Stadium: Court 4 Round: 29 Ground: Hardcourt indoor
| ITF M15 - Pärnu | 2021/08/07 09:30 | Ergi Kirkin v Simone Roncalli | 6-1,6-2 |
| ITF M15 - Pärnu | 2021/08/06 08:00 | Ergi Kirkin v Luke Johnson | 6-2,6-1 |
| ITF M15 - Pärnu | 2021/08/05 10:30 | Ergi Kirkin v Alexander Kotzen | 7-6,6-4 |
| ITF M15 - Pärnu | 2021/08/04 08:35 | Ergi Kirkin v Oscar Weightman | 6-2,4-6,7-5 |
| ITF M15 - Vejle | 2021/08/01 10:20 | Ergi Kirkin v August Holmgren | 7-6,6-4 |
| ITF M15 - Vejle | 2021/07/31 07:50 | Ergi Kirkin v Matias Zukas | 6-1,6-4 |
| ITF M15 - Vejle | 2021/07/30 13:00 | Ergi Kirkin v Karl Friberg | 6-3,6-0 |
| ITF M15 - Vejle | 2021/07/30 08:00 | Ergi Kirkin v Alexander Kotzen | 6-2,6-3 |
| ITF M15 - Pärnu | 2021/08/07 09:00 | Mattias Siimar v Vladimir Ivanov | 6-4,3-6,6-2 |
| ITF M15 - Pärnu | 2021/08/05 09:45 | Mattias Siimar v Benjamin Lock | 6-3,6-4 |
| ITF M15 - Pärnu | 2021/08/04 10:15 | Mattias Siimar v Vilius Gaubas | 4-6,6-1,7-5 |
| ITF M15 - Pärnu | 2020/11/06 08:00 | Simon Freund v Mattias Siimar | 1-6,6-3,1-6 |
| ITF M15 - Pärnu | 2020/11/05 11:10 | Mattias Siimar v Kristjan Tamm | 6-3,6-7,6-3 |
| ITF M15 - Pärnu | 2020/11/04 08:00 | Mattias Siimar v Roni Mikael Hietaranta | 6-3,6-2 |
| ITF - M15 East Lansing | 2019/11/20 21:15 | Cannon Kingsley v Mattias Siimar | 7-5,6-2 |
| ITF M15 - Helsinki | 2019/08/20 08:30 | Mattias Siimar v Roni Rikkonen | 5-7,6-0,9-11 |