexico to the U.S. He is a former unified heavyweight world champion, having defeated Anthony Joshua to win the WBA (Super), IBF, WBO, and IBO titles in 2019 to become the first male boxer of Mexican heritage to win a world heavyweight championship.Īs of June 2023, he is ranked as the world's fifth-best active heavyweight by ESPN, fourth by the Transnational Boxing Rankings Board and BoxRec, and sixth by The Ring magazine. (born September 11, 1989) is an American professional boxer of Mexican descent.