Stadium: Court 1 Round: 62 Ground: Hardcourt outdoor
| Challenger Maia | 2021/12/17 15:00 | Andrej Martin v Sebastian Fanselow | 6-2,6-2 |
| Challenger Maia | 2021/12/16 10:00 | Sebastian Fanselow v Goncalo Oliveira | 7-6,6-4 |
| Challenger Maia | 2021/12/14 11:00 | Sebastian Fanselow v Fabio Coelho | 6-3,3-6,6-3 |
| Challenger Bari | 2021/11/25 10:30 | Oscar Otte v Sebastian Fanselow | 6-3,6-7,7-5 |
| Challenger Bari | 2021/11/23 09:00 | Sebastian Fanselow v Dominic Stephan Stricker | 4-6,6-4,7-5 |
| Challenger Bari | 2021/11/22 10:10 | Sebastian Fanselow v Matteo Gigante | 2-6,7-5,6-2 |
| Challenger Pau | 2021/11/18 19:15 | Sebastian Fanselow v Holger Rune | 2-6,2-6 |
| Challenger Pau | 2021/11/17 12:40 | Hiroki Moriya v Sebastian Fanselow | 6-7,4-6 |
| ITF M15 Madrid | 2021/10/26 11:05 | Alejandro Moro Canas v Mikel Martinez | 6-2,7-5 |
| ITF M25 Sintra | 2021/09/14 10:00 | John Echeverria v Mikel Martinez | 6-1,6-1 |
| ITF M25 Sintra | 2021/09/13 14:55 | Eduardo Morais v Mikel Martinez | 6-2,3-6,6-10 |
| ITF M25 Sintra | 2021/09/06 12:30 | Mikel Martinez v Daniel Little | 3-6,3-6 |
| ITF M25 Oviedo | 2021/08/30 07:50 | Diego A B Sanchez v Mikel Martinez | 6-3,6-1 |
| ITF M25 Oviedo | 2021/08/29 07:50 | Daniel L Salmeron v Mikel Martinez | 4-6,3-6 |
| ITF M25 Idanha-A-Nova | 2021/07/18 13:00 | Luca Sanchez v Mikel Martinez | 6-7,6-4,10-7 |
| ITF M15 Marbella | 2021/05/24 08:00 | Michael Zhu v Mikel Martinez | 7-6,3-6,10-3 |