Stadium: Pista 4 Round: 27 Ground: Hardcourt outdoor
| Challenger Mallorca Herredouble | 2021/08/31 12:25 | Tan/Trouve v Gonzales/Johnson | 4-6,1-6 |
| Challenger Meerbusch - Herredobbel | 2021/08/12 14:00 | Brown/Haase v Gonzales/Johnson | 6-0,6-4 |
| Challenger Meerbusch - Herredobbel | 2021/08/10 15:30 | Gonzales/Johnson v Schmitz/Tsitsipas | 7-6,6-1 |
| Challenger Liberec - Herredouble | 2021/08/05 16:20 | Gonzales/Johnson v Jebavy/Zelenay | 6-4,4-6,3-10 |
| Challenger Poznan - Herredouble | 2021/07/30 16:55 | Drzewiecki/Vukic v Gonzales/Johnson | 6-4,6-4 |
| Challenger Poznan - Herredouble | 2021/07/29 16:25 | Gonzales/Johnson v Walkow/Zielinski | 2-6,7-6,13-11 |
| Challenger Poznan - Herredouble | 2021/07/28 12:55 | Kasnikowski/Michalski v Gonzales/Johnson | 3-6,4-6 |
| Challenger Tampere - Herredouble | 2021/07/23 14:00 | Luz/M R Alves v Gonzales/Johnson | 3-6,6-1,10-8 |
| Challenger Mallorca Herredouble | 2021/09/01 19:20 | Matsui/Uesugi v Romboli/Zielinski | 7-5,6-7,10-12 |
| Challenger Warszawa - Herredouble | 2021/08/28 11:30 | Manafov/Matuszewski v Romboli/Zielinski | 7-6,3-6,10-6 |
| Challenger Split - Herredouble | 2020/09/30 09:00 | Luz/Matos v Romboli/Zielinski | 7-6,4-6,10-7 |