Rizin World Grand Prix 2015: Part 2 - Iza was a mixed martial arts event held by the Rizin Fighting Federation on December 31, 2015 at the Saitama Super Arena in Saitama, Japan .
Rizin World Grand Prix 2015: Part 2 - Iza was a mixed martial arts event held by the Rizin Fighting Federation on December 31, 2015 at the Saitama Super Arena in Saitama, Japan .
