Stadium: Sparkassen Court Round: 25 Ground: Clay
| Challenger Medellin | 2023/06/26 22:20 | Alex Barrena v Gonzalo Lama | 7-6,4-6,4-6 |
| Challenger Cali | 2023/06/19 16:00 | Alex Barrena v Juan Ignacio Londero | 2-6,4-6 |
| Challenger Cali | 2023/06/18 19:10 | Alex Barrena v Nicolas Buitrago | 6-2,6-4 |
| ITF M25 Rome | 2023/06/02 09:00 | Alex Barrena v Luca Potenza | 6-7,4-6 |
| ITF M25 Rome | 2023/06/01 09:00 | Oliver Crawford v Alex Barrena | 6-0,2-6,1-6 |
| ITF M25 Rome | 2023/05/31 09:40 | Alex Barrena v Gianmarco Ferrari | 6-1,6-3 |
| ITF M25 Rome | 2023/05/30 16:25 | Alex Barrena v Niccolo Ciavarella | 6-4,6-2 |
| ITF M15 Warmbad-Villach | 2023/05/27 09:00 | Alex Barrena v Tim Handel | 2-6,6-4,6-3 |
| 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 M15 Duffel | 2023/06/11 12:30 | Adrian Oetzbach v Thorben Sannen | 6-2,6-1 |
| ITF M15 Vaasa | 2023/06/08 09:40 | Adrian Oetzbach v Jonathan Mridha | 6-2,3-6,3-6 |