| Slovenia Open - Qualifikation | 2023/05/17 14:35 | Rune Van Dalm v Brian Holtschke | W | 0-2 |
| Slovenia Open - Qualifikation | 2023/05/17 07:00 | Brian Holtschke v Yanis Gaudin | W | 2-0 |
| Luxembourg Open - Qualifikation | 2023/05/04 14:10 | Finn Achthoven v Brian Holtschke | L | 2-1 |
| Luxembourg Open - Qualifikation | 2023/05/04 10:10 | Jacob Hjorth v Brian Holtschke | W | 1-2 |
| Dutch International - Qualifikation | 2023/04/13 08:15 | Brian Holtschke v Samuel Lee | L | 1-2 |
| Polish Open - Qualifikation | 2023/03/22 16:10 | Brian Holtschke v Collins Valentine Filimon | L | 0-2 |
| Portugal International - Qualifikation | 2023/03/08 18:10 | Yohan Barbieri v Brian Holtschke | W | 0-2 |
| Iceland International | 2023/01/27 14:50 | Brian Holtschke v Valentin Singer | L | 1-2 |
| Slovenia Open - Qualifikation | 2023/05/17 15:00 | Christian Tomic v Chen Xun Zhao | W | 0-2 |
| Slovenia Open - Qualifikation | 2023/05/17 07:00 | Chen Xun Zhao v Hing Long Wong | W | 2-0 |
| China Masters | 2023/03/15 08:15 | Jhuo-Fu Liao v Chen Xun Zhao | L | 2-0 |