| WTT Feeder Westchester | 05/12 22:15 | - | Jules Rolland v Jonas Promberger | L | 4-0 | |
| WTT Feeder Fremont | 05/06 21:00 | - | Aditya Godhwani v Jonas Promberger | L | 4-1 | |
| WTT Feeder Doha | 03/13 13:35 | - | Jonas Promberger v Hsin-Yu Li | L | 0-3 | |
| Francia Pro A liga | 02/04 19:49 | - | Aidos Kenzhigulov v Jonas Promberger | L | 3-0 | |
| Francia Pro A liga | 02/04 17:49 | - | Amirreza Abbasi v Jonas Promberger | L | 3-0 | |
| WTT Feeder Düsseldorf | 01/17 13:30 | - | Cedric Tschanz v Jonas Promberger | L | 3-0 | |
| WTT Feeder Düsseldorf | 01/12 10:45 | - | Jonas Promberger v Tobias Hippler | L | 2-3 | |
| Challenger Ochsenhausen | 11/30 10:40 | - | Alexander Valuch v Jonas Promberger | L | 3-0 | |
| Challenger Ochsenhausen | 11/30 09:20 | - | Evgueni Chtchetinine v Jonas Promberger | L | 3-2 | |
| Challenger Ochsenhausen | 11/29 19:00 | - | Dauud Cheaib v Jonas Promberger | L | 3-0 | |
| Challenger Ochsenhausen | 11/29 17:00 | - | Florian Bluhm v Jonas Promberger | L | 3-0 | |
| Challenger Ochsenhausen | 11/29 13:30 | - | Taehyun Kim v Jonas Promberger | L | 3-0 | |
| Challenger Ochsenhausen | 11/29 12:10 | - | Andrei Putuntica v Jonas Promberger | L | 3-0 | |
| Challenger Ochsenhausen | 11/29 07:30 | - | Patrik Juhasz v Jonas Promberger | L | 3-0 | |
| Oman Open - női U21 | 11/10 18:00 | - | Leo De Nodrest v Jonas Promberger | L | 4-1 | |
| Oman Open - női U21 | 11/10 13:50 | - | Nicolas Degros v Jonas Promberger | L | 4-0 | |
| WTT Contender Lasko | 11/02 10:20 | - | Zhe Yu Clarence Chew v Jonas Promberger | L | 3-0 | |
| Czech Open | 08/22 10:30 | - | Daniele Pinto v Jonas Promberger | L | 3-1 | |
| Czech Open | 08/21 08:40 | - | Jonas Promberger v Adam Klajber | L | 2-3 |