Stadium: Hard 17 Round: 25 Ground: Hardcourt outdoor
| ITF M15 - Heraklion | 2023/10/26 11:00 | Oleg Prihodko v Stefanos Sakellaridis | 3-6,6-1,6-2 |
| ITF M15 - Heraklion | 2023/10/25 10:25 | Alexander Orlov v Stefanos Sakellaridis | 3-6,4-6 |
| ITF M15 - Heraklion | 2023/10/17 09:00 | Stefanos Sakellaridis v Dax Donders | 4-6,1-6 |
| ITF M25 - Pazardzhik | 2023/09/28 11:15 | Stefanos Sakellaridis v Nikola Kolyachev | 4-6,4-6 |
| ITF M25 - Pazardzhik | 2023/09/26 08:30 | Stefanos Sakellaridis v Viktor Kirov | 6-2,6-2 |
| ATP Zhuhai | 2023/09/19 03:00 | Stefanos Sakellaridis v Luke Saville | 5-7,7-6,4-6 |
| Challenger Guangzhou | 2023/09/11 04:30 | Stefanos Sakellaridis v Arjun Kadhe | 3-6,1-6 |
| Challenger Zhangjiagang | 2023/08/31 04:40 | Stefanos Sakellaridis v Yusuke Takahashi | 3-6,1-6 |
| ITF M25 - Heraklion | 2023/10/31 07:00 | Guy Den Heijer v Joshua Charlton | 6-4,7-5 |
| ITF M25 - Heraklion | 2023/10/30 09:30 | Guy Den Heijer v Gabriel Matuszewski | 6-1,6-4 |
| ITF M15 - Heraklion | 2023/10/25 08:55 | Mario G Fernandez v Guy Den Heijer | 6-1,6-3 |
| ITF M15 - Heraklion | 2023/10/24 06:30 | Guy Den Heijer v Joshua Charlton | 7-6,7-5 |
| ITF M15 - Heraklion | 2023/10/23 10:30 | Guy Den Heijer v Vojtech Mares | 5-7,7-6,10-6 |
| ITF M15 - Heraklion | 2023/10/19 08:45 | Guy Den Heijer v Gabriel Decamps | 2-6,4-6 |
| ITF M25 - Santa Margherita | 2023/09/25 08:00 | Niels Visker v Guy Den Heijer | 5-7,6-4,11-9 |
| ITF M25 - Santa Margherita | 2023/09/24 08:00 | Niccolo Ciavarella v Guy Den Heijer | 6-2,3-6,7-10 |