Round: 60 Ground: Clay
| ITF USA F40 Qual | 2017/12/03 15:00 | Jonathan Sorbo v Trent Bryde | 2-6,1-6 |
| ITF Canada F8 Qual | 2017/09/17 16:00 | Junior Alexander Ore v Jonathan Sorbo | 6-3,7-6 |
| ITF Canada F7 Qual | 2017/09/09 17:00 | Taha Baadi v Jonathan Sorbo | 6-4,6-3 |
| ITF Canada F6 Qual | 2017/09/02 17:30 | Jordan Parker v Jonathan Sorbo | 7-5,7-6 |
| ITF Canada F1 Qual | 2017/02/26 16:00 | Nathaniel Lammons v Jonathan Sorbo | 6-0,6-3 |
| ITF Canada F8 Qual | 2016/09/10 13:00 | Jonathan Sorbo v Nicholas Bybel | 0-6,2-6 |
| ITF Canada F1 Qual | 2016/02/28 15:00 | Jonathan Sorbo v Robbie Mudge | 2-6,0-6 |
| ITF Canada F1 Qual | 2016/02/27 15:00 | Jonathan Sorbo v Damien Ghader | 6-2,6-3 |
| ITF USA F3 Qual | 2018/01/05 15:30 | Vito Dell'Elba v Mark Oljaca | 0-6,2-6 |
| ITF South Africa F2 Qual | 2017/11/25 07:50 | Mark Oljaca v Loic Ratsaratany | 1-6,7-6,2-6 |
| ITF South Africa F1 Qual | 2017/11/19 10:20 | Mark Oljaca v Joshua Luck | 4-6,2-6 |
| ITF South Africa F1 Qual | 2017/11/18 09:50 | Daniel Du Toit v Mark Oljaca | 2-6,3-6 |
| ITF Greece F9 Qual | 2017/11/12 10:30 | Remy Bertola v Mark Oljaca | 6-0,6-3 |
| ITF Greece F8 | 2017/11/05 12:00 | Mark Oljaca v Rayan Ghedjemis | 4-6,2-6 |
| ITF Greece F7 | 2017/10/28 10:30 | Mark Oljaca v Dan Alexandru Tomescu | 4-6,2-6 |
| ITF Greece F6 | 2017/10/22 11:00 | Mark Oljaca v Joshua Rose | 1-6,3-6 |