Stadium: C1 Round: 54 Ground: Clay
| ITF M25 Muttenz | 2023/08/14 14:00 | Jonas Schaer v Thomas Mathys | 6-3,5-7,10-4 |
| ITF M15 Monastir | 2023/04/05 12:35 | Zhan Zheng v Jonas Schaer | 2-6,6-4,6-1 |
| ITF M15 Monastir | 2023/04/04 12:30 | Jonas Schaer v Aaron Gil Garcia | 3-6,7-6,12-10 |
| ITF M15 Monastir | 2023/03/27 15:55 | Jonas Schaer v Federico Salomone | 3-6,0-6 |
| ITF M15 Monastir | 2023/03/27 08:30 | Jonas Schaer v Youssef Labbene | 7-6,4-6,10-2 |
| ITF M15 Monastir | 2023/03/26 08:30 | Jonas Schaer v Oleg Syrovatskiy | 6-0,6-3 |
| Challenger Biel | 2023/03/19 10:45 | Jonas Schaer v Saba Purtseladze | 6-4,3-6,2-6 |
| ITF M25 Trimbach | 2023/03/16 12:35 | Neil Oberleitner v Jonas Schaer | 7-6,6-3 |
| ITF M25 Muttenz | 2023/08/14 16:20 | Sacha Ouzilou v Leonardo Taddia | 5-7,5-7 |
| ITF M25 Bacau | 2023/07/23 08:30 | Leonardo Taddia v Umberto Maria Giovannini | 6-4,4-6,9-11 |
| ITF M25 Castelo Branco | 2023/07/17 11:30 | Adan Freire Da Silva v Leonardo Taddia | 6-3,6-2 |
| ITF M25 Castelo Branco | 2023/07/16 09:00 | Joao Dinis Silva v Leonardo Taddia | 3-6,1-6 |
| ITF M25 Brasov | 2023/07/04 06:55 | Bogdan Pavel v Leonardo Taddia | 6-4,6-1 |
| ITF M25 Brasov | 2023/07/03 07:45 | Leonardo Taddia v Caspar Schuetze | 6-4,7-5 |
| ITF M25 Cattolica | 2023/06/19 09:00 | Leonardo Taddia v Christian Fellin | 6-3,5-7,6-10 |
| ITF M25 Cattolica | 2023/06/18 10:35 | Leonardo Taddia v Artsiom Sinitsyn | 6-0,6-0 |