Stadion: Court 1 Round: 28 Ground: Hardcourt indoor
| ITF - M25 - Hamburg | 2021/10/22 12:40 | Henri Squire v Lenny Hampel | 6-4,6-4 |
| ITF - M25 - Hamburg | 2021/10/21 09:45 | Daniel Masur v Henri Squire | 4-6,4-6 |
| ITF - M25 - Hamburg | 2021/10/19 11:25 | Henri Squire v Milan Welte | 6-2,6-2 |
| ITF - M25 - Skopje | 2021/10/01 13:30 | Riccardo Balzerani v Henri Squire | 2-6,4-6 |
| ITF - M25 - Skopje | 2021/10/01 09:30 | Gorazd Srbljak v Henri Squire | 6-1,3-6,4-6 |
| ITF - M25 - Skopje | 2021/09/29 07:30 | Henri Squire v Eric Vanshelboim | 6-2,6-3 |
| ITF - M25 - Pardubice | 2021/09/26 08:00 | Filip Misolic v Henri Squire | 7-5,6-3 |
| ITF - M25 - Pardubice | 2021/09/25 09:40 | Henri Squire v Alexander Weis | 6-4,6-1 |
| ITF - M25 - Hamburg | 2021/10/22 12:10 | Johannes Haerteis v Daniel Little | 6-4,6-4 |
| ITF - M25 - Hamburg | 2021/10/21 15:45 | Johannes Haerteis v Leonard Von Hindte | 6-3,6-4 |
| ITF - M25 - Hamburg | 2021/10/20 10:50 | Johannes Haerteis v Riccardo Balzerani | 6-3,6-4 |
| ITF - M25 - Jönköping | 2021/09/20 10:45 | Filip Bergevi v Johannes Haerteis | 6-4,7-6 |
| ITF - M25 - Plaisir | 2021/09/15 11:45 | Johannes Haerteis v Leny Mitjana | 4-6,6-7 |
| Challenger - Tulln | 2021/09/06 13:00 | Johannes Haerteis v Filip Horansky | 6-4,4-6,3-6 |
| Challenger - Mallorca | 2021/09/01 18:40 | Johannes Haerteis v Lukas Lacko | 2-6,3-6 |
| Challenger - Mallorca | 2021/08/31 08:00 | Nicolas Moreno De Alboran v Johannes Haerteis | 3-6,6-4,4-6 |