Stadium: Center Court Round: 19 Ground: Clay
| 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 |
| Challenger Campinas | 2021/11/14 14:00 | Mateus Alves v Johan Nikles | 4-6,2-6 |
| Challenger Lima | 2021/10/02 18:50 | Johan Nikles v Hugo Dellien | 7-6,4-6,2-6 |
| Challenger Lima | 2021/10/01 17:20 | Johan Nikles v Renzo Olivo | 6-3,6-1 |
| Challenger Lima | 2021/09/29 17:05 | Matheus Pucinelli De Almeida v Johan Nikles | 6-7,4-6 |
| Challenger Lima | 2021/09/28 15:00 | Johan Nikles v Adrian Menendez-Maceiras | 6-4,6-2 |
| Challenger Lima | 2021/09/27 15:00 | Johan Nikles v Oscar Jose Gutierrez | 6-4,6-2 |
| Challenger Sao Paulo | 2021/11/28 14:30 | Bogdan Bobrov v Enrique Bogo | 6-4,3-6,2-6 |
| Challenger Brasilia | 2021/11/23 15:50 | Bogdan Bobrov v Nicolas Alvarez Varona | 3-6,6-7 |
| Challenger Brasilia | 2021/11/22 13:00 | Bogdan Bobrov v Federico Zeballos | 6-3,6-3 |
| Challenger Campinas | 2021/11/15 13:30 | Bogdan Bobrov v Nicolas Alvarez Varona | 5-7,2-6 |
| Challenger Campinas | 2021/11/14 18:10 | Pedro Sakamoto v Bogdan Bobrov | 2-6,4-6 |
| ITF M15 Antalya | 2021/11/10 06:30 | Bogdan Bobrov v Oleksandr Bielinskyi | 4-6,1-6 |
| ITF M25 Nur-Sultan | 2021/10/31 06:00 | Bogdan Bobrov v Alibek Kachmazov | 2-6,6-4,4-6 |
| ITF M25 Nur-Sultan | 2021/10/30 05:30 | Bogdan Bobrov v Filip Peliwo | 6-2,6-3 |