Niigata International Open Jiu Jitsu Championship 2025 Male White Master 30 Light Feather 5 Mins ~64.0kg 4 1 / 1 Division Max Weight Time Competitors Brackets Final JPN Hamamuki Ryo Braves Jiu-jitsu JPN Satou Seiya Renatus Bjj Fight 35 Mat 1 29 Jun 3:53AM JPN Miyazawa Kazuaki Newaza World Nora Jiu-j.. JPN Minagawa Masaki Sai-gym Fight 36 Mat 1 29 Jun 13:20PM Hamamuki Ryo Braves Jiu-jitsu Miyazawa Kazuaki Newaza World Nora Jiu-j.. JPN JPN Fight 39 Mat 1 29 Jun 4:21AM Hamamuki Ryo Braves Jiu-jitsu JPN