Jiri Prochazka defeated Jake Heun by TKO in round 1 (4:29) in the Light Heavyweight main event of RIZIN 13, held Sunday, September 30, 2018 at Saitama Super Arena, Saitama.
RIZIN 13 was an MMA event from RIZIN Fighting Federation, held Sunday, September 30, 2018 at Saitama Super Arena, Saitama, Japan. 13 is part of RIZIN's numbered event series. 10 fights took place on the card.