What is the main conflict between Antonio and Felix in Amigo Brothers by Piri Thomas

In "Amigo Brothers" by Piri Thomas, two best friends (Antonio and Felix) who are part of a poor neighbourhood in New York City share the same passion: boxing. The main conflict of this story appears when they have to fight against each other for the Golden Gloves, a title that would give them access to a professional career in the sport. With this in mind, they decide to train separatedly so as to prepare physically and psychologically, since each one of them would have to face a tremendous situation.