Stadion: Pista 5 Round: 25 Ground: Clay
| Challenger - Neapel - Qualifikation | 2021/10/10 14:00 | Alexander Weis v Filip Cristian Jianu | 3-6,6-4,3-6 |
| ITF - M15 - Platja D'Aro | 2021/10/05 10:45 | Alexander Weis v Daniel Merida Aguilar | 4-6,3-6 |
| Challenger - Murcia | 2021/09/26 13:30 | Corentin Denolly v Alexander Weis | 4-6,6-1,6-4 |
| ITF - M25 - Pardubice | 2021/09/25 09:40 | Henri Squire v Alexander Weis | 6-4,6-1 |
| ITF - M25 - Pardubice | 2021/09/23 10:30 | Alexander Weis v Toby Martin | 6-7,6-3,6-2 |
| ITF - M25 - Pardubice | 2021/09/22 08:00 | Alexander Weis v Mikalai Haliak | 7-6,6-4 |
| Challenger - Banja Luka | 2021/09/05 11:05 | Dragos Nicolae Madaras v Alexander Weis | 6-3,6-0 |
| ITF - M25 - Sierre | 2021/09/01 11:35 | Yannik Steinegger v Alexander Weis | 6-7,7-6,6-3 |
| ITF - M15 - Platja D'Aro | 2021/10/14 09:00 | Manish Sureshkumar v Maxime Chazal | 4-6,5-7 |
| ITF - M15 - Platja D'Aro | 2021/10/13 10:20 | Pol Amoros Ramos v Manish Sureshkumar | 2-6,5-7 |
| ITF - M15 - Platja D'Aro | 2021/10/07 13:35 | Giovanni Fonio v Manish Sureshkumar | 6-0,6-1 |
| ITF - M15 - Platja D'Aro | 2021/10/05 08:25 | Alex Barrena v Manish Sureshkumar | 5-7,4-6 |
| Challenger - Murcia | 2021/09/26 10:40 | Manish Sureshkumar v Jonathan Mridha | 6-7,4-6 |
| ITF - M25 - Madrid | 2021/09/14 07:00 | Manish Sureshkumar v Mario G Fernandez | 6-4,6-3 |
| ITF - M25 - Madrid | 2021/09/13 09:00 | Manish Sureshkumar v Chanon Phunsawat | 6-4,7-5 |
| ITF - M15 - Allershausen | 2021/09/03 10:00 | Manish Sureshkumar v Mick Veldheer | 1-6,6-4,0-6 |