Stadium: Court 21 Round: 25 Ground: Clay
| ITF M25 Nonthaburi | 2020/02/06 05:05 | Marsel Ilhan v Khumoyun Sultanov | 6-7,6-7 |
| ITF M15 - Antalya | 2020/12/09 09:45 | Marsel Ilhan v Nerman Fatic | 0-6,5-7 |
| ITF M15 - Antalya | 2020/12/05 07:30 | Felix Gill v Marsel Ilhan | 7-5,6-2 |
| ITF M15 - Antalya | 2020/12/03 11:15 | Marsel Ilhan v Stefan Palosi | 6-4,6-4 |
| ITF M15 - Antalya | 2020/12/01 08:35 | Mert Naci Turker v Marsel Ilhan | 3-6,4-6 |
| 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 M15 - Antalya | 2020/12/09 06:25 | Cengiz Aksu v Khumoyun Sultanov | 6-4,6-3 |
| ITF M15 - Antalya | 2020/12/02 07:00 | Stefan Palosi v Khumoyun Sultanov | 7-5,6-2 |
| ITF M15 Quinta Do Lago | 2020/11/04 12:50 | Khumoyun Sultanov v David Volfson | 3-6,6-7 |
| ITF M25 Vale Do Lobo | 2020/10/27 12:30 | Maxime Hamou v Khumoyun Sultanov | 6-1,6-3 |
| ITF M25 Hamburk | 2020/10/20 11:45 | Timo Stodder v Khumoyun Sultanov | 6-0,6-4 |
| Challenger Bengalúru | 2020/02/12 07:50 | James Duckworth v Khumoyun Sultanov | 6-4,7-6 |
| Challenger Bengalúru | 2020/02/10 10:00 | S D Prajwal Dev v Khumoyun Sultanov | 2-6,1-6 |
| ITF M25 Nonthaburi | 2020/02/07 02:30 | Benjamin Bonzi v Khumoyun Sultanov | 6-3,6-2 |