deaths
August 20, 1854
Shiranui Dakuemon, Japanese sumo wrestler, the 8th Yokozuna (born 1801)

Shiranui Dakuemon
Shiranui Dakuemon was a Japanese sumo wrestler from Uto, Higo Province. He was the sport's 8th yokozuna, and is the only yokozuna in history to have been demoted.
Makuuchi
Makuuchi (幕内), or makunouchi (幕の内), is the top division of the six divisions of professional sumo. Its size is fixed at 42 wrestlers (rikishi), ordered into five ranks according to their ability as defined by their performance in previous tournaments.