Stadium: Court 5 Round: 62 Ground: Clay
| ITF M15 St Petersburg | 2021/04/13 13:45 | Daniil Golubev v Savriyan Danilov | 2-6,1-6 |
| ITF M15 St Petersburg | 2021/04/06 14:25 | Daniil Glinka v Daniil Golubev | 6-0,6-0 |
| ITF M25 Biel | 2021/03/29 10:05 | Daniil Golubev v Maximilian Neuchrist | 1-6,0-6 |
| Challenger St. Petersburg Qual | 2021/03/07 11:20 | Daniil Golubev v Aleksandr Nedovyesov | 1-6,0-6 |
| Challenger St. Petersburg | 2021/02/28 12:15 | Ivan Nedelko v Daniil Golubev | 6-0,6-0 |
| ITF M15 St Petersburg | 2021/02/09 12:40 | Evgeny Tyurnev v Daniil Golubev | 6-1,6-1 |
| ITF M15 St Petersburg | 2021/02/02 11:30 | Karlis Ozolins v Daniil Golubev | 6-3,6-1 |
| ITF M15 Antalya | 2020/11/29 06:00 | Daniil Golubev v Martin Dimitrov | 1-6,0-6 |
| ITF M15 Prijedor | 2021/05/10 08:00 | Elgin Khoeblal v Bozo Barun | 2-6,5-7 |
| ITF M15 Prijedor | 2021/05/09 07:00 | Elgin Khoeblal v Luca Teboul | 6-2,6-0 |
| ITF M15 Sharm El Sheikh | 2021/02/14 14:30 | Elgin Khoeblal v Keisuke Saitoh | 0-6,2-6 |