Stadium: Rado CC Round: 54 Ground: Carpet indoor
| ITF M15 Oberhaching | 2023/02/12 09:00 | Jonas Schaer v Andrej Nedic | 2-6,4-6 |
| ITF M25 Veigy-Foncenex | 2023/01/09 11:10 | Yanis Ghazouani Durand v Jonas Schaer | 6-3,6-3 |
| ITF M25 Veigy-Foncenex | 2023/01/08 14:05 | Mayeul Darras v Jonas Schaer | 4-6,4-6 |
| ITF M15 Madrid | 2022/12/07 12:00 | Jan Choinski v Jonas Schaer | 6-1,7-6 |
| ITF M25 Madrid | 2022/12/06 10:00 | Jonas Schaer v Luca Parenti | 6-0,6-0 |
| ITF M15 Madrid | 2022/12/01 08:45 | Benjamin Winter Lopez v Jonas Schaer | 6-4,6-4 |
| ITF M15 Madrid | 2022/11/30 10:10 | Jonas Schaer v Alejandro T Alvarez | 6-3,6-3 |
| ITF M25 Madrid | 2022/11/29 08:30 | Marc Saura Moragrega v Jonas Schaer | 4-6,5-7 |
| Tsjekkia - Extraliga | 2022/12/11 12:00 | Vojtech Vlkovsky v Jacob Kahoun | 2-6,6-3,3-5 |
| ITF M25 Trimbach | 2022/03/14 10:55 | Jacob Kahoun v Hendrik Jebens | 6-4,3-6,3-10 |
| ITF M25 Trimbach | 2021/03/08 14:35 | Jacob Kahoun v Lewie Lane | 4-6,6-7 |
| ITF Switzerland F5 | 2017/08/30 13:40 | Hiroyasu Ehara v Jacob Kahoun | 7-6,6-1 |
| ITF Switzerland F5 | 2017/08/28 16:25 | Patrick Mayer v Jacob Kahoun | 6-3,4-6,4-6 |
| ITF Croatia F4 Qual | 2017/03/26 07:00 | Corrado Summaria v Jacob Kahoun | 6-3,6-4 |
| ITF Switzerland F2 Qual | 2017/02/11 17:30 | Hugo Voljacques v Jacob Kahoun | 6-2,6-1 |
| ITF Switzerland F1 Qual | 2017/02/06 09:00 | Johannes Haerteis v Jacob Kahoun | 6-2,6-3 |