Stadium: Court 2 Round: 25 Ground: Clay
| Challenger Istanbul | 2019/09/09 09:35 | Marsel Ilhan v Mert Naci Turker | 6-4,6-3 |
| ITF M15 - Antalya | 2019/05/15 07:15 | Mert Naci Turker v Marsel Ilhan | 4-6,2-6 |
| ITF M15 - Antalya | 2020/03/01 07:00 | Mert Naci Turker v Luciano Tacchi | 3-6,6-4,6-10 |
| ITF M25 - Antalya | 2020/02/25 08:30 | Yanki Erel v Mert Naci Turker | 5-7,6-2,6-0 |
| ITF M15 - Antalya | 2020/02/18 07:00 | Mert Naci Turker v Peter Makk | 2-6,6-7 |
| ITF M15 - Antalya | 2020/02/05 09:05 | Filip Cristian Jianu v Mert Naci Turker | 6-2,6-1 |
| ITF M15 - Antalya | 2020/01/29 12:55 | Justin Eleveld v Mert Naci Turker | 7-5,6-4 |
| ITF M15 - Antalya | 2020/01/21 10:25 | Mert Naci Turker v Sandro Kopp | 4-6,3-6 |
| ITF M15 - Antalya | 2020/01/15 10:50 | Alberto Cammarata v Mert Naci Turker | 6-2,0-6,6-1 |
| ITF M15 - Antalya | 2020/01/08 09:25 | Mert Naci Turker v Filip Cristian Jianu | 2-6,3-6 |
| Challenger Istanbul | 2020/10/19 11:00 | Sebastian Ofner v Marsel Ilhan | 6-7,6-4,6-4 |
| ITF M15 - Antalya | 2020/03/12 07:20 | Marsel Ilhan v Peter Torebko | 1-6,2-6 |
| ITF M15 - Antalya | 2020/03/10 09:00 | Marsel Ilhan v Burak Bilgin | 6-0,6-3 |
| ITF M25 - Antalya | 2020/02/26 08:00 | Marsel Ilhan v Holger Rune | 4-6,4-6 |
| ITF M25 - Nonthaburi | 2020/02/06 05:05 | Marsel Ilhan v Khumoyun Sultanov | 6-7,6-7 |
| ITF M25 - Nonthaburi | 2020/02/04 05:50 | Marsel Ilhan v Chanchai Sookton-Eng | 6-1,7-6 |
| ITF M25 - Nonthaburi | 2020/01/26 05:30 | Marsel Ilhan v Chien Hsun Lo | 3-6,4-6 |
| ITF M15 - Antalya | 2019/10/25 07:00 | Marsel Ilhan v Lorenzo Musetti | 2-6,1-6 |