Ha So Baek TKO7 Riku Kunimoto... The Asian middleweight scene took an unexpected turn this Sunday following a dominant performance by Mongolia's Ha So Baek, who was crowned the new OPBF middleweight champion despite a reported record of just 5-2. In the main event of the card presented by MUTO Promotions at the Sumiyoshi Kumin Center, Baek pulled off an upset by stopping the now former champion, Riku Kunimoto of Japan. Kunimoto (15-2) attempted to assert his home-ring advantage and pace from the opening bell, but he was met by a Mongolian challenger determined to make history. The climax arrived in the seventh round when a precise offensive surge from Baek halted the action at the 2:30 mark, forcing referee Nobuto Ikehara to declare a TKO.