Stadium: Court 2 Round: 62 Ground: Clay
| ITF M15 Bad Waltersdorf | 2021/08/30 07:00 | Luigi Sorrentino v Rafael Kis Balazs | 6-2,6-3 |
| ITF M15 Bad Waltersdorf | 2021/08/23 07:00 | Luigi Sorrentino v Admir Kalender | 2-6,1-6 |
| ITF M15 Bad Waltersdorf | 2021/08/22 07:00 | Luigi Sorrentino v Matic Dimic | 4-6,7-6,10-8 |
| ITF M15 Warmbad-Villach | 2021/08/19 07:55 | Luigi Sorrentino v Sebastian Prechtel | 4-6,6-3,1-6 |
| ITF M15 Warmbad-Villach | 2021/08/17 10:30 | Fermin Tenti v Luigi Sorrentino | 5-7,4-6 |
| ITF M15 Bergamo | 2021/06/23 19:30 | Luca Potenza v Luigi Sorrentino | 6-4,0-6,2-6 |
| ITF M15 Bergamo | 2021/06/22 10:00 | Luigi Sorrentino v Ronan Joncour | 6-1,6-2 |
| ITF M15 Bergamo | 2021/06/21 16:55 | Omar Giacalone v Luigi Sorrentino | 6-7,6-7 |
| ITF M15 Bad Waltersdorf | 2021/08/22 09:00 | Joshua Peck v Stefanos Sakellaridis | 1-6,6-3,11-9 |
| ITF M15 Warmbad-Villach | 2021/08/17 07:30 | Lorenzo Vatteroni v Stefanos Sakellaridis | 7-6,6-2 |
| ITF M15 Warmbad-Villach | 2021/08/16 12:30 | Leon Benedict v Stefanos Sakellaridis | 4-6,3-6 |
| ITF M15 Novi Sad | 2021/08/01 14:00 | Stefanos Sakellaridis v Lukas Palovic | 4-6,1-6 |
| ITF M25 Kottingbrunn | 2021/07/18 07:30 | Stefanos Sakellaridis v Samuel Paulovcak | 1-6,4-6 |
| ITF M15 Sofia | 2021/07/05 07:00 | Stefanos Sakellaridis v Aristotelis Thanos | 2-6,6-7 |
| ITF M15 Antalya | 2021/06/30 06:30 | Hanwen Li v Stefanos Sakellaridis | 6-1,6-2 |
| ITF M15 Antalya | 2021/06/29 11:50 | Daniil Glinka v Stefanos Sakellaridis | 3-6,2-6 |