Stadium: Court 1 Round: 28 Ground: Hardcourt indoor
| ITF M25 Heraklion | 2023/11/04 08:00 | Arthur Gea v Niels Visker | 6-3,7-6 |
| ITF M25 Heraklion | 2023/11/03 08:00 | Niels Visker v Yshai Oliel | 6-1,7-6 |
| ITF M25 Heraklion | 2023/11/02 08:00 | Niels Visker v Sidane Pontjodikromo | 7-5,6-4 |
| ITF M25 Heraklion | 2023/10/31 10:20 | Cezar Cretu v Niels Visker | 4-6,5-7 |
| ITF M15 Heraklion | 2023/10/24 06:30 | Niels Visker v Adam Heinonen | 6-4,3-6,6-10 |
| ITF M15 Heraklion | 2023/10/23 06:30 | Niels Visker v Dimitris Sakellaridis | 6-2,2-6,10-8 |
| ITF M15 Heraklion | 2023/10/17 09:00 | Niels Visker v Gabriel Decamps | 5-7,2-6 |
| ITF M25 Santa Margherita | 2023/09/27 13:35 | Federico Iannaccone v Niels Visker | 6-7,7-6,7-6 |
| Challenger Knoxville | 2023/11/06 20:10 | Evgeny Karlovskiy v Alexander Cozbinov | 6-4,7-6 |
| Challenger Knoxville | 2023/11/05 23:45 | Evgeny Karlovskiy v Lucas Renard | 6-2,7-5 |
| Challenger Charlottesville | 2023/10/30 14:00 | Evgeny Karlovskiy v Alafia Ayeni | 6-7,4-6 |
| Challenger Charlottesville | 2023/10/29 15:25 | Evgeny Karlovskiy v Cooper Williams | 7-6,2-6,6-4 |
| Challenger Ortisei | 2023/10/22 08:00 | Evgeny Karlovskiy v Patrik Rikl | 4-6,0-6 |
| Challenger Bratislava | 2023/10/08 13:10 | Illya Marchenko v Evgeny Karlovskiy | 6-2,7-6 |
| Challenger Mouilleron le Captif | 2023/10/05 08:30 | Giulio Zeppieri v Evgeny Karlovskiy | 6-0,6-3 |
| Challenger Mouilleron le Captif | 2023/10/03 08:30 | Evgeny Karlovskiy v Marc-Andrea Huesler | 6-3,6-4 |