Stadium: Court 8 Round: 26 Ground: Hardcourt outdoor
| ATP Cincinnati MD | 2021/08/18 01:10 | Krawietz/Tecau v Delbonis/Schwartzman | 7-5,6-3 |
| ATP Toronto MD | 2021/08/14 16:30 | Mektic/Pavic v Krawietz/Tecau | 7-6,7-6 |
| ATP Toronto MD | 2021/08/13 16:00 | Krawietz/Tecau v Karatsev/Lajovic | 6-3,3-6,10-3 |
| ATP Toronto MD | 2021/08/11 21:50 | Krawietz/Tecau v Marach/Oswald | 6-2,1-6,12-10 |
| ATP Hamburg MD | 2021/07/18 09:00 | Krawietz/Tecau v Puetz/Venus | 3-6,7-6,8-10 |
| ATP Hamburg MD | 2021/07/17 09:00 | Krawietz/Tecau v Cerretani/Verdugo | 6-3,6-4 |
| ATP Hamburg MD | 2021/07/14 17:20 | Krawietz/Tecau v Altmaier/Molleker | 6-3,6-2 |
| ATP Hamburg MD | 2021/07/13 17:25 | Krawietz/Tecau v Gonzales/Johnson | 6-0,6-1 |
| ATP Cincinnati MD | 2021/08/16 22:45 | Arevalo/Fognini v Karatsev/Lajovic | 7-5,6-7,11-9 |