Stadium: Court 5 Round: 25 Ground: Hardcourt outdoor
| ITF - M25 Vale Do Lobo | 2020/10/27 12:30 | Hamou, Maxime v Khumoyun Sultanov | 6-1,6-3 |
| ITF M25 Hamburg | 2020/10/20 11:45 | Timo Stodder v Khumoyun Sultanov | 6-0,6-4 |
| Challenger - Bengaluru | 2020/02/12 07:50 | James Duckworth v Khumoyun Sultanov | 6-4,7-6 |
| Challenger - Bengaluru | 2020/02/10 10:00 | S D Prajwal Dev v Khumoyun Sultanov | 2-6,1-6 |
| Nonthaburi, Singles M-ITF-THA-01A | 2020/02/07 02:30 | Benjamin Bonzi v Khumoyun Sultanov | 6-3,6-2 |
| Nonthaburi, Singles M-ITF-THA-01A | 2020/02/06 05:05 | Marsel Ilhan v Khumoyun Sultanov | 6-7,6-7 |
| Nonthaburi, Singles M-ITF-THA-01A | 2020/02/05 08:25 | Vladyslav Orlov v Khumoyun Sultanov | 1-6,4-6 |
| Nonthaburi, Singles M-ITF-THA-01A | 2020/02/02 02:55 | Khumoyun Sultanov v Matija Pecotic | 1-6,6-3,2-6 |
| ITF M15 Quinta Do Lago | 2020/11/03 09:30 | Volfson, David v Torres, Tiago | 6-3,4-6,10-7 |
| ITF M15 Quinta Do Lago | 2020/11/02 10:00 | Volfson, David v Osgar O'Hoisin | 6-1,6-3 |
| ITF M15 Quinta Do Lago | 2020/11/01 10:00 | Volfson, David v Teixeira, Bernardo | 6-2,6-0 |
| ITF - M25 Vale Do Lobo | 2020/10/27 10:30 | Barrientos, Nicolas v Volfson, David | 6-3,7-5 |
| ITF - M25 Vale Do Lobo | 2020/10/26 14:00 | Minc, Charles v Volfson, David | 3-6,4-6 |
| ITF - M25 Vale Do Lobo | 2020/10/25 14:00 | Keanu Elias Immler v Volfson, David | 3-6,0-6 |
| Drummondville, Canada | 2020/02/18 01:55 | Volfson, David v Baadi, Taha | 3-6,7-5,4-6 |
| ITF M15 Cancun | 2020/02/13 14:00 | Volfson, David v Felix Corwin | 3-6,3-6 |