Stadium: CC Round: 54 Ground: Clay
| ITF M15 Eupen | 2024/08/04 08:00 | Louis Herman v Jonas Schaer | 6-3,3-6,10-7 |
| ITF M25 Trimbach | 2024/03/12 09:00 | Filippo Romano v Jonas Schaer | 6-4,6-3 |
| ITF M25 Trimbach | 2024/03/11 10:30 | Jacob Kahoun v Jonas Schaer | 5-7,2-6 |
| ITF M15 Oberhaching | 2024/02/12 10:00 | Fabien Salle v Jonas Schaer | 3-6,6-3,10-7 |
| ITF M15 Oberhaching | 2024/02/11 13:00 | Jonas Schaer v Ryan James Storrie | 6-4,3-6,10-6 |
| ITF M15 Oberhaching | 2024/02/11 09:00 | Yvo Panak v Jonas Schaer | 6-7,4-6 |
| ITF M25 Mulhouse | 2023/10/30 13:25 | Pierre Delage v Jonas Schaer | 6-3,6-3 |
| ITF M25 Mulhouse | 2023/10/29 14:20 | Max Cunat v Jonas Schaer | 3-6,4-6 |
| ITF M25 Trimbach | 2023/03/13 12:25 | Alessandro Pecci v Janis Raffael Simmen | 6-2,6-4 |
| ITF M15 Bern | 2022/06/27 11:05 | Janis Raffael Simmen v Raffael Schaer | 7-5,4-6,4-10 |
| ITF M25 Trimbach | 2022/03/16 13:20 | Georgii Kravchenko v Janis Raffael Simmen | 6-4,6-1 |
| ITF M25 Trimbach | 2022/03/15 11:20 | Andre Windler v Janis Raffael Simmen | 6-3,6-7,5-10 |
| ITF M25 Trimbach | 2022/03/14 14:00 | Janis Raffael Simmen v Raffael Schaer | 6-4,6-4 |