Stadium: Pista 2 Round: 14 Ground: Hardcourt outdoor
| ITF M25 Kassel | 2023/07/12 09:55 | Milan Welte v Robert Strombachs | 6-3,6-2 |
| Challenger Milan | 2023/07/02 12:05 | Lucio Carnevalle v Robert Strombachs | 7-5,7-6 |
| Challenger Poznan | 2023/06/18 08:30 | Robert Strombachs v Sebastian Gima | 3-6,5-7 |
| Challenger Perugia | 2023/06/11 12:45 | Renzo Olivo v Robert Strombachs | 6-4,6-1 |
| ITF M25 Cordoba | 2023/06/09 08:00 | Robert Strombachs v Georgii Kravchenko | 5-7,0-6 |
| Challenger Troisdorf | 2023/06/02 16:10 | Pavel Kotov v Robert Strombachs | 2-6,6-3,6-4 |
| Challenger Troisdorf | 2023/06/01 10:30 | Hernan Casanova v Robert Strombachs | 4-6,0-6 |
| Challenger Troisdorf | 2023/05/30 08:00 | Robert Strombachs v Jozef Kovalik | 7-5,7-6 |
| ITF M25 Roda de Bara | 2023/07/13 16:25 | Cem Ilkel v Alberto Barroso Campos | 6-1,6-1 |
| ITF M25 Mungia | 2023/06/20 12:05 | Alex Martinez v Alberto Barroso Campos | 6-4,2-6,6-3 |
| ITF M25 Martos | 2023/06/14 08:00 | Fajing Sun v Alberto Barroso Campos | 6-2,6-4 |
| ITF M25 Cordoba | 2023/06/06 09:20 | Alberto Barroso Campos v David Jorda Sanchis | 2-6,2-6 |
| Challenger Oeiras | 2023/05/14 10:25 | Alessandro Giannessi v Alberto Barroso Campos | 6-1,6-3 |
| ITF M25 Sanxenxo | 2023/04/26 10:00 | John Echeverria v Alberto Barroso Campos | 6-3,6-2 |
| ITF M15 Telde | 2023/04/20 10:30 | Alberto Barroso Campos v Kai Lemstra | 5-7,6-3,1-6 |
| ITF M15 Telde | 2023/04/19 09:30 | Alberto Barroso Campos v Dominik Recek | 7-5,6-3 |