stadio: Court 5 Round: 54 Ground: Clay
| ITF M15 Meerbusch | 2023/04/26 09:00 | Marcel Zielinski v John Sperle | 7-6,7-5 |
| ITF M15 Meerbusch | 2023/04/25 08:00 | Philipp Pavlenko v John Sperle | 2-6,0-6 |
| ITF M15 Meerbusch | 2023/04/24 10:00 | Dawid Wisniewski v John Sperle | 0-6,2-6 |
| ITF M15 Meerbusch | 2023/04/24 08:00 | Torben Steinorth v John Sperle | 3-6,3-6 |
| ITF M15 Antalya | 2023/04/06 09:50 | Dragos Nicolae Madaras v John Sperle | 6-3,6-3 |
| ITF M15 Antalya | 2023/04/05 10:25 | Tom Gentzsch v John Sperle | 4-6,2-6 |
| ITF M15 Antalya | 2023/04/03 12:40 | Tom Schonenberg v John Sperle | 3-6,6-4,3-10 |
| ITF M15 Antalya | 2023/04/02 07:00 | Luca Hesselmann v John Sperle | 0-6,2-6 |
| ITF M25 Bodrum | 2023/05/21 07:30 | Kuzma Gomziakov v Suleyman Deniz Gursoy | 6-2,7-5 |