Stadium: Court 4 Round: 25 Ground: Clay
| Challenger Tampere | 2018/07/21 13:55 | Kristjan Tamm v Nik Razborsek | 6-2,3-6,6-7 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/04/12 17:25 | Nik Razborsek v Hamou, Maxime | 7-6,2-6,2-6 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/04/11 10:20 | Nik Razborsek v Bossel, Adrien | 7-6,6-2 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/04/10 14:30 | Nik Razborsek v Alexander Donski | 6-3,7-6 |
| ITF - M15 Opatija | 2019/03/30 12:00 | Mate Valkusz v Nik Razborsek | 6-1,6-1 |
| ITF - M15 Opatija | 2019/03/29 11:55 | Nik Razborsek v Maxime Chazal | 6-7,6-2,6-2 |
| ITF - M15 Opatija | 2019/03/28 09:00 | Nik Razborsek v Aichhorn, Jakob | 6-4,3-6,6-3 |
| ITF - M15 Opatija | 2019/03/26 12:30 | Nik Razborsek v Raspudic, Franjo | 0-6,6-2,6-3 |
| ITF - M15 Porec | 2019/03/15 10:00 | Andrea Pellegrino v Nik Razborsek | 6-0,6-4 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/04/15 13:45 | Kristjan Tamm v Neil Oberleitner | 6-0,6-3 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/04/15 08:00 | Kristjan Tamm v Gatev, Maximilian | 6-4,6-4 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/04/12 11:00 | Kristjan Tamm v Corentin Denolly | 1-6,5-7 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/04/11 12:20 | Kristjan Tamm v Bayard, Damien | 2-6,7-5,6-3 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/04/10 16:35 | Perchicot, Mathieu v Kristjan Tamm | 6-7,7-6,4-6 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/04/08 14:30 | Kristjan Tamm v Coppini, Alessandro | 6-3,6-2 |
| ITF - M15 Sharm El Sheikh | 2019/03/18 11:30 | Brugnerotto, Marco v Kristjan Tamm | 6-2,6-2 |
| ITF - M15 Sharm El Sheikh | 2019/03/18 08:00 | Presuhn, Bastien v Kristjan Tamm | 6-4,1-6,5-10 |