[2][3][4] He competed at the 2021 AIBA World Boxing Championships, winning the gold medal in the featherweight division.

[5] Caballero made his professional debut against Jhosman Reyes Gutierrez on 20 May 2022.

He won the fight by a fourth-round knockout.

[6] He would notch two more victories that year, a second-round technical knockout of Pedro Pineda on 29 July and a unanimous decision against Gerson Escobar Romero on 30 October 2022.

[7][8] This biographical article related to a Cuban boxer is a stub.