Stadium: Court 2 Round: 44 Ground: Clay
| ITF M15 Vyshkovo | 2021/09/20 06:00 | Horst Rieder v Oleksiy Kalynyuk | 6-3,6-0 |
| ITF M15 Ulcinj | 2021/09/06 07:30 | Gabriele Piraino v Horst Rieder | 7-6,6-1 |
| ITF M15 Ulcinj | 2021/08/29 12:30 | Lautaro Agustin Falabella v Horst Rieder | 6-3,2-6,10-7 |
| ITF M25 Bolzano | 2021/08/02 14:25 | Horst Rieder v Dominique Graf | 6-7,3-6 |
| ITF M25 Bolzano | 2021/08/01 07:30 | Horst Rieder v Gabriele Camilli | 6-1,7-6 |
| ITF M25 Ricany | 2019/09/22 09:00 | Michael Paty v Horst Rieder | 2-6,4-6 |
| ITF M25 Santa Margherita | 2019/09/18 15:40 | Horst Rieder v Riccardo Di Nocera | 3-6,7-5,4-6 |
| ITF M25 Santa Margherita | 2019/09/17 12:00 | Marcel Marlon Sudzum v Horst Rieder | 0-6,0-6 |
| ITF M15 Vyshkovo | 2021/09/20 06:00 | Vlad Stoica v Danylo Veremeychuk | 0-6,2-6 |
| ITF M15 Chornomorsk | 2021/08/29 09:30 | Danylo Veremeychuk v Federico Campana | 3-6,4-6 |
| ITF M15 Antalya | 2021/06/06 07:30 | Danylo Veremeychuk v Giorgio Tabacco | 1-6,3-6 |
| ITF M15 Antalya | 2021/05/25 07:00 | Giorgio Tabacco v Danylo Veremeychuk | 6-3,6-0 |
| ITF M15 Antalya | 2021/05/24 07:00 | Santiago De La Fuente v Danylo Veremeychuk | 3-6,6-2,7-10 |
| ITF M15 Antalya | 2021/05/23 07:30 | Danylo Veremeychuk v Stefanos Sakellaridis | 6-4,6-4 |
| ITF M15 Antalya | 2021/05/16 07:00 | Danylo Veremeychuk v Noel Larwig | 3-6,6-3,8-10 |
| ITF M15 Antalya | 2021/05/09 07:00 | Danylo Veremeychuk v Marco Miceli | 4-6,3-6 |