Stadium: Court 8 (Tamms.) Round: 54 Ground: Hardcourt indoor
| ITF M15 Vilnius | 2019/07/08 07:00 | Mateusz Terczynski v Roberts Grinvalds | 7-6,6-2 |
| ITF USA F30 | 2018/11/07 16:45 | Juan A H Serrano v Roberts Grinvalds | 6-4,6-2 |
| ITF USA F29 | 2018/10/27 16:30 | Roberts Grinvalds v Timo Stodder | 3-6,6-4,3-6 |
| ITF Latvia F1 | 2018/08/02 10:40 | Ronald Slobodchikov v Roberts Grinvalds | 3-6,6-4,6-3 |
| ITF Latvia F1 | 2018/08/01 07:00 | Roberts Grinvalds v Ivan Liutarevich | 6-1,6-1 |
| ITF Latvia F1 | 2018/07/31 10:00 | Daniel Soyfer v Roberts Grinvalds | 6-3,3-6,4-6 |
| ITF Latvia F1 | 2018/07/29 07:00 | Roberts Grinvalds v Tomas Vaise | 4-6,6-3,6-4 |
| ITF Latvia F1 | 2018/07/28 07:00 | Roberts Grinvalds v Mohammad Khaled Abou Khamis | 6-0,6-0 |
| ITF M15 Parnu | 2019/07/15 08:30 | Juho Kantola v Roni Mikael Hietaranta | 2-6,2-6 |
| ITF Finland F4 | 2018/11/13 12:50 | Roni Mikael Hietaranta v Evgeny Tyurnev | 6-0,2-6,3-6 |
| ITF Estonia F3 | 2018/11/07 12:05 | Roni Mikael Hietaranta v Aliaksandr Liaonenka | 4-6,7-6,5-7 |
| ITF Estonia F3 | 2018/11/06 11:00 | Roni Mikael Hietaranta v Martins Rocens | 6-4,6-4 |
| ITF Finland F3 | 2018/08/13 08:15 | Lorenzo Bocchi v Roni Mikael Hietaranta | 6-1,6-2 |
| ITF Finland F2 | 2018/08/08 10:05 | Patrik Niklas-Salminen v Roni Mikael Hietaranta | 6-3,6-3 |
| ITF Finland F2 Qual | 2018/08/05 10:25 | Roni Mikael Hietaranta v Jason Sormunen | 6-2,6-2 |
| ITF Finland F2 Qual | 2018/08/04 10:00 | Karl Kiur Saar v Roni Mikael Hietaranta | 4-6,6-1,4-6 |