Shinobu Ota

Rizin 26 – Saitama was a combat sport event held by Rizin Fighting Federation on December 31, 2020 at the Saitama Super Arena in Saitama, Japan.

RIZIN 41 was a combat sports event that took place on Saturday, April 29, 2023 at the Yoyogi National Stadium in Shibuya, Tokyo, Japan.

Bellator MMA x Rizin 2 and Super Rizin 2 was a mixed martial arts event being co-promoted by Bellator MMA and the Rizin Fighting Federation that took place on July 30, 2023, at the Saitama Super Arena in Saitama, Japan. A Bellator Lightweight World Grand Prix quarterfinal bout between former Bellator Featherweight Champion A. J. McKee and former Bellator Lightweight Champion Patricky Pitbull was scheduled to headline the event. However, on July 26, it was announced McKee had pulled out of the bout due to medical issues and was replaced by current Rizin Lightweight Champion Roberto de Souza at a catchweight of 161 pounds.[

RIZIN 45 was a mixed martial arts event that took place on Sunday, December 31, 2023 at the Saitama Super Arena in Saitama, Japan.