Stadium: Hard 20 Round: 26 Ground: Hardcourt outdoor
| ITF - M15 Héraklion | 2021/06/09 06:30 | Makoto Ochi v Musialek, Alexis | 4-6,2-6 |
| ITF M15 Marbella | 2021/05/26 09:25 | Edan Leshem v Musialek, Alexis | 7-5,6-3 |
| ITF - M15 Héraklion | 2021/05/20 09:25 | Musialek, Alexis v Petros Chrysochos | 3-6,6-3,2-6 |
| ITF - M15 Héraklion | 2021/05/19 11:30 | Sergis Kyratzis v Musialek, Alexis | 0-6,4-6 |
| ITF M15 Troisdorf | 2021/05/10 08:00 | Musialek, Alexis v Amaury Raynel | 4-6,1-6 |
| ITF M15 Troisdorf | 2021/05/09 08:00 | Musialek, Alexis v Loccisano, Mike | 6-1,6-3 |
| ITF M15 Majadahonda | 2021/05/03 12:00 | Musialek, Alexis v Max Alcala Gurri | 6-3,3-6,11-13 |
| ITF M15 Majadahonda | 2021/05/02 16:15 | Musialek, Alexis v Breysach , Martin | 6-1,6-1 |
| ITF - M15 Héraklion | 2021/06/09 09:55 | Aristotelis Thanos v Kelsey Stevenson | 6-2,7-5 |
| ITF - M15 Héraklion | 2021/06/01 08:00 | Aristotelis Thanos v Breysach , Martin | 3-6,3-6 |
| ITF - M15 Héraklion | 2021/05/25 06:30 | Aristotelis Thanos v Lorenzo Joaquin Rodriguez | 6-2,6-0 |
| ITF - M15 Héraklion | 2021/05/23 10:00 | Aristotelis Thanos v Stephanos Schinas | 5-7,6-1,10-7 |
| ITF - M15 Héraklion | 2021/05/20 06:30 | Yuta Shimizu v Aristotelis Thanos | 3-6,6-1,7-6 |
| ITF - M15 Héraklion | 2021/05/19 06:30 | Keisidis, Christos v Aristotelis Thanos | 2-6,2-6 |
| ITF - M15 Héraklion | 2021/05/18 06:30 | Aristotelis Thanos v Morris, Eric | 7-6,6-0 |
| UTR Pro Tennis Series Pazardzhik | 2021/04/10 13:30 | Lazov, Alexander v Aristotelis Thanos | 6-4,5-4 |