In this Nov. 1, 2018, photo, sumo wrestler Takanoiwa, right, works out in a morning practice ahead of a tournament in Fukuoka, western Japan. The Mongolian wrestler has decided to retire after assaulting a younger wrestler during the ongoing regional tour in the latest blow to Japan's national sport.(Kyodo News via AP)
In this Nov. 1, 2018, photo, sumo wrestler Takanoiwa, right, works out in a morning practice ahead of a tournament in Fukuoka, western Japan. The Mongolian wrestler has decided to retire after assaulting a younger wrestler during the ongoing regional tour in the latest blow to Japan's national sport.(Kyodo News via AP) AP
In this Nov. 1, 2018, photo, sumo wrestler Takanoiwa, right, works out in a morning practice ahead of a tournament in Fukuoka, western Japan. The Mongolian wrestler has decided to retire after assaulting a younger wrestler during the ongoing regional tour in the latest blow to Japan's national sport.(Kyodo News via AP) AP