In 1954, General Pichai of Thailand invited Fleischer as a special guest to his homeland, as a way to ensure that the world championship bout between world Bantamweight champion Jimmy Carruthers of Australia and challenger Chamroen Songkitrat would follow the international boxing rules.
National Boxing Association World Bantamweight champion Robert Cohen refused to defend his title against Macías, so the NBA decided to declare the title vacant and have Macias and Chamroen Songkitrat fight for the championship.