Stadium: Court 4 Round: 26 Ground: Clay
| 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 |
| ITF - M15 Porec | 2019/03/14 09:00 | Nik Razborsek v Nejedly, Pavel | 6-4,6-4 |
| ITF - M15 Porec | 2019/03/12 10:25 | Nik Razborsek v Nagy, Peter | 6-4,6-3 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/04/10 13:55 | Ghorbel, Anis v Bossel, Adrien | 6-7,6-7 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/04/08 15:00 | Bossel, Adrien v Rossi, Mattia | 6-2,7-6 |
| ITF Switzerland F5 | 2018/09/03 15:45 | Heliovaara, Harri v Bossel, Adrien | 6-3,6-0 |
| ITF Switzerland F4 | 2018/08/28 15:15 | Bossel, Adrien v Florent Bax | 1-6,6-7 |
| ITF Switzerland F3 | 2018/08/23 15:30 | Jacopo Berrettini v Bossel, Adrien | 7-5,5-7,6-3 |
| ITF Switzerland F3 | 2018/08/22 11:30 | Bossel, Adrien v Gomez, Lucas | 7-6,6-7,6-3 |
| Challenger Lisbon Qual | 2018/05/12 13:00 | Bossel, Adrien v Alejandro Davidovich Fokina | 1-6,1-6 |
| Challenger Glasgow Qual | 2018/04/29 15:00 | Heliovaara, Harri v Bossel, Adrien | 2-6,7-6,6-4 |