Stadium: Centre Court Round: 27 Ground: Clay
| ITF M15 Alkmaar | 2023/06/29 10:30 | 니부어, 리얀 v Teun Rozenberg | 6-4,6-7,6-3 |
| ITF M15 Alkmaar | 2023/06/28 11:40 | 니부어, 리얀 v Nicolas Kobelt | 6-2,6-1 |
| ITF M15 Duffel | 2023/06/17 11:15 | 니부어, 리얀 v 잔, 제레미 | 2-6,1-6 |
| ITF M15 Duffel | 2023/06/16 11:00 | 니부어, 리얀 v 스펠레, 존 | 6-4,4-6,6-3 |
| ITF M15 Duffel | 2023/06/15 10:00 | 니부어, 리얀 v 골라, 안드레아 | 2-6,6-1,6-3 |
| ITF M15 Duffel | 2023/06/14 09:50 | 니부어, 리얀 v 스첼, 니클라스 | 6-7,6-2,6-4 |
| ITF M25 La Nucia | 2023/06/01 13:00 | 니부어, 리얀 v 올리엘, 야사이 | 2-6,1-6 |
| ITF M25 La Nucia | 2023/06/01 07:00 | 니부어, 리얀 v 칼데스, 자임 | 6-2,6-7,6-1 |
| ITF M15 Alkmaar | 2023/06/27 11:10 | Sander Jong v 델라베도바, 마튜 | 6-4,6-2 |
| Saarlouis, Singles Qualifying M-ITF-GER-07A | 2023/06/25 12:00 | Sander Jong v von Der Schulenburg, Jeffrey | 6-1,6-0 |
| Saarlouis, Singles Qualifying M-ITF-GER-07A | 2023/06/24 11:00 | Joao Fonseca v Sander Jong | 4-6,3-6 |
| Saarlouis, Singles Qualifying M-ITF-GER-07A | 2023/06/23 12:30 | 웨스트라트, 로데비직 v Sander Jong | 3-6,7-5,2-6 |
| Saarlouis, Singles Qualifying M-ITF-GER-07A | 2023/06/22 12:30 | Sander Jong v 나프, 알렉스 | 6-4,6-3 |
| Saarlouis, Singles Qualifying M-ITF-GER-07A | 2023/06/20 11:35 | Yannik Kelm v Sander Jong | 1-6,0-6 |
| ITF M15 Duffel | 2023/06/15 10:00 | 잔, 제레미 v Sander Jong | 7-6,6-4 |
| ITF M15 Duffel | 2023/06/13 10:00 | 피산, 톰 v Sander Jong | 3-6,1-6 |