Rizin World Grand Prix 2015: Part 1 - Saraba was an inaugural mixed martial arts event held by the Rizin Fighting Federation on December 29, 2015 at the Saitama Super Arena in Saitama, Japan .
Rizin World Grand Prix 2017: Opening Round - Part 2 was a mixed martial arts event held by the Rizin Fighting Federation on October 15, 2017 at the Marine Messe Fukuoka in Fukuoka, Japan.