Head to Head
| Japan T League | 2020/12/10 04:30 | Hiroto Shinozuka v Koki Niwa | W | 1-3 |
Home History
| 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 | Wen Sun v Koki Niwa | W | 1-3 |
| WTT Contender Tunis Quals | 2022/08/02 14:00 | Yuta Tanaka v Koki Niwa | W | 1-3 |
| WTT Star Contender Budapest Quals | 2022/07/11 10:40 | Cheng-Ting Liao v Koki Niwa | L | 3-2 |
Away History
| 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 |
| WTT Contender Almaty | 2022/09/17 06:00 | Hiroto Shinozuka v Yuanyu Chen | W | 3-1 |
| WTT Contender Almaty | 2022/09/16 12:40 | Hiroto Shinozuka v Yang Wang | W | 3-1 |