Stadium: Court 5 Round: 14 Ground: Hardcourt outdoor
| Challenger Perugia | 2023/06/11 12:45 | Renzo Olivo v Robert Strombachs | 6-4,6-1 |
| ITF M25 Cordoba | 2023/06/09 08:00 | Robert Strombachs v Georgii Kravchenko | 5-7,0-6 |
| Challenger Troisdorf | 2023/06/02 16:10 | Pavel Kotov v Robert Strombachs | 2-6,6-3,6-4 |
| Challenger Troisdorf | 2023/06/01 10:30 | Hernan Casanova v Robert Strombachs | 4-6,0-6 |
| Challenger Troisdorf | 2023/05/30 08:00 | Robert Strombachs v Jozef Kovalik | 7-5,7-6 |
| Challenger Troisdorf | 2023/05/29 08:30 | Sumit Nagal v Robert Strombachs | 1-6,6-7 |
| Challenger Troisdorf | 2023/05/28 08:30 | Robert Strombachs v Maxime Janvier | 6-3,6-4 |
| ITF M25 Most | 2023/05/25 13:25 | Robert Strombachs v Emilien Voisin | 6-7,6-7 |
| ITF M25 Luzhou | 2023/06/07 02:00 | Jimmy Yang v Ray Ho | 6-4,7-6 |
| ITF M25 Jakarta | 2023/04/27 02:00 | Ray Ho v Brandon Walkin | 4-6,6-7 |
| ITF M25 Jakarta | 2023/04/25 06:05 | Ramkumar Ramanathan v Ray Ho | 0-6,2-6 |
| ITF M25 Jakarta | 2023/04/20 03:50 | Yeongseok Jeong v Ray Ho | 6-4,6-4 |
| ITF M25 Jakarta | 2023/04/19 02:30 | Ray Ho v Andrew Rogers | 6-3,6-4 |
| ITF M25 Jakarta | 2023/04/17 02:25 | Ray Ho v Credit Chaiyarin | 6-2,7-6 |
| ITF M25 Jakarta | 2023/04/12 04:35 | Fajing Sun v Ray Ho | 6-4,6-4 |
| ITF M25 Jakarta | 2023/04/11 02:00 | Ray Ho v Derek Pham | 4-6,6-2,10-4 |