Stadium: Court 6 Round: 54 Ground: Clay
| ITF M15 Madrid | 2023/12/07 10:35 | Alejandro M Kretzer v Pol Martin Tiffon | 2-6,3-6 |
| ITF M15 Madrid | 2023/12/05 10:00 | Colin Markes v Alejandro M Kretzer | 6-1,1-6,5-7 |
| ITF M15 Madrid | 2023/11/29 12:00 | Alejandro M Kretzer v John Echeverria | 4-6,5-7 |
| ITF M15 Valencia | 2023/11/17 08:55 | Alejandro M Kretzer v Carlos Gimeno Valero | 3-6,1-6 |
| ITF M15 Valencia | 2023/11/16 11:30 | Alejandro Manzanera Pertusa v Alejandro M Kretzer | 4-6,6-2,3-6 |
| ITF M15 Valencia | 2023/11/15 08:20 | Alejandro M Kretzer v David Naharro | 6-4,2-6,7-5 |
| ITF M25 Benicarlo | 2023/11/06 09:00 | Nil Regas Luis v Alejandro M Kretzer | 6-3,2-6,10-4 |
| ITF M25 Benicarlo | 2023/11/05 08:30 | Peetu Pohjola v Alejandro M Kretzer | 3-6,3-6 |
| ITF M15 Manacor | 2024/01/14 16:00 | Yannick Penkner v Nils Pottbecker | 4-6,3-6 |
| ITF M25 Madrid | 2023/09/10 13:00 | Pablo Manzano Lapuerta v Yannick Penkner | 6-4,7-6 |
| ITF M15 Kottingbrunn | 2023/08/13 12:00 | Attila Dominik Boros v Yannick Penkner | 6-0,6-3 |
| ITF M25 Kramsach | 2023/07/24 11:00 | Yannick Penkner v Luca Parenti | 1-6,3-6 |
| ITF M25 Kramsach | 2023/07/24 07:30 | Morris Kipcak v Yannick Penkner | 4-6,6-2,6-10 |
| ITF M15 Warmbad-Villach | 2023/05/21 10:00 | Yannick Penkner v Igor Dudun | 4-6,4-6 |
| ITF M15 Telde | 2023/04/10 07:00 | Michael Zhu v Yannick Penkner | 6-1,6-2 |
| ITF M15 Telde | 2023/04/09 09:00 | Yannick Penkner v Jack Karlsson Winstrand | 6-3,7-6 |