| Challenger Santa Fe | 2025/06/09 13:00 | Lorenzo Joaquin Rodriguez v John Sperle | 7-6,6-4 |
| Challenger Santa Fe | 2025/06/08 13:00 | Franco Ribero v John Sperle | 4-6,3-6 |
| Challenger Heilbronn | 2025/06/01 13:10 | Henri Squire v John Sperle | 6-1,6-3 |
| ITF M15 La Nucia | 2025/05/28 09:30 | Joao Domingues v John Sperle | 3-6,6-3,6-2 |
| ITF M25 Mataro | 2025/05/23 10:00 | John Sperle v Bernabe Zapata Miralles | 6-1,6-7,6-7 |
| ITF M25 Mataro | 2025/05/22 09:30 | John Sperle v Lucas Bouquet | 6-4,1-6,6-2 |
| ITF M25 Mataro | 2025/05/21 11:00 | Svyatoslav Gulin v John Sperle | 1-6,3-6 |
| ITF M15 Oegstgeest | 2025/05/02 09:00 | John Sperle v Kilian Feldbausch | 0-6,4-6 |
| ITF M15 Klagenfurt | 2025/06/02 09:30 | Piet Luis Pinter v Mees Rottgering | 4-6,0-0 |
| ITF M15 Warmbad-Villach | 2025/05/26 09:30 | Piet Luis Pinter v Tim Handel | 3-6,2-6 |
| ITF M15 Szentendre | 2025/05/15 11:31 | Dominik Kellovsky v Piet Luis Pinter | 6-1,6-1 |
| ITF M15 Szentendre | 2025/05/14 13:39 | Nico Hipfl v Piet Luis Pinter | 2-6,2-6 |
| ITF M15 Shymkent | 2025/04/22 10:33 | Leyton Rivera v Piet Luis Pinter | 1-6,7-5,1-0 |
| ITF M15 Antalya | 2025/02/13 08:30 | Neil Oberleitner v Piet Luis Pinter | 6-1,6-4 |
| ITF M15 Antalya | 2025/02/12 09:42 | Piet Luis Pinter v Gokberk Saritas | 6-0,6-7,6-1 |
| ITF M15 Antalya | 2024/12/15 07:00 | Piet Luis Pinter v Fabio De Michele | 6-4,6-7,2-10 |