Stadium: Center Court Round: 14 Ground: Hardcourt outdoor
| ITF M15 Castelo Branco | 2021/07/26 14:00 | Pietro Mugelli v David Marrero | 7-6,7-6 |
| ITF M15 Castelo Branco | 2021/07/25 11:00 | David Marrero v Mario G Fernandez | 4-6,7-5,10-8 |
| ITF M15 Loule | 2020/03/09 13:00 | Gabriele Moghini v David Marrero | 6-3,6-2 |
| ITF M15 Loule | 2020/03/08 10:00 | David Marrero v Goncalo Falcao | 7-5,6-3 |
| ITF M15 Santo Domingo | 2019/12/01 14:00 | David Marrero v Michel-Alexandre Fortin | 6-4,6-4 |
| Challenger Szczecin Qual | 2017/09/10 10:05 | David Marrero v Maxime Tabatruong | 0-6,4-6 |
| ATP Barcelona Qual | 2015/04/18 13:20 | Norbert Gombos v David Marrero | 7-5,6-1 |
| ITF M25 Martos | 2022/06/16 15:30 | Johannes Haerteis v Alberto Barroso Campos | 2-6,6-3,2-6 |
| ITF M25 Martos | 2022/06/15 17:05 | Johannes Haerteis v Aaron Cohen | 6-4,6-4 |
| ITF M15 Cordoba | 2022/06/08 18:40 | Svyatoslav Gulin v Johannes Haerteis | 6-4,6-2 |
| Challenger Tunis | 2022/05/15 09:30 | Shintaro Mochizuki v Johannes Haerteis | 7-5,3-6,6-1 |
| Challenger Heilbronn | 2022/05/08 14:50 | Alexey Vatutin v Johannes Haerteis | 3-6,4-6 |
| Challenger Mauthausen | 2022/05/01 11:45 | Lucas Miedler v Johannes Haerteis | 7-6,6-2 |
| ITF M25 Santa Margherita | 2022/04/27 12:00 | Johannes Haerteis v Gianmarco Ferrari | 5-7,1-6 |
| ITF M25 Santa Margherita | 2022/04/26 15:10 | Johannes Haerteis v Felix Mischker | 5-7,6-3,6-1 |