On January 14, 2004, Warrior's Boxing Promotions announced that they had signed Santos to exclusively acquire the rights to promote the fights where he performed. At the moment of the announcement Santos said that he expected to have a productive business relationship with the promotion, and highlighted the company's organization, he said: "I am very impressed with the Warriors organization and believe that they will provide me with the platform to show the world that I am truly one of the best champions competing today."
On January 14, 2004, Warrior's Boxing Promotions signed Santos for exclusive rights to promote his fights. Santos expressed confidence in their organization and its ability to showcase his skills as a top-tier fighter.