Stadium: Court 2 Round: 26 Ground: Hardcourt indoor
| ITF - M25 Sierre - Dublu Masculin | 2021/08/31 09:55 | Breut/Minc v Melzer/Sudzum | 6-2,7-6 |
| ITF - M25 Trier - Dublu Masculin | 2021/08/25 13:00 | Wehnelt/Zahraj v Melzer/Sudzum | 6-2,6-0 |
| ITF - M25 Koksijde - Dublu Masculin | 2021/08/18 10:00 | Beaupain/Perchicot v Melzer/Sudzum | 6-2,6-3 |
| ITF - M25 Uriage - Dublu Masculin | 2021/07/13 12:30 | Melzer/Sudzum v Blanchet/Darras | 3-6,0-6 |
| ITF - M25 Marburg - Dublu Masculin | 2021/07/07 14:00 | Handel/Steinegger v Melzer/Sudzum | 6-1,7-6 |
| ITF - M25 Bourg-en-Bresse - Dublu Masculin | 2021/06/29 12:00 | Melzer/Sudzum v Aubriot/Salvestre | 2-6,5-7 |