World Boxing Federation
Sung-Young Yang
WBF Fights
Asia Pacific Super Bantamweight Title (Vacant): October 19 / 2019, Gyeongju-si, South Korea.
Sung-Young Yang TKO 8 Fan Cai
Referee: Wang Jue (South Korea). Judge: Man-Deuk Kwon (South Korea): 67 - 66. Judge: Joong-Sook Kwon (South Korea): 69 - 66. Judge: Sung-Choi Jo (South Korea): 70 - 67.
Promoter: Howon Kwang