On November 4th, 2018, just out of the blue, it was announced that Floyd Mayweather would be coming out of retirement but as a mixed-martial artist. But this is not a Rocky Balboa story of the underdog getting his one and only shot in the ring. Tenshin Nasukawa is known as a force to be reckoned with in his home country. After defeating Japan's Rizin Bantamweight Champ by unanimous decision, Tenshin is currently sitting as the Featherweight World Champ.