| Nouvelle Aquitane Future Series | 2023/07/07 09:20 | Nicolas A. Mueller v Brian Holtschke | L | 2-0 |
| Lithuanian Int. | 2023/06/10 14:30 | Nicolas A. Mueller v Brian Holtschke | L | 2-0 |
| Lithuanian Int. | 2023/06/10 09:05 | Brian Holtschke v Tino Daoudal | W | 2-1 |
| Lithuanian Int. | 2023/06/09 12:40 | Harry Huang v Brian Holtschke | W | 1-2 |
| Bonn Int. | 2023/06/02 08:10 | Henrikho Kho Wibowo v Brian Holtschke | L | 2-0 |
| Bonn Int. | 2023/06/01 12:00 | Brian Holtschke v Amaury Lievre | W | 2-1 |
| Austrian Open Qual | 2023/05/25 10:20 | Brian Holtschke v Tino Daoudal | L | 0-2 |
| Slovenia Open Quals | 2023/05/18 07:20 | Brian Holtschke v Chen Xun Zhao | L | 1-2 |
| Nouvelle Aquitane Future Series | 2023/07/07 08:45 | Valentin Singer v Gustav Bjorkler | L | 2-0 |
| Nouvelle Aquitane Future Series Qual | 2023/07/06 15:45 | Patrick Zbinden v Gustav Bjorkler | W | 0-2 |
| Nouvelle Aquitane Future Series Qual | 2023/07/06 10:30 | Archie Bult v Gustav Bjorkler | W | 0-2 |
| Nouvelle Aquitane Future Series Qual | 2023/07/06 08:20 | Michael Karamoy v Gustav Bjorkler | W | 0-2 |
| Swedish Open | 2023/05/12 08:20 | Kuan-Ting Lin v Gustav Bjorkler | L | 2-0 |
| Swedish Open Qual | 2023/05/11 13:25 | Andrei Don v Gustav Bjorkler | W | 0-2 |
| Swedish Open Qual | 2023/05/11 08:10 | Axel Henrik Parkhøi v Gustav Bjorkler | W | 0-1 |
| Portugal Int. Qual | 2023/03/08 16:50 | David K Kristensen v Gustav Bjorkler | L | 2-0 |