Stadium: Court 18 Round: 28 Ground: Hardcourt outdoor
| Challenger Maia | 2021/12/17 12:55 | Nuno Borges v Nikolas Sanchez Izquierdo | 6-4,6-4 |
| Challenger Maia | 2021/12/16 14:20 | Nikolas Sanchez Izquierdo v Gastao Elias | 6-1,6-7,6-3 |
| Challenger Maia | 2021/12/13 14:30 | Javier Barranco Cosano v Nikolas Sanchez Izquierdo | 4-6,6-4,4-6 |
| Challenger Maia | 2021/12/08 11:00 | Geoffrey Blancaneaux v Nikolas Sanchez Izquierdo | 6-3,3-6,6-2 |
| Challenger Antalya | 2021/11/30 12:30 | Nikolas Sanchez Izquierdo v Oliver Crawford | 1-6,3-6 |
| Challenger Bari | 2021/11/23 11:30 | Nikolas Sanchez Izquierdo v Flavio Cobolli | 6-3,2-6,0-6 |
| Challenger Pau | 2021/11/15 10:00 | Nikolas Sanchez Izquierdo v Georgii Kravchenko | 1-6,2-6 |
| Challenger Pau | 2021/11/14 11:15 | Nikolas Sanchez Izquierdo v Piotr Matuszewski | 6-2,6-1 |
| ITF M25 Manacor | 2022/01/15 10:00 | Alberto Barroso Campos v Johannes Haerteis | 7-6,6-4 |
| ITF M25 Manacor | 2022/01/14 11:00 | Peter Heller v Johannes Haerteis | 6-7,6-4,3-6 |
| ITF M25 Manacor | 2022/01/12 10:00 | Sandro Cottino v Johannes Haerteis | 6-4,3-6,4-6 |
| Challenger Manama | 2021/11/24 08:00 | Evgeny Karlovskiy v Johannes Haerteis | 6-3,6-1 |
| Challenger Manama | 2021/11/23 11:40 | Johannes Haerteis v Alexander Erler | 6-3,6-4 |
| Challenger Manama | 2021/11/22 08:00 | Johannes Haerteis v Alexandar Lazarov | 3-6,6-7 |
| Challenger Manama | 2021/11/21 10:05 | Johannes Haerteis v Ammar Faleh Alhogbani | 6-2,6-1 |
| Challenger Helsinki | 2021/11/14 09:00 | Johannes Haerteis v Viktor Durasovic | 4-6,6-7 |