Stadium: Rado Center Court Round: 25 Ground: Clay
| ITF - M25 Trimbach | 2021/03/09 09:00 | Mika Brunold v Jonas Schaer | 3-6,6-1,10-3 |
| ITF M25 Muttenz | 2023/08/15 12:25 | Jonas Schaer v Leonardo Taddia | 6-2,6-3 |
| 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 |
| Zug, Switzerland | 2023/07/25 08:00 | Mika Brunold v Stefano Travaglia | 3-6,2-6 |
| Gstaad, Switzerland | 2023/07/15 08:30 | Jurij Rodionov v Mika Brunold | 6-1,7-6 |
| ITF M25 Klosters | 2023/07/07 09:55 | Benjamin Lock v Mika Brunold | 1-6,6-4,6-2 |
| ITF M25 Klosters | 2023/07/06 10:30 | Francois Musitelli v Mika Brunold | 6-3,6-7,4-6 |
| ITF M25 Klosters | 2023/07/05 10:15 | Staeheli, Luca v Mika Brunold | 6-7,7-6,4-6 |
| Saarlouis, Singles Qualifying M-ITF-GER-07A | 2023/06/21 09:25 | Mika Brunold v Marcel Zielinski | 3-6,1-6 |
| ITF M15 Duffel | 2023/06/14 08:00 | Amaury Raynel v Mika Brunold | 6-4,7-6 |
| ITF M25 Jablonec Nad Nisou | 2023/05/31 11:40 | Martin Damm v Mika Brunold | 6-1,7-6 |