It was to have been headlined by Ryan Bader making his promotional debut and looking to claim heavyweight gold. In the wake of Bader withdrawing due to injury, however, RIZIN’s annual New Year’s Eve show, the promotion’s 10th Anniversary, still featured a full five title fights.
Among those, a headlining bout featuring Mikuru Asakura (brother of UFC’s Kai Asakura), oooking to claim featherweight gold opposite champ Razhabali Shaydullaev. In the co-headliner, long-serving lightweight champ Roberto “Satoshi” de Souza put his belt on the line against Ilkhom Nozimov. RIZIN’s flyweight grand prix wrapped with the vacant title on the line between TUF vet Hiromasa Ougikubo and Yuki Motoya, while Bellator motormouth Danny Sabatello looked to claim bantamweight gold against champion Naoki Inoue.
Rounding out the five-pack of title fights, undefeated super atomweight champ Seika Izawa faced off against Rena Kubota.
Where to Watch RIZIN Super Powerhouse Festival
December 31, 2025 was the landing spot for RIZIN’s 10th Anniversary show, taking place at the Saitama Super Arena in Saitama, Japan. The event is available to stream via RIZIN.tv; full results can be found below. The broadcast goes live at 11PM ET, 8PM PT.
