Stadium: Tammsaare 5 Round: 25 Ground: Hardcourt indoor
| ITF M15 Tbilisi | 2021/05/19 06:00 | Aleksandr Braynin v Tverijonas, Julius | 6-4,7-5 |
| Baltic Tennis League | 2020/06/17 13:30 | Libietis, Mikelis v Tverijonas, Julius | 3-6,1-6 |
| Baltic Tennis League | 2020/06/16 12:30 | Tverijonas, Julius v Siim Troost | 6-4,6-0 |
| Coupe Davis | 2020/03/06 16:40 | Tverijonas, Julius v Joao Sousa | 1-6,3-6 |
| ITF - M25 Sunderland | 2020/02/26 10:00 | Struvay, Eduardo v Tverijonas, Julius | 6-2,6-2 |
| ITF - M25 Sunderland | 2020/02/24 11:45 | Tverijonas, Julius v Ben Jones | 6-7,6-4,10-8 |
| ITF - M25 Sunderland | 2020/02/23 11:40 | Tverijonas, Julius v David Quayle | 6-1,6-2 |
| ITF M25 Glasgow | 2020/02/19 12:30 | Anton Matusevich v Tverijonas, Julius | 6-3,6-1 |
| ITF M15 Vejle | 2021/07/30 08:00 | Ergi Kirkin v Kotzen, Alexander | 6-2,6-3 |
| ITF M15 Vejle | 2021/07/27 09:15 | Ruzgas, Marius v Kotzen, Alexander | 2-6,6-4,3-6 |
| ITF M15 Esch/Alzette | 2021/07/22 13:10 | Tommaso Compagnucci v Kotzen, Alexander | 6-2,6-0 |
| ITF M15 Esch/Alzette | 2021/07/21 10:55 | Kotzen, Alexander v Louis Wessels | 2-6,6-3,6-4 |
| ITF M15 Esch/Alzette | 2021/07/20 11:00 | Dhoe, Benjamin v Kotzen, Alexander | 3-6,4-6 |
| ITF M15 Esch/Alzette | 2021/07/19 09:00 | Kotzen, Alexander v Tibo Colson | 4-6,6-1,10-7 |
| ITF M15 Esch/Alzette | 2021/07/18 07:55 | Kotzen, Alexander v Ernaelsteen, Victor | 6-1,6-4 |
| ITF - M15 Monastir | 2021/06/27 09:00 | Kotzen, Alexander v Noah Lopez | 6-7,6-4,7-10 |