With care and affection, that is to say with the pulse with which we must tell the stories that matter, this book imbues us fully in the life of Kid Tunero (1910-1992), also known as "the gentleman of the ring", the "World champion without crown" or "man with one blow". But more than the biography of a single man, we are dealing with the story of an entire era: an important moment in the history of boxing in the twentieth century, with its part in pugilistic spectacle and its counterpart in the fight against racism. And in the background, the drawing of the boxing atmosphere of Barcelona and other points of the peninsula, as well as Cuba and France. Kid Tunero, the knight of the ring contains more than just a sports story. And it is also something more than the story of who was the preparer of the world champions José Legrá and Alfredo Evangelista: it is the portrait of the human quality of its protagonist. The words of the writer Ernest Hemingway - who felt for his friend Kid Tunero a special love - make it clear: "Kid Tunero is for me the most complete athlete Cuba has given. One day I will say why. Also, if there are still knights on Earth, Tunero is one of them. Straight, laconic, simple; It is simple and pure like bread, like gold. "