Stadium: Court Tsitsipas Round: 27 Ground: Hardcourt outdoor
| ITF M15 Heraklion | 2021/11/04 08:55 | Aristotelis Thanos v Alessandro Spadola | 7-5,2-6,6-3 |
| ITF M15 Heraklion | 2021/11/03 07:00 | Karlis Ozolins v Aristotelis Thanos | 2-6,4-6 |
| ITF M25 Skopje | 2021/09/29 11:50 | Aristotelis Thanos v Gorazd Srbljak | 2-6,4-6 |
| ITF M25 Skopje | 2021/09/28 07:30 | Aristotelis Thanos v William Ma | 6-4,6-1 |
| ITF M25 Skopje | 2021/09/27 11:00 | Aristotelis Thanos v Ivan Manasov | 6-3,6-2 |
| 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 Heraklion | 2021/11/04 08:30 | Tim Heger v Kyle Seelig | 6-4,4-6,5-7 |
| ITF M15 Heraklion | 2021/11/02 10:45 | Sergis Kyratzis v Kyle Seelig | 6-4,3-6,3-6 |
| ITF M15 Ithaca | 2021/10/07 14:00 | Kyle Seelig v Radu Mihai Papoe | 2-6,6-1,2-6 |
| ITF M15 Ithaca | 2021/10/06 13:00 | Kyle Seelig v Petro Orlando Fellin | 6-1,7-5 |
| ITF M25 Johannesburg | 2021/09/24 09:45 | Kyle Seelig v Benjamin Lock | 6-7,5-7 |
| ITF M25 Johannesburg | 2021/09/23 07:00 | Igor Marcondes v Kyle Seelig | 6-1,6-7,1-6 |
| ITF M25 Johannesburg | 2021/09/22 10:05 | Peter Goldsteiner v Kyle Seelig | 0-6,6-2,2-6 |
| ITF M25 Johannesburg | 2021/09/14 07:50 | Kyle Seelig v Filip Peliwo | 3-6,4-6 |