Katsunari Takayama is a Japanese professional boxer. He is a five-time mini-flyweight world champion, having held the WBC title in 2005, the IBF title twice between 2013 and 2015, and the WBO t
Katsunari Takayama is a Japanese professional boxer. He is a five-time mini-flyweight world champion, having held the WBC title in 2005, the IBF title twice between 2013 and 2015, and the WBO title twice between 2014 and 2017.
