Stadium: Court 4 Round: 62 Ground: Hardcourt outdoor
| ITF M15 Monastir | 2021/06/06 09:00 | Mohamed Amine Aissa Khelifa v Lucas Cotler | 4-6,3-6 |
| ITF M15 Monastir | 2021/05/31 08:00 | Uisung Park v Lucas Cotler | 6-0,6-1 |
| ITF M15 Monastir | 2021/05/30 09:00 | Lucas Cotler v Skander Ben Fraj | 6-3,6-2 |
| ITF M15 Monastir | 2021/05/23 09:00 | Bruno Nhavene v Lucas Cotler | 6-1,6-2 |
| ITF M15 Cordoba | 2021/04/05 16:30 | Lucas Cotler v Felipe Derdoy | 2-6,1-6 |
| ITF M15 Villa Maria | 2021/03/28 16:00 | Lucas Cotler v Esteban Bruna | 3-6,3-6 |
| 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 |
| ITF M15 Sharm El Sheikh | 2021/03/21 16:00 | Ren Nakamura v Toby D. Boyer | 4-6,2-6 |