Stadium: S & S Court Round: 27 Ground: Clay
| ITF M25 Marburg | 2023/07/06 10:30 | Adrian Oetzbach v Buvaysar Gadamauri | 3-6,6-4,6-3 |
| ITF M25 Marburg | 2023/07/05 16:40 | Alex Barrena v Adrian Oetzbach | 6-7,5-7 |
| ITF M25 Marburg | 2023/07/04 08:00 | Adrian Oetzbach v Anthony Genov | 6-2,6-1 |
| ITF M15 Alkmaar | 2023/06/28 09:00 | Michiel de Krom v Adrian Oetzbach | 6-2,4-6,6-1 |
| ITF M15 Alkmaar | 2023/06/26 08:00 | Adrian Oetzbach v Tomi Van den Ham | 6-4,6-2 |
| ITF M15 Alkmaar | 2023/06/25 10:00 | Adrian Oetzbach v Miko Wassermann | 6-0,6-2 |
| ITF M15 Duffel | 2023/06/13 12:00 | Jeremy Jahn v Adrian Oetzbach | 6-2,6-1 |
| ITF M15 Duffel | 2023/06/12 10:00 | Adrian Oetzbach v Lodewijk Weststrate | 7-5,1-6,12-10 |
| ITF M25 Marburg | 2023/07/06 11:40 | Martin Krumich v Michael Agwi | 7-5,7-6 |
| ITF M25 Marburg | 2023/07/04 11:55 | Hazem Naw v Martin Krumich | 4-6,2-6 |
| ITF M15 Celje | 2023/06/28 15:45 | Blaz Rola v Martin Krumich | 7-5,6-7,6-4 |
| ITF M15 Store | 2023/06/23 10:35 | Bor Artnak v Martin Krumich | 7-6,6-1 |
| ITF M15 Store | 2023/06/22 06:55 | Martin Krumich v Timofey Stepanov | 6-2,6-4 |
| ITF M15 Store | 2023/06/21 09:35 | Pavel Nejedly v Martin Krumich | 2-6,3-6 |
| ITF M25 Jablonec Nad Nisou | 2023/05/31 13:00 | Martin Krumich v Timo Stodder | 0-6,2-6 |
| ITF M25 Most | 2023/05/24 09:20 | Michael Vrbensky v Martin Krumich | 6-4,6-3 |