Stadium: Court 5 Round: 62 Ground: Hardcourt outdoor
| ITF M25 Quinta Do Lago | 2021/10/17 15:00 | Tiago Sousa v Gian Luca Tanner | 2-6,1-6 |
| ITF M25 Loule | 2021/10/13 13:00 | Maximilian Neuchrist v Gian Luca Tanner | 6-0,6-1 |
| ITF M25 Loule | 2021/10/11 15:25 | Fermin Calvo Barcelo v Gian Luca Tanner | 3-6,7-5,8-10 |
| ITF M25 Loule | 2021/10/10 12:00 | Jaime Faria v Gian Luca Tanner | 2-6,4-6 |
| ITF M25 Setubal | 2021/10/06 12:30 | Rinky Hijikata v Gian Luca Tanner | 6-1,5-7,6-1 |
| ITF M25 Setubal | 2021/10/05 11:20 | Raphael Calzi v Gian Luca Tanner | 6-3,1-6,6-10 |
| ITF M25 Setubal | 2021/10/04 14:15 | Vlad Cristian Breazu v Gian Luca Tanner | 6-2,1-6,6-10 |
| ITF M25 Sierre | 2021/08/31 16:30 | Luca Castelnuovo v Gian Luca Tanner | 7-5,6-3 |
| ITF M25 Quinta Do Lago | 2021/10/18 13:55 | Alan F R Fierros v Noah Thurner | 6-2,6-0 |
| ITF M25 Loule | 2021/10/12 09:30 | Adria Soriano Barrera v Alan F R Fierros | 6-4,6-4 |
| ITF M25 Loule | 2021/10/11 12:00 | Afonso Portugal v Alan F R Fierros | 2-6,6-7 |
| ITF M25 Pardubice | 2021/09/20 10:00 | Tomas Lanik v Alan F R Fierros | 2-6,6-4,10-6 |
| ITF M25 Pardubice | 2021/09/19 11:00 | Michalis Sakellaridis v Alan F R Fierros | 6-7,6-4,3-10 |
| ITF M25 Sintra | 2021/09/15 12:25 | Luciano Darderi v Alan F R Fierros | 7-6,2-6,6-4 |
| ITF M25 Sintra | 2021/09/14 13:20 | Daniel Little v Alan F R Fierros | 4-6,6-7 |
| ITF M25 Sintra | 2021/09/13 12:00 | Afonso Portugal v Alan F R Fierros | 2-6,2-6 |