Stadium: Court 2 Round: 44 Ground: Hardcourt indoor
| ITF M25 Esch/Alzette | 2023/07/17 08:35 | Lodewijk Weststrate v Jim Hendrikx | 6-0,6-4 |
| ITF M25 The Hague | 2023/07/02 10:30 | Stijn Paardekooper v Lodewijk Weststrate | 6-2,6-4 |
| ITF M15 Alkmaar | 2023/06/28 16:20 | Lodewijk Weststrate v Mees Rottgering | 6-7,6-7 |
| Saarlouis, Singles Qualifying M-ITF-GER-07A | 2023/06/23 12:30 | Lodewijk Weststrate v Sander Jong | 3-6,7-5,2-6 |
| Saarlouis, Singles Qualifying M-ITF-GER-07A | 2023/06/22 11:30 | Lodewijk Weststrate v Guy Den Heijer | 7-6,6-4 |
| Saarlouis, Singles Qualifying M-ITF-GER-07A | 2023/06/21 17:05 | Asrawy, Amr v Lodewijk Weststrate | 5-7,1-6 |
| Saarlouis, Singles Qualifying M-ITF-GER-07A | 2023/06/19 09:30 | Jurriaan Bol v Lodewijk Weststrate | 0-6,5-7 |
| Saarlouis, Singles Qualifying M-ITF-GER-07A | 2023/06/18 09:00 | Johann, Lars v Lodewijk Weststrate | 4-6,2-6 |
| ITF M25 Esch/Alzette | 2023/07/17 08:10 | Ole Bredschneijder v Felix Einig | 3-6,6-3,9-11 |
| ITF M15 Duffel | 2023/06/11 11:00 | Felix Einig v David Quayle | 5-7,3-6 |
| ITF - M15 Meerbusch | 2023/04/23 08:00 | Felix Einig v Talic, Zaharije-Zak | 5-7,5-7 |
| ITF - M15 Lons-le-Saunier | 2023/04/02 15:20 | Pontico, Hugo v Felix Einig | 6-1,6-4 |
| ITF - M15 Héraklion | 2023/03/20 09:00 | Jonas Trinker v Felix Einig | 7-5,6-2 |
| ITF M25 Heraklion | 2023/03/13 08:00 | Elgin Khoeblal v Felix Einig | 6-2,6-7,10-7 |
| ITF M25 Heraklion | 2023/03/12 07:00 | Zuckerman, Niv v Felix Einig | 4-6,1-6 |
| ITF M25 Manacor | 2023/01/16 14:00 | Felix Einig v Pablo Trochu | 1-6,2-6 |