Stadium: Tammsaare 4 Round: 54 Ground: Hardcourt indoor
| ITF M15 - Caïro | 2021/07/29 08:00 | Quentin Folliot v Manfred Fellin | 6-0,6-4 |
| ITF M15 - Caïro | 2021/07/28 11:15 | Vlad Andrei Dancu v Manfred Fellin | 4-6,5-7 |
| ITF M15 - Caïro | 2021/07/27 12:39 | Manfred Fellin v Nicolas Agustin Lema | 7-6,7-5 |
| ITF M15 - Caïro | 2021/07/27 10:30 | Manfred Fellin v Nicolas Agustin Lema | 7-6,7-5 |
| ITF M15 - Caïro | 2021/07/26 08:00 | Manfred Fellin v Sami Ben Abdennibi | 6-1,6-0 |
| ITF M15 - Caïro | 2021/07/25 07:00 | Manfred Fellin v Ammar Alhaqbani | 6-3,7-5 |
| ITF M15 - Caïro | 2021/07/21 10:30 | Manfred Fellin v Nathan Seateun | 4-6,0-6 |
| ITF M15 - Novomoskovsk | 2021/05/30 06:15 | Manfred Fellin v Leyton Rivera | 4-6,6-3,6-10 |
| ITF M15 - Kouvola | 2021/05/25 09:10 | Jonas Maier v Oskar Stumpf | 6-3,6-0 |
| ITF M15 - Kouvola | 2021/05/24 12:30 | Oskar Stumpf v Ville Perkkola | 6-2,6-1 |