Stadion: Court 2 Round: 29 Ground: Clay
| ITF - M25 - Prag | 2021/10/09 08:25 | Timo Stodder v Khumoyun Sultanov | 6-4,3-6,5-7 |
| ITF - M25 - Prag | 2021/10/08 09:00 | Khumoyun Sultanov v Marek Gengel | 3-6,6-3,6-4 |
| ITF - M25 - Prag | 2021/10/07 08:00 | Khumoyun Sultanov v Andrew Paulson | 4-6,6-3,6-2 |
| ITF - M25 - Prag | 2021/10/06 08:00 | Khumoyun Sultanov v Vojtech Mares | 7-5,6-0 |
| ITF - M25 - Falun | 2021/10/01 14:30 | Khumoyun Sultanov v Valentin Royer | 2-6,3-6 |
| ITF - M25 - Falun | 2021/09/30 16:15 | Daniel Little v Khumoyun Sultanov | 4-6,2-6 |
| ITF - M25 - Falun | 2021/09/29 11:00 | Yusuke Takahashi v Khumoyun Sultanov | 2-6,0-6 |
| ITF - M25 - Falun | 2021/09/28 11:00 | Vladimir Ivanov v Khumoyun Sultanov | 1-6,6-7 |
| ITF - M25 - Prag | 2021/10/09 08:30 | Tobias Simon v David Poljak | 6-7,4-6 |
| ITF - M25 - Prag | 2021/10/08 09:00 | David Poljak v Sanjar Fayziev | 6-4,6-2 |
| ITF - M25 - Prag | 2021/10/07 11:55 | David Poljak v Pavel Nejedly | 6-3,3-6,6-2 |
| ITF - M25 - Prag | 2021/10/06 15:20 | David Poljak v Leopold Zima | 6-4,6-1 |
| Challenger - Sibiu | 2021/09/26 07:30 | Yan Bondarevskiy v David Poljak | 7-5,3-6,6-3 |
| Challenger - Bukarest | 2021/09/19 09:45 | David Poljak v Uladzimir Ignatik | 4-6,1-6 |
| Challenger - Banja Luka | 2021/09/07 08:00 | David Poljak v Tomas Martin Etcheverry | 2-6,5-7 |
| Challenger - Banja Luka | 2021/09/06 11:35 | David Poljak v Mircea-Alexandru Jecan | 6-3,6-4 |