| J2 League 2021 - Appearances as Assistant | ||||
| 28/02/2021 | Tochigi SC | - | Fagiano Okayama | 0:2 |
| 17/07/2021 | Tochigi SC | - | Ventforet Kofu | 0:1 |
| 30/10/2021 | RB Omiya Ardija | - | Júbilo Iwata | 1:2 |
| 05/12/2021 | Matsumoto Yamaga | - | V-Varen Nagasaki | 1:2 |
| J2 League 2021 - Appearances as Assistant | ||||
| 28/02/2021 | Tochigi SC | - | Fagiano Okayama | 0:2 |
| 17/07/2021 | Tochigi SC | - | Ventforet Kofu | 0:1 |
| 30/10/2021 | RB Omiya Ardija | - | Júbilo Iwata | 1:2 |
| 05/12/2021 | Matsumoto Yamaga | - | V-Varen Nagasaki | 1:2 |
| Complete name: | Soichi Iwasaki |
| Born: | 30/11/1987 |
| Place of birth: |
Japan |
| Nationality: |
Japan |