Juntaro Ushiku defeated Yutaka Saito by TKO in round 2 (4:26) in the Featherweight main event of Rizin FF - Rizin 31, held Sunday, October 24, 2021 at Pia Arena MM, Yokohama.
Rizin FF - Rizin 31 is an MMA event from RIZIN Fighting Federation, scheduled for Sunday, October 24, 2021 at Pia Arena MM, Yokohama, Japan. 9 fights are scheduled across the card.
