Head to Head
| Japan T League | 2021/10/23 06:00 | Tomokazu Harimoto v Koki Niwa | W | 3-0 |
| World Cup | 2019/11/30 10:15 | Tomokazu Harimoto v Koki Niwa | W | 4-3 |
| T2 Diamond | 2019/11/23 12:00 | Koki Niwa v Tomokazu Harimoto | W | 2-4 |
| Qatar Open XD | 2017/06/24 07:30 | Tomokazu Harimoto v Koki Niwa | W | 4-0 |