Stadium: Court 4 Round: 62 Ground: Hardcourt outdoor
| ITF M15 Monastir | 2021/06/07 08:00 | Ko Suzuki v Yannick Wunderlich | 6-7,7-6,10-8 |
| ITF M15 Monastir | 2021/06/06 08:00 | Ko Suzuki v Paul Spencer | 6-1,6-3 |
| ITF M15 Changwon | 2019/10/16 03:10 | Yuta Shimizu v Ko Suzuki | 6-2,6-2 |
| ITF M15 Hua Hin | 2019/08/27 04:00 | Ko Suzuki v Young-Hoon Jeong | 4-6,6-2,3-10 |
| ITF M15 Hua Hin | 2019/08/21 03:00 | Ko Suzuki v Soichiro Moritani | 4-6,4-6 |
| ITF M15 Akishima | 2019/06/12 02:30 | Rio Noguchi v Ko Suzuki | 6-3,1-6,6-3 |
| ITF M15 Akishima | 2019/06/11 03:00 | Ko Suzuki v Kazuki Shimizu | 7-5,6-3 |
| ITF M15 Akishima | 2019/06/11 00:00 | Masayoshi Ono v Ko Suzuki | 2-6,3-6 |
| ITF M15 Monastir | 2021/06/07 08:00 | Lucas Cotler v Ren Nakamura | 2-6,3-6 |
| ITF M15 Monastir | 2021/06/02 10:20 | Julian Gimenez v Ren Nakamura | 7-5,0-6,6-1 |
| ITF M15 Monastir | 2021/05/31 12:30 | Maxence Beauge v Ren Nakamura | 6-2,5-7,11-9 |
| ITF M15 Monastir | 2021/05/31 08:00 | Taketo Takamisawa v Ren Nakamura | 2-6,3-6 |
| ITF M15 Monastir | 2021/05/30 09:30 | Dong Ju Kim v Ren Nakamura | 7-5,6-7,5-10 |
| ITF M15 Monastir | 2021/05/24 13:45 | Maxence Beauge v Ren Nakamura | 6-3,6-2 |
| ITF M15 Monastir | 2021/05/24 09:00 | Antoine Vincent v Ren Nakamura | 6-1,1-6,9-11 |
| ITF M15 Monastir | 2021/05/23 11:30 | Laelson Rodrigues v Ren Nakamura | 4-6,2-6 |