Stadium: Court 1 Round: 62 Ground: Hardcourt outdoor
| ITF - Monastir M15 | 2021/06/20 08:00 | Ko Suzuki v Jake Van Emburgh | 4-6,2-6 |
| ITF - Monastir M15 | 2021/06/14 09:00 | Carles Hernandez v Ko Suzuki | 6-4,6-3 |
| ITF - Monastir M15 | 2021/06/13 09:00 | Francisco Faigenbaum v Ko Suzuki | 0-6,2-6 |
| ITF - Monastir M15 | 2021/06/09 10:00 | Ko Suzuki v Tomas Farjat | 2-6,3-6 |
| ITF - Monastir M15 | 2021/06/07 12:30 | Ko Suzuki v Ren Nakamura | 6-4,6-1 |
| ITF - Monastir M15 | 2021/06/07 08:00 | Ko Suzuki v Yannick Wunderlich | 6-7,7-6,10-8 |
| ITF - Monastir M15 | 2021/06/06 08:00 | Ko Suzuki v Paul Spencer | 6-1,6-3 |
| ITF - Changwon M15 | 2019/10/16 03:10 | Yuta Shimizu v Ko Suzuki | 6-2,6-2 |