Stadium: B & B Court Round: 27 Ground: Clay
| Challenger Meerbusch - MD | 2021/08/11 10:30 | Brown/Haase v Verdugo/Reyes-Varela | 6-4,6-2 |
| Challenger Meerbusch - MD | 2021/08/10 15:30 | Gonzales/Johnson v Schmitz/Tsitsipas | 7-6,6-1 |
| Challenger Liberec - MD | 2021/08/05 16:20 | Gonzales/Johnson v Jebavy/Zelenay | 6-4,4-6,3-10 |
| Challenger Poznań - MD | 2021/07/30 16:55 | Drzewiecki/Vukic v Gonzales/Johnson | 6-4,6-4 |
| Challenger Poznań - MD | 2021/07/29 16:25 | Gonzales/Johnson v Walkow/Zielinski | 2-6,7-6,13-11 |
| Challenger Poznań - MD | 2021/07/28 12:55 | Kasnikowski/Michalski v Gonzales/Johnson | 3-6,4-6 |
| Challenger Tampere - MD | 2021/07/23 14:00 | Luz/M R Alves v Gonzales/Johnson | 3-6,6-1,10-8 |
| Challenger Tampere - MD | 2021/07/21 13:40 | Gonzales/Johnson v Borg/Virtanen | 2-6,7-5,10-4 |
| ATP Hamburg - MD | 2021/07/13 17:25 | Krawietz/Tecau v Gonzales/Johnson | 6-0,6-1 |