| ITF M15 Uberlingen | 2024/08/14 14:10 | Justin Engel v Aaron Funk | 6-3,6-7,6-2 |
| ITF M15 Cadolzburg | 2025/01/17 12:00 | Christian Djonov v Aaron Funk | 3-6,4-6 |
| ITF M15 Cadolzburg | 2025/01/16 10:00 | Aaron Funk v Jonas Forejtek | 3-6,6-4,2-0 |
| ITF M15 Cadolzburg | 2025/01/14 11:30 | Aaron Funk v Justin Schlageter | 6-1,6-4 |
| ITF M15 Monastir | 2024/11/07 11:00 | Sebastian Prechtel v Aaron Funk | 6-2,3-6,7-6 |
| ITF M15 Monastir | 2024/11/05 11:15 | Aaron Funk v Kane Bonsach Ganley | 6-7,6-1,6-4 |
| ITF M15 Monastir | 2024/11/04 11:50 | Aaron Funk v Matei Cristian Onofrei | 6-2,6-2 |
| ITF M15 Monastir | 2024/11/03 10:30 | Aaron Funk v Rishabdev Raman | 6-2,6-4 |
| ITF M15 Monastir | 2024/10/27 08:30 | Federico Bove v Aaron Funk | 6-1,4-6,10-8 |
| ITF M15 Cadolzburg | 2025/01/17 14:00 | Kai Wehnelt v Justin Engel | 6-7,2-5 |
| ITF M15 Cadolzburg | 2025/01/16 13:00 | Adrian Oetzbach v Justin Engel | 2-6,3-6 |
| ITF M15 Cadolzburg | 2025/01/15 13:00 | William Jucha v Justin Engel | 3-6,4-6 |
| Challenger Oeiras | 2025/01/05 20:05 | Alexey Vatutin v Justin Engel | 6-3,6-3 |
| Challenger Manzanillo | 2024/11/27 19:00 | Justin Engel v Mohamed Aziz Dougaz | 0-6,2-6 |
| Challenger Manzanillo | 2024/11/25 22:30 | Justin Engel v Valerio Aboian | 6-7,6-4,6-3 |
| Challenger Puerto Vallarta | 2024/11/20 01:35 | Alfredo Perez v Justin Engel | 6-3,3-6,6-4 |
| ATP Almaty | 2024/10/16 06:00 | Justin Engel v Francisco Cerundolo | 4-6,6-7 |