The same day the king-at-arms and herald announced to Quiñones that a gentleman named Vasco de Barrionuevo, servant of Ruy Diaz de Mendoza, mayor-domo of the king, had come to make trial of his arms, but as he was not a knight he prayed Quiñones to confer that honor on him. Quiñones consented, and commanded him to wait at the entrance of the lists, whither he and the nine defenders went on foot accompanied by a great crowd. Quiñones asked Vasco if he desired to become a knight, and on his answering in the affirmative he drew his gilt sword and said, "Sir, do you promise to keep and guard all the things appertaining to the noble order of chivalry, and to die rather than fail in any one of them?" He swore that he would do so, and Quiñones, striking him on the helmet with his naked sword, said, "God make thee a good knight and aid thee to live and act as every good knight should do!" After this ceremony the new knight entered the lists with Pedro de los Rios, and they ran seven courses and broke three lances.
On the festival of St. James (July 25th) Quiñones entered the lists without three of the principal pieces of his armor--namely, the visor of his helmet, the left vantbrace and breastplate--and said, "Knights and judges of this Passo Honroso, inasmuch as I announced through Monreal, the king's herald, that on St. James's Day there would be in this place three knights, each without a piece of his armor, and each ready to run two courses with every knight who should present himself that day, know, therefore, that I, Suero de Quiñones, alone am those three knights, and am prepared to accomplish what I proclaimed." The judges after a short deliberation answered that they had no authority to permit him to risk his life in manifest opposition to the regulations which he had sworn to obey, and declared him under arrest, and forbade all jousting that day, as it was Sunday and the festival of St. James. Quiñones felt greatly grieved at their decision, and told them that "in the service of his lady he had gone into battle against the Moors in the kingdom of Granada with his right arm bared, and God had preserved him, and would do so now." The judges, however, were inflexible and refused to hear him.