Stadion: Court 4 Round: 26 Ground: Hardcourt outdoor
| ITF - M15 - Recife | 2021/09/22 17:40 | Daniel V C Rebelo v Nicolas Zanellato | 0-6,1-6 |
| ITF - M15 - Monastir | 2021/09/05 09:30 | Timur Kiyamov v Nicolas Zanellato | 6-0,6-2 |
| ITF - M15 - Monastir | 2021/08/29 09:30 | Nicolas Zanellato v Alec Beckley | 4-6,2-6 |
| ITF - M15 - Monastir | 2021/08/23 08:00 | Nicolas Zanellato v Robin Bertrand | 3-6,5-7 |
| ITF - M15 - Monastir | 2021/08/22 11:00 | Syed Mohd Agil Syed Naguib v Nicolas Zanellato | 6-4,2-6,4-10 |
| ITF - M15 - Sarajevo | 2021/05/31 12:00 | Bozo Barun v Nicolas Zanellato | 6-3,6-1 |
| ITF - M15 - Sarajevo | 2021/05/31 10:00 | Andrej Nedic v Nicolas Zanellato | 3-6,3-6 |
| ITF - M25 - Kiseljak | 2021/05/25 10:20 | Nicolas Zanellato v Lilian Breut | 6-4,3-6,8-10 |
| ITF - M15 - Recife | 2021/09/22 14:10 | Joao Eduardo Schiessl v Ignacio Carou | 0-6,6-2,7-6 |
| ITF - M25 - Medellín | 2021/09/12 15:00 | Pedro Sakamoto v Joao Eduardo Schiessl | 6-2,6-1 |
| ITF - M15 - Ibague | 2021/09/05 15:00 | Joao Eduardo Schiessl v Juan Sebastian Osorio | 4-6,6-2,4-10 |