Juntaro Ushiku defeated Yutaka Saito by TKO in round 2 (4:26) in the Featherweight title main event of RIZIN 31, held Sunday, October 24, 2021 at Pia Arena MM, Yokohama.
RIZIN 31 was an MMA event from RIZIN Fighting Federation, held Sunday, October 24, 2021 at Pia Arena MM, Yokohama, Japan. A championship title was on the line. 31 is part of RIZIN's numbered event series. 9 fights took place on the card.
