RIZIN Fighting Federation’s annual New Year’s Eve show has been officially announced, with the RIZIN Super Powerhouse Festival set for the Saitama Super Arena in Saitama, Japan on December 31, 2025.
Included will be a full six title fights, including the debut of Ryan Bader (31-8), who will face Aleksandr Soldatkin (18-4) for the promotion’s heavyweight title. Bader, a former Bellator double champ at light heavyweight and heavyweight, will be facing one of the toughest heavyweights outside the UFC, with Soldatkin’s lone loss since 2019 being a DQ for an illegal knee on the Contender Series. Soldatkin is 3-0 under the RIZIN banner to date, and won the promotion’s heavyweight grand prix in September.
Razhabali Shaidulloev (16-0), the promotion’s undefeated featherweight champ, will face Mikuru Asakura (19-5), brother of UFC flyweight title challenger and ex-RIZIN champ Kai Asakura, in the night’s main event. Roberto “Satoshi” de Souza (20-3), meanwhile, will be looking to make the sixth defense of his lightweight title when he takes on Shunta Nomura (10-2).
Women’s super atomweight gold will be on the line when Seika Izawa (17-0), who defended her title earlier this month at RIZIN Landmark 12, faces off against the popular Rena Kubota (15-5). UFC alum Naoki Inoue (20-4) will put his bantamweight belt on the line against former Bellator MMA motormouth Danny Sabatello (16-4-1), while a flyweight title fight sees former Ultimate Fighter hopeful Hiromasa Ougikubo (29-8-2) take on Yuki Motoya (39-14) for the vacant RIZIN 125lb strap.
In a final fight announced on Sunday via press release, Yutaka Saito (21-9-2) faces kickboxer Ren Sugiyama (2-2) in featherweight action.
