Stadium: Cancha 8 Round: 25 Ground: Clay
| ITF M25 Oviedo | 2021/09/02 10:20 | Johan Nikles v Alvaro Lopez San Martin | 6-7,6-4,5-7 |
| ITF M25 Oviedo | 2021/09/01 14:20 | Johan Nikles v Julio Cesar Porras | 7-5,6-4 |
| ITF M25 Oviedo | 2021/08/31 10:00 | Johan Nikles v Federico Zeballos | 7-6,6-2 |
| Challenger Varšava | 2021/08/25 10:30 | Johan Nikles v Jozef Kovalík | 3-6,4-6 |
| Challenger Varšava | 2021/08/24 11:30 | Johan Nikles v Jonathan Mridha | 6-4,6-7,6-3 |
| Challenger Varšava | 2021/08/22 13:35 | Johan Nikles v Lucas Gerch | 6-4,7-5 |
| ATP Gstaad | 2021/07/19 10:30 | Johan Nikles v Vít Kopřiva | 2-6,1-6 |
| Challenger Amersfoort | 2021/07/15 18:05 | Johan Nikles v Lukáš Rosol | 2-6,1-6 |
| Challenger Quito | 2021/09/13 15:00 | Alexis Gautier v Alejandro Mendoza | 6-1,6-0 |
| ITF M15 Huy | 2021/08/28 15:00 | Alexis Gautier v Gauthier Onclin | 2-6,4-6 |
| ITF M15 Huy | 2021/08/27 13:00 | Alexis Gautier v Deney Wassermann | 6-1,6-4 |
| ITF M15 Huy | 2021/08/26 09:00 | Alexis Gautier v Nathan Seateun | 6-2,6-3 |
| ITF M15 Pescara | 2021/08/22 15:00 | Alexis Gautier v Arthur Reymond | 6-4,6-4 |
| ITF M15 Pescara | 2021/08/21 12:55 | Alexis Gautier v Emiliano Maggioli | 6-2,6-1 |
| ITF M15 Pescara | 2021/08/20 13:05 | Alexis Gautier v Gian Marco Ortenzi | 6-2,2-6,6-3 |
| ITF M15 Pescara | 2021/08/19 16:30 | Alexis Gautier v Alessandro Ingarao | 6-3,6-4 |