Stadium: Court 3 Round: 45 Ground: Clay
| ITF Italy F21 Qual | 2018/07/28 17:40 | Jonas Greif v Horst Rieder | 1-6,4-6 |
| Challenger Ortisei | 2018/10/06 13:15 | Patric Prinoth v Jonas Greif | 6-2,7-6 |
| ITF Italy F22 | 2018/08/05 14:35 | Jonas Greif v Mattia Frinzi | 1-6,1-6 |
| ITF Italy F21 Qual | 2018/07/28 17:40 | Jonas Greif v Horst Rieder | 1-6,4-6 |
| ITF Italy F25 Qual | 2017/08/05 12:00 | Augusto Virgili v Jonas Greif | 6-3,6-1 |
| ITF Italy F23 Qual | 2016/07/30 07:30 | Alexander Weis v Jonas Greif | 6-1,6-0 |
| ITF M15 Casablanca | 2019/07/24 09:00 | Simon Carr v Horst Rieder | 2-6,6-4,6-3 |
| ITF M15 Casablanca | 2019/07/22 13:30 | Franco Feitt v Horst Rieder | 4-6,4-6 |
| ITF M15 Tanger | 2019/07/15 13:30 | Horst Rieder v Antonio M-Hidalgo | 1-6,4-6 |
| ITF M15 Tanger | 2019/07/15 09:00 | Horst Rieder v Ioannis Stamoulos | 6-4,6-4 |
| ITF M15 Telfs | 2019/07/08 07:30 | Vitalii Shcherba v Horst Rieder | 6-4,4-6,10-7 |
| ITF M15 Netanya | 2019/06/19 13:05 | Vladyslav Orlov v Horst Rieder | 6-2,6-4 |
| ITF M15 Netanya | 2019/06/18 06:30 | Horst Rieder v Rikhardt Bierman | 6-4,6-3 |
| ITF M15 Akko | 2019/06/10 06:30 | Horst Rieder v Lior Goldenberg | 4-6,5-7 |