Stadion: Court 4 Round: 44 Ground: Clay
| ITF - M15 - Porec | 2020/03/11 10:30 | Matvey Minin v Roko Horvat | 6-0,6-0 |
| ITF - M15 - Zlatibor | 2019/09/17 07:00 | Mesa Mei v Roko Horvat | 6-2,6-3 |
| ITF - M15 - Zlatibor | 2019/09/16 08:00 | Christos Keisidis v Roko Horvat | 1-6,5-7 |
| ITF - M15 - Zlatibor | 2019/09/15 06:30 | Roko Horvat v Dusan Rajic | 6-2,6-3 |
| ITF - M15 - Baja | 2019/08/15 08:00 | Roko Horvat v Darko Jandric | 6-4,4-6,3-6 |
| ITF - M15 - Baja | 2019/08/13 08:00 | Petar Pjevcevic v Roko Horvat | 0-6,4-6 |
| ITF - M15 - Baja | 2019/08/12 08:00 | Roko Horvat v Martin Zeljenka | 6-3,2-6,10-7 |
| ITF - M25 - Vogau | 2019/08/05 11:00 | Roko Horvat v Deni Zmak | 1-6,3-6 |
| Baltikum - Tennis League | 2020/06/26 12:25 | Robin Erik Parts v Karlis Ozolins | 6-4,6-0 |
| Baltikum - Tennis League | 2020/06/25 12:50 | Gustavs Lukstins v Karlis Ozolins | 6-7,7-6,3-6 |
| Baltikum - Tennis League | 2020/06/24 13:25 | Arturs Kazijevs v Karlis Ozolins | 4-6,6-0,1-6 |
| Baltikum - Tennis League | 2020/06/23 12:25 | Karlis Ozolins v Alexander Georg Mandma | 6-1,6-2 |
| Davis Cup | 2020/03/06 15:00 | Karlis Ozolins v Mohamed Safwat | 6-7,5-7 |
| ITF - M15 - Trnava | 2020/03/01 10:00 | Danylo Kalenichenko v Karlis Ozolins | 6-4,6-4 |
| ITF - M15 - Trnava | 2020/02/29 10:00 | Vitaliy Sachko v Karlis Ozolins | 3-6,5-7 |
| ITF - M15 - Trnava | 2020/02/28 10:00 | Petr Michnev v Karlis Ozolins | 6-7,6-7 |