Rizin 51: Souza vs. Horie is an upcoming Combat sport event held by Rizin Fighting Federation on September 28, 2025, at the Aichi International Arena in Nagoya, Japan.
Fight Card
Main Card
Lightweight 71 kg Brazil Roberto de Souza (c) vs. Japan Yoshinori Horie Lightweight Championship
Featherweight 66 kg Kyrgyzstan Razhabali Shaydullaev (c) vs. Russia Viktor Kolesnik Featherweight Championship
Heavyweight 120 kg Poland Marek Samociuk vs. Russia Alexander Soldatkin 2025 Rizin Heavyweight Grand Prix Final
Bantamweight 61 kg Japan Shoko Sato vs. United States Danny Sabatello
Bantamweight 61 kg Japan Genji Umeno vs. Japan Ryusei Ashizawa
Featherweight 66 kg Japan Hiroaki Suzuki vs. China Yuele Huang
Featherweight 66 kg Japan Tetsuya Yamato vs. Japan Takahiro Okuyama
Featherweight 66 kg Japan Ryo Takagi vs. Japan Kisa Miyake
Flyweight 57 kg Japan Daichi Tomizawa vs. Japan Joe Hiramoto
Catchweight 100 kg Japan Kosuke Kindaichi vs. Senegal Thiatou Bambilor
Lightweight 71 kg Japan Yusuke Yachi vs. Japan Bilal Kai Haga
Opening Ceremony
Rizin MMA Special Rules (5min / 2R)
Featherweight 66 kg Japan Yuhei Tsuda vs. Japan Jin Wakita
Lightweight 71 kg Japan Shogo Ota vs. Japan Kosuke Sugimura
Bantamweight 61 kg Japan Mahiro Yamaki vs. Japan Kushi Ishizaka
Flyweight 57 kg Japan Syuto Sato vs. Japan Daisuke Kobayashi
Background
A Rizin Lightweight Championship bout between current champion Roberto de Souza and Yoshinori Horie is scheduled to headline the event.
A Rizin Featherweight Championship bout between current champion Razhabali Shaydullaev and Viktor Kolesnik is scheduled to serve as the co-main event.
On August 1, 2025, it got announced that Shunta Nomura is not medically cleared to compete in September after his win over Patricky Pitbull at Super Rizin 4. Therefore, Yoshinori Horie will compete against Roberto de Souza for the belt.
Rizin 51 - Souza vs. Horie Trailer
