高田延彦
On September 19, 2015 during , it was announced that Sakakibara had signed former Pride Heavyweight Champion Fedor Emelianenko to headline a New Year's Eve Show in Tokyo for his new MMA promotion. Sakakibara held a press conference on October 8, 2015 with Nobuhiko Takada and other former Pride FC employees to formally announce the launch of Rizin Fighting Federation. Initial signees included Kazushi Sakuraba, Shinya Aoki, as well as female competitors Gabi Garcia and RENA.