Stadium: Court 3 Round: 45 Ground: Clay
| ITF M25 Santa Margherita | 2019/09/10 13:35 | Horst Rieder v Marcel Marlon Sudzum | 2-6,6-2,10-5 |
| ITF M25 Santa Margherita | 2019/09/16 12:00 | Stephanos Schinas v Marcel Marlon Sudzum | 2-6,7-5,8-10 |
| ITF M25 Santa Margherita | 2019/09/10 13:35 | Horst Rieder v Marcel Marlon Sudzum | 2-6,6-2,10-5 |
| ITF M25 Santa Margherita | 2019/09/09 12:00 | Marcel Marlon Sudzum v Marc Guardeno | 6-1,6-3 |
| ITF M15 Lambermont | 2019/08/19 09:50 | Marcel Marlon Sudzum v Michalis Sakellaridis | 5-7,6-4,8-10 |
| ITF M15 Den Haag | 2019/07/01 07:30 | Marc Dijkhuizen v Marcel Marlon Sudzum | 6-0,6-2 |
| ITF M15 Alkmaar | 2019/06/24 09:30 | Marcel Marlon Sudzum v Roy Sarut De Valk | 2-6,3-6 |
| ITF M25 Most | 2019/05/27 08:30 | Pavel Motl v Marcel Marlon Sudzum | 6-3,6-3 |
| ITF M25 Santa Margherita | 2019/04/15 12:00 | Toby Martin v Marcel Marlon Sudzum | 6-1,6-2 |
| ITF M25 Santa Margherita | 2019/09/13 11:00 | Horst Rieder v Wilson Leite | 1-6,1-6 |
| ITF M25 Santa Margherita | 2019/09/11 13:30 | Giorgio Portaluri v Horst Rieder | 3-6,4-6 |
| ITF M25 Santa Margherita | 2019/09/10 13:35 | Horst Rieder v Marcel Marlon Sudzum | 2-6,6-2,10-5 |
| ITF M25 Santa Margherita | 2019/09/09 12:00 | Horst Rieder v Maksim Mokrousov | 6-0,6-1 |
| ITF M15 Santa Cristina | 2019/08/12 12:50 | Leonardo Taddia v Horst Rieder | 6-7,4-6 |
| ITF M25 Appiano | 2019/08/05 13:55 | Lorenzo Rottoli v Horst Rieder | 3-6,6-4,10-5 |
| ITF M25 Appiano | 2019/08/05 07:30 | Tobias Kirchlechner v Horst Rieder | 2-6,1-6 |
| ITF M25 Bolzano | 2019/07/30 07:00 | Andrea Guerrieri v Horst Rieder | 6-2,7-5 |