For years Rubio has been an amateur fighter. He's been training for years in all aspects of fighting. Competing as a boxer and a mixed martial artist. For two years now he's felt as if he's been ready to go pro but his father who has been his coach doesn't want to let him. Recently Rubio reached out to 9th World for a tryout. The guys liked what they saw and decided to take Rubio in. Giving him his chance to become a professional.