Stadium: Court 1 Round: 27 Ground: Hardcourt outdoor
| ITF M15 Monastir | 2023/11/02 10:20 | Jan Kupcic v John Sperle | 2-6,6-7 |
| ITF M15 Monastir | 2023/10/31 08:00 | Nicolas Tepmahc v John Sperle | 4-6,3-6 |
| Challenger Hamburg | 2023/10/15 16:00 | Tristan Lamasine v John Sperle | 2-6,6-2,6-0 |
| ITF M25 Sabadell | 2023/09/28 08:55 | Ryan Nijboer v John Sperle | 6-3,6-1 |
| ITF M25 Sabadell | 2023/09/27 10:15 | John Sperle v Alejandro Juan Mano | 7-5,6-3 |
| ITF M25 Sabadell | 2023/09/26 07:55 | John Sperle v Arthur Bonnaud | 6-4,6-3 |
| ITF M25 Sabadell | 2023/09/25 07:30 | John Sperle v Jiri Cizek | 6-0,6-0 |
| ITF M25 Sabadell | 2023/09/24 07:30 | John Sperle v Carlos Giraldi | 6-0,6-3 |
| ITF M15 Monastir | 2023/11/02 10:55 | Fabio De Michele v Olaf Pieczkowski | 4-6,4-6 |
| ITF M15 Monastir | 2023/11/01 08:00 | Diego F Flores v Olaf Pieczkowski | 4-6,6-2,2-6 |
| ITF M15 Monastir | 2023/10/29 08:30 | Olaf Pieczkowski v Alberto Barroso Campos | 1-6,1-6 |
| ITF M15 Monastir | 2023/10/28 08:30 | Guido Ivan Justo v Olaf Pieczkowski | 6-1,6-7,3-6 |
| ITF M15 Monastir | 2023/10/27 08:30 | Adrien Gobat v Olaf Pieczkowski | 4-6,5-7 |
| ITF M15 Monastir | 2023/10/26 08:30 | Louis Tessa v Olaf Pieczkowski | 2-6,6-7 |
| ITF M15 Monastir | 2023/10/25 12:30 | Yuta Kikuchi v Olaf Pieczkowski | 6-7,4-6 |
| ITF M15 Doha | 2023/10/12 13:00 | Marat Sharipov v Olaf Pieczkowski | 6-7,6-2,6-2 |