Stadium: Court 2 Round: 25 Ground: Clay
| ITF M15 LPD Gran Canaria | 2021/04/28 08:30 | Kristjan Tamm v Yan Bondarevskiy | 4-6,2-6 |
| ITF M15 Sibenik | 2021/04/21 07:55 | Kyrian Jacquet v Kristjan Tamm | 3-6,6-1,6-4 |
| ITF M25 Vale Do Lobo | 2021/03/10 15:10 | Kaichi Uchida v Kristjan Tamm | 3-6,6-1,6-0 |
| ITF M25 Faro | 2021/02/28 15:00 | Kristjan Tamm v Rayane Oumaouche | 4-6,7-5,1-10 |
| ITF M25 Vale Do Lobo | 2021/02/24 15:15 | Kristjan Tamm v Gastao Elias | 4-6,4-6 |
| ITF M15 Monastir | 2020/12/13 08:30 | Kristjan Tamm v Artem Dubrivnyy | 4-6,6-3,6-3 |
| ITF M15 Monastir | 2020/12/12 09:30 | Kristjan Tamm v Matias Franco Descotte | 7-6,6-2 |
| ITF M15 Monastir | 2020/12/11 08:00 | Daniele Capecchi v Kristjan Tamm | 1-6,6-2,4-6 |
| ITF M15 Brcko | 2021/05/18 12:00 | Lazar Milicevic v Dusan Rajic | 7-6,6-4 |
| ITF M15 Brcko | 2021/05/18 07:00 | Valentin Lapalu v Dusan Rajic | 1-6,6-3,6-10 |
| ITF M15 Brcko | 2021/05/16 08:15 | Preston Connor v Dusan Rajic | 3-6,0-6 |
| ITF M15 Prijedor | 2021/05/10 09:15 | Dusan Rajic v Lazar Milicevic | 2-6,2-6 |
| ITF M15 Prijedor | 2021/05/09 09:30 | Vladan Tadic v Dusan Rajic | 3-6,4-6 |
| Eastern European Championship | 2020/07/30 11:00 | Milan Drinic v Dusan Rajic | 7-5,6-3 |
| Eastern European Championship | 2020/07/29 08:00 | Matias Zukas v Dusan Rajic | 6-3,6-4 |
| Eastern European Championship | 2020/07/28 08:00 | Cengiz Aksu v Dusan Rajic | 6-7,6-3,4-6 |