Stadion: Court 3 Round: 25 Ground: Carpet indoor
| ITF - M15 - Oberhaching | 2023/02/15 12:25 | Mick Veldheer v Johannes Haerteis | 3-6,6-4,6-4 |
| ITF - M25 - Bath | 2023/02/07 12:10 | George Loffhagen v Johannes Haerteis | 6-3,6-3 |
| Challenger - Koblenz | 2023/01/31 17:35 | Alexey Vatutin v Johannes Haerteis | 7-6,6-1 |
| Challenger - Koblenz | 2023/01/30 10:00 | Jeremy Jahn v Johannes Haerteis | 4-6,4-6 |
| Challenger - Koblenz | 2023/01/29 13:45 | Johannes Haerteis v Andrea Arnaboldi | 6-4,6-4 |
| ITF - M25 - Nussloch | 2023/01/25 11:50 | Johannes Haerteis v Elmar Ejupovic | 5-7,6-7 |
| Challenger - Drummondville | 2022/11/13 21:25 | Evan King v Johannes Haerteis | 7-6,2-6,2-6 |
| Challenger - Calgary | 2022/11/08 23:55 | Johannes Haerteis v Gabriel Decamps | 5-7,4-6 |
| Challenger - Rovereto | 2023/02/22 15:30 | Marcello Serafini v Gauthier Onclin | 4-6,6-2,5-7 |
| Challenger - Rovereto | 2023/02/20 16:55 | Matteo Gigante v Marcello Serafini | 4-6,6-2,4-6 |
| ITF - M15 - Oberhaching | 2023/02/15 11:00 | Luca Wiedenmann v Marcello Serafini | 6-4,6-3 |
| ITF - M25 - Bath | 2023/02/08 13:35 | Aidan Mchugh v Marcello Serafini | 6-1,6-4 |
| ITF - M25 - Sunderland | 2023/01/25 10:00 | James Davis v Marcello Serafini | 6-2,6-2 |
| ITF - M25 - Sheffield | 2023/01/18 13:30 | Marcello Serafini v Daniel Little | 6-7,2-6 |
| ITF - M25 - Sheffield | 2023/01/17 17:25 | Filip Peliwo v Marcello Serafini | 5-7,6-7 |
| ITF - M25 - Veigy-Foncenex | 2023/01/10 17:15 | Mehdi Sadaoui v Marcello Serafini | 6-2,7-6 |