This chapter analyses stablemasters’ roles in accepting foreign wrestlers and innovation mechanisms. In the 1960s, Hawaiian-born Takamiyama’s recruitment opened pathways for foreign wrestlers. However, stable masters accepting foreign wrestlers were initially a minority. These masters were ‘entrepreneurial’ figures challenging sumo world’s traditional norms. Masters like Maedayama sought talent overseas, transcending existing networks. This corresponds to Schumpeter’s ‘creative destruction’ concept. Minority masters’ innovative actions prompted transformation throughout the sumo world. Foreign wrestler networks expanded to Mongolia and Europe, becoming a global talent supply system. Data analysis reveals specific masters specialized in recruiting from particular regions, demonstrating that individual master characteristics and strategies were crucial for overseas network construction. In the traditional sumo world, masters’ roles as innovators were key to transformation. The chapter illustrates how entrepreneurial individuals within traditional institutions can drive systemic change, offering insights into innovation processes in conservative organizational environments and the role of social entrepreneurs.