Stadium: Court 8 Round: 62 Ground: Clay
| ITF M15 Pirot | 2021/09/22 08:00 | Tom Kocevar-Desman v Aristotelis Thanos | 7-6,6-1 |
| ITF M15 Ulcinj | 2021/09/02 08:30 | Antonio Cayetano March v Aristotelis Thanos | 7-6,6-4 |
| ITF M15 Ulcinj | 2021/09/01 10:00 | Aristotelis Thanos v Duje Kekez | 2-6,7-6,6-0 |
| ITF M15 Ulcinj | 2021/08/30 11:30 | Aristotelis Thanos v Aleksandar Tomas | 5-7,2-6 |
| ITF M15 Ulcinj | 2021/08/30 07:30 | Aristotelis Thanos v Danilo Raicevic | 6-2,6-1 |
| ITF M25 Poznan | 2021/08/25 13:10 | Aristotelis Thanos v Martins Podzus | 2-6,3-6 |
| ITF M25 Poznan | 2021/08/24 13:10 | Aristotelis Thanos v Valerio Aboian | 6-7,1-6 |
| ITF M25 Poznan | 2021/08/22 08:00 | Aristotelis Thanos v Peter Samosi | 6-1,6-2 |
| ITF M25 Skopje | 2021/09/26 08:30 | Martin Muedini v Ivan Manasov | 0-6,1-6 |
| ITF M15 Ulcinj | 2021/09/05 07:30 | Leonardo Catani v Ivan Manasov | 6-2,6-3 |
| ITF M15 Ulcinj | 2021/08/30 07:30 | Ivan Manasov v Aleksandar Tomas | 1-6,1-6 |
| ITF M15 Ulcinj | 2021/08/29 11:30 | Aleksandr Kalinin v Ivan Manasov | 6-7,3-6 |
| ITF M15 Skopje | 2021/05/31 11:00 | Osman Torski v Ivan Manasov | 6-2,6-2 |
| ITF M15 Skopje | 2021/05/30 08:00 | Ivan Manasov v Tom Pisane | 5-7,7-5,10-4 |