Beyond the main event and Grand Prix, RIZIN 54 featured several other impressive finishes. Li Kaiwen defeated Arata Mizuno by TKO in the first round after Mizuno was hit by an elbow during a clinch and then a left hook. Naoki secured a TKO victory over Issei Hosokawa in the second round, dominating with right low kicks, straight punches, and elbows that crushed Hosokawa's left eye.
Jyo Hiramoto scored his first career KO win, finishing Jolly with a left straight followed by a right hook in just over a minute of the first round. Joji Goto submitted Temirov with a rear-naked choke in the first round after hurting him with a left tenkao and a left straight.
Koji Takeda surprised many by submitting Kazunori Majima with an armbar from the bottom in the first round. Finally, Yuki Ito stopped Alibek Gajiev with standing strikes in the second round after grinding him down with an Anaconda choke.