Cuba national baseball team
Martínez began his professional career in the Cuban National Series from 2012 through 2017, playing for Guantánamo, Isla de la Juventud, and Camagüey. In 2016, Martínez played for the Cuba national baseball team when they played 20 games in the Can-Am League. He played for the Trois-Rivières Aigles in the Can-Am League in 2017. In November 2017, Martínez defected from Cuba.