Takeshi Yamatori - 1962
Jean Sinclair Taboot - 1990
Evan D. Fleisch - 1996
Samuel Clemens Montesqui - 2002
The Ninjitsu World Series has direct ties to the Yakuza Mafia, and atleast 6 fatalities have been attributed by japanese authorities to the event. Japanese police of chief for Tokya, Yayori Takaro in 1996 called it, "the most dangerous and skilled martial arts tournament of all time". Sources close to the Yakuza Mafia claim the tournament has been going on in secrecy for centuries