Stadium: MTA 26 Round: 62 Ground: Clay
| ITF - M25 Antalya | 2023/11/20 09:25 | Christian Fellin v Mert Naci Turker | 3-6,4-6 |
| ITF - M25 Antalya | 2023/11/19 06:30 | Christian Fellin v Simon Norrman | 6-2,7-6 |
| ITF - M25 Antalya | 2023/11/12 07:00 | Erik Tkalenko v Christian Fellin | 2-6,7-5,10-7 |
| ITF - M15 Selva Gardena | 2023/10/29 10:55 | Christian Fellin v Stefano D'Agostino | 6-7,2-6 |
| ITF - M15 Monastir | 2023/10/23 15:00 | Edouard Villoslada v Christian Fellin | 6-4,6-2 |
| ITF - M15 Monastir | 2023/10/23 08:00 | Alexander Grekul v Christian Fellin | 3-6,3-6 |
| ITF - M15 Monastir | 2023/10/16 08:00 | Michal Krajci v Christian Fellin | 6-2,6-2 |
| ITF M15 - Allershausen | 2023/08/28 12:00 | Jannik Maute v Christian Fellin | 6-4,6-3 |
| ITF - M15 Antalya | 2024/01/14 07:00 | Tomas Cortez v Mihai Razvan Marinescu | 4-6,2-6 |
| ITF M25 - Vale Do Lobo | 2023/11/21 12:05 | Goncalo Falcao v Tomas Cortez | 6-1,6-3 |
| ITF M25 - Vale Do Lobo | 2023/11/20 10:30 | Tomas Cortez v Batiste Guerra | 7-6,6-7,10-6 |
| ITF M25 - Vale Do Lobo | 2023/11/12 11:00 | Tomas Cortez v Shiva Swaroop | 6-0,6-2 |
| ITF - M25 Tavira | 2023/10/08 14:30 | Tomas Cortez v Jasin Jakupi | 6-4,6-1 |
| ITF - M25 Vila Real de Santo Antonio | 2023/02/05 10:00 | Miguel Simao v Tomas Cortez | 3-6,3-6 |