Stadium: Court 2 Round: 25 Ground: Clay
| Challenger Rio De Janeiro | 2021/12/15 14:00 | Thiago Seyboth Wild v Johan Nikles | 6-1,3-6,7-5 |
| Challenger Rio De Janeiro | 2021/12/14 13:00 | Johan Nikles v Luca Castelnuovo | 6-2,6-4 |
| Challenger Florianopolis | 2021/12/09 14:25 | Juan Ignacio Londero v Johan Nikles | 6-1,6-4 |
| Challenger Florianopolis | 2021/12/06 19:00 | Guilherme Clezar v Johan Nikles | 3-6,7-6,2-6 |
| Challenger Sao Paulo | 2021/12/01 14:15 | Johan Nikles v Felipe Meligeni Rodrigues Alves | 7-6,2-6,1-6 |
| Challenger Sao Paulo | 2021/11/30 12:30 | Johan Nikles v Kaichi Uchida | 6-7,7-6,6-0 |
| Challenger Brasilia | 2021/11/22 16:00 | Johan Nikles v Juan Ignacio Londero | 4-6,4-6 |
| Challenger Campinas | 2021/11/16 13:00 | Thiago Monteiro v Johan Nikles | 6-2,6-1 |
| ITF M15 Antalya | 2022/01/29 14:45 | Ergi Kirkin v Davide Galoppini | 1-6,6-4,2-6 |
| ITF M15 Antalya | 2022/01/29 10:20 | Ergi Kirkin v Jorge Martinez Martinez | 6-3,6-1 |
| ITF M15 Antalya | 2022/01/28 13:15 | Ergi Kirkin v Paul Woerner | 4-6,6-4,10-2 |
| ITF M25 Vilnius | 2022/01/18 09:30 | Ergi Kirkin v Daniel Cukierman | 2-6,6-4,2-6 |
| Challenger Antalya | 2021/11/30 09:35 | Nuno Borges v Ergi Kirkin | 6-4,6-3 |
| Challenger Manama | 2021/11/22 15:00 | Ergi Kirkin v Cem Ilkel | 4-6,2-6 |
| Challenger Bratislava | 2021/11/07 14:35 | Ergi Kirkin v Milos Karol | 1-6,6-7 |
| Challenger Tenerife | 2021/11/01 16:00 | Tallon Griekspoor v Ergi Kirkin | 6-2,6-2 |