Stadium: Hard Court Central Round: 25 Ground: Hardcourt outdoor
| ITF M15 - Heraklion | 2021/06/01 08:00 | Aristotelis Thanos v Martin Breysach | 3-6,3-6 |
| ITF M15 - Heraklion | 2021/05/25 06:30 | Aristotelis Thanos v Lorenzo Joaquin Rodriguez | 6-2,6-0 |
| ITF M15 - Heraklion | 2021/05/23 10:00 | Aristotelis Thanos v Stephanos Schinas | 5-7,6-1,10-7 |
| ITF M15 - Heraklion | 2021/05/20 06:30 | Yuta Shimizu v Aristotelis Thanos | 3-6,6-1,7-6 |
| ITF M15 - Heraklion | 2021/05/19 06:30 | Christos Keisidis v Aristotelis Thanos | 2-6,2-6 |
| ITF M15 - Heraklion | 2021/05/18 06:30 | Aristotelis Thanos v Eric Morris | 7-6,6-0 |
| UTR Pro Tennis Series - Pazardzhik | 2021/04/10 13:30 | Alexander Lazov v Aristotelis Thanos | 6-4,5-4 |
| UTR Pro Tennis Series - Pazardzhik | 2021/04/09 12:30 | Aristotelis Thanos v Pierre Faivre | 6-2,6-5 |
| ITF M15 - Heraklion | 2021/06/01 08:00 | Alexander Donski v Kelsey Stevenson | 6-3,6-2 |
| ITF M15 - Heraklion | 2021/05/26 06:30 | Adam Jones v Kelsey Stevenson | 6-2,4-6,6-3 |
| ITF M15 - Heraklion | 2021/05/18 08:00 | Felix Corwin v Kelsey Stevenson | 3-6,6-3,7-5 |
| ITF M15 - Jerusalem | 2021/05/12 08:40 | Kelsey Stevenson v Aidan Mayo | 4-6,0-6 |
| ITF M15 - Cairo | 2021/04/14 15:55 | Mukund Sasikumar v Kelsey Stevenson | 6-1,6-2 |
| ITF M15 - Sharm El Sheikh | 2021/04/07 13:40 | Nicolas Moreno De Alboran v Kelsey Stevenson | 6-2,6-2 |
| ITF M15 - Sharm El Sheikh | 2021/03/24 14:25 | Kelsey Stevenson v Filip Peliwo | 3-6,6-7 |
| ITF M15 - Sharm El Sheikh | 2021/03/17 13:15 | Yu Hsiou Hsu v Kelsey Stevenson | 6-3,6-2 |