In the Stark Arena, Caballero hit with greater precision and always maintained the initiative to beat Armenian Artur Bazeyan 5-0, four judges saw him win by a 30-27 decision and one 29-28.
Tomorrow, the Antillean will face Mexican Miguel Vega for the bronze medal, who beat Congolese Nathan Lunata 5-0.
Then, Brown led the Indian Akash 5-0 (29-28 and 30-27), supported by accurate straight shots that counteracted the speed of the hands and movements of the Asian. For the bronze metal, the Caribbean will face Georgian Lasha Guruli.
For his part, Hernández beat fellow Indian Sumit 5-0 (triple 29-28 and double 30-27) and tomorrow he will fight for the bronze medal against Croatian Gabrijel Veocic.
After losing the opening round, the Cuban increased his attack with hooks to the chin and stomach in the final two rounds to get the win.
The squad of the largest of the Antilles now exhibits a record of 15 wins and two failures, and could reach 16 successes later when the two-time world champion and Olympic star Andy Cruz (63.5 kilos) faces American Vershaun Lee.