| Latvia Int. | 2023/09/02 06:20 | Mads Emil Monke v Kian-Yu Oei | W | 1-2 |
| Latvia Int. | 2023/09/01 12:00 | Finn Achthoven v Kian-Yu Oei | W | 1-2 |
| Nouvelle Aquitane Future Series | 2023/07/07 15:45 | Ethan Rose v Kian-Yu Oei | L | 2-0 |
| Nouvelle Aquitane Future Series | 2023/07/07 10:30 | Diogo Gloria v Kian-Yu Oei | W | 0-2 |
| Lithuanian Int. | 2023/06/11 10:00 | Matthias Kicklitz v Kian-Yu Oei | L | 2-0 |
| Lithuanian Int. | 2023/06/11 07:20 | Nicolas A. Mueller v Kian-Yu Oei | W | 0-2 |
| Lithuanian Int. | 2023/06/10 15:30 | Kian-Yu Oei v Henrikho Kho Wibowo | W | 2-0 |
| Lithuanian Int. | 2023/06/10 09:20 | Prahdiska B Shujiwo v Kian-Yu Oei | W | 1-2 |
| Latvia Int. | 2023/09/02 07:10 | Tauri Kilk v Valentin Singer | W | 1-2 |
| Latvia Int. | 2023/09/01 12:30 | Viacheslav Yakovlev v Valentin Singer | W | 0-2 |
| Nouvelle Aquitane Future Series | 2023/07/07 12:40 | Valentin Singer v Thomas Fourcade | L | 0-2 |
| Nouvelle Aquitane Future Series | 2023/07/07 08:45 | Valentin Singer v Gustav Bjorkler | W | 2-0 |
| Nantes Int. - Kwalifikacje | 2023/06/15 10:20 | Collins Valentine Filimon v Valentin Singer | L | 2-1 |
| Lithuanian Int. | 2023/06/09 13:15 | Henrikho Kho Wibowo v Valentin Singer | L | 2-1 |
| Austrian Open - Kwalifikacje | 2023/05/26 07:40 | Valentin Singer v Jia Jie Tan | L | 0-2 |
| Austrian Open - Kwalifikacje | 2023/05/25 14:35 | Valentin Singer v Orijit Chaliha | W | 2-0 |