Rodrigo Romero, the protagonist of the film, is not a professional actor; he instead worked as a bricklayer. He got to know about the casting for the film through Facebook and, being a big fan of "El Potro", sent his photo to the filmmakers. He couldn't believe it when he was chosen for the lead character.
Rodrigo's family made public accusations to this movie because it shows Rodrigo doing hard drugs in many scenes, which they deemed as inaccurate to the true story.
Rodrigo Bueno, "El Potro", died at 27, thus, joining the infamous Club 27 and becoming another example of how many artists die at that age.