Face à face
| Japon - T League | 2020/12/10 04:30 | Hiroto Shinozuka v Koki Niwa | W | 1-3 |
Home History
| Japon - T League | 2023/02/04 05:15 | Koki Niwa v Kakeru Sone | W | 3-2 |
| Japon - T League | 2023/01/09 04:50 | Koki Niwa v Matsushima Teruzora | L | 1-3 |
| WTT Contender Almaty | 2022/09/16 11:30 | Koki Niwa v Yuanyu Chen | L | 1-3 |
| WTT Contender Almaty | 2022/09/15 13:45 | Koki Niwa v Cheng-Ting Liao | W | 3-1 |
| WTT Contender Muscat | 2022/09/07 15:30 | Benedikt Duda v Koki Niwa | L | 3-2 |
| WTT Contender Tunis | 2022/08/04 15:00 | Gaoyuan Lin v Koki Niwa | L | 3-0 |
| WTT Contender Tunis | 2022/08/03 15:30 | Koki Niwa v Jaehyun An | W | 3-1 |
| WTT Contender Tunis Quals | 2022/08/02 18:30 | Sun, W. v Koki Niwa | W | 1-3 |
Away History
| Japon - T League | 2022/12/16 11:20 | Ryoichi Yoshiyama v Hiroto Shinozuka | W | 1-3 |
| Japon - T League | 2022/11/20 08:31 | Hiroto Shinozuka v Taimu Arinobu | W | 3-0 |
| WTT Contender Novo Gorica | 2022/11/06 14:45 | Darko Jorgic v Hiroto Shinozuka | W | 3-4 |
| WTT Contender Novo Gorica | 2022/11/05 16:45 | Mizuki Oikawa v Hiroto Shinozuka | W | 3-4 |
| WTT Contender Novo Gorica | 2022/11/05 09:40 | Sangsu Lee v Hiroto Shinozuka | W | 1-3 |
| WTT Contender Novo Gorica | 2022/11/04 16:55 | Iulian Chirita v Hiroto Shinozuka | W | 2-3 |
| WTT Contender Novo Gorica | 2022/11/03 19:05 | Hiroto Shinozuka v Kristian Karlsson | W | 3-1 |
| WTT Contender Almaty | 2022/09/17 13:45 | Ruwen Filus v Hiroto Shinozuka | L | 4-3 |