Undefeated middleweight Marco “El Tiburon” Romero has signed with Premier Boxing Champions, the promotion announced Tuesday. The 20-year-old from Olathe, Kansas, is 14-0 with 12 knockouts and joins the PBC roster alongside unbeaten Colombian super lightweight Carlos Utria. “I’ve always wanted to be on boxing’s biggest cards and I’m super grateful for this opportunity with PBC. Romero built one of the deepest amateur resumes in the country before turning professional in 2024. Romero has ended fights early throughout his career, with 11 of his 12 knockouts coming within three rounds.