Career
Rivera had a Draw in his professional debut on January 1, 1993 versus Cachorron Diaz (0-0) in Mexico. Rivera got his first title fight on November 22, 1996 versus
Luis Alejandro Ugalde (7-0) in Tijuana, Mexico for the Baja California State Light Welterweight Title, winning by point in 12 rounds.
In his career that spanned since January 1993, Cosme has fought many popular fighters like Alfredo Angulo (18-1), Ricky Quiles (28-4-1), Diosbelys Hurtado (30-2-1), Juan Carlos Rodriguez (36-16-2), Arturo Morua (15-1-1), Hicklet Lau (17-6-2), Wilfredo Negron (20-6-0), Gilberto Reyes (18-2-1), Felix Flores (22-4-0), Joel Julio (27-1-0), & Andre Berto (18-0-0).
