Stadium: Cancha Central Round: 26 Ground: Clay
| Challenger - Campinas | 2018/09/30 15:30 | Jorge Montero v Andre Miele | 4-6,6-3,3-6 |
| ITF Spain F28 | 2018/09/18 11:00 | Jorge Montero v Pol Martin Tiffon | 3-6,6-3,2-6 |
| Challenger - Stettin | 2018/09/09 09:00 | Jorge Montero v Facundo Arguello | 6-2,3-6,2-6 |
| Challenger Szczecin Qual | 2018/09/08 09:00 | Volodymyr Uzhylovskyi v Jorge Montero | 2-6,0-6 |
| Challenger - Sevilla | 2018/09/01 17:40 | David Perez Sanz v Jorge Montero | 6-7,7-6,6-3 |
| ITF USA F22 Qual | 2018/08/06 14:35 | Jorge Montero v Alex Blumenberg | 4-6,3-6 |
| ITF USA F22 Qual | 2018/08/05 13:30 | Jorge Montero v Yang Liu | 6-2,6-0 |
| ITF Ecuador F2 Qual | 2018/07/30 15:00 | Joseph W. Van Meter v Jorge Montero | 6-1,3-6,6-4 |
| ITF Chile F1 | 2018/11/12 16:00 | Cristopher Kohl v Mirko Martinez | 6-7,0-6 |
| ITF Turkey F33 | 2018/10/25 07:00 | Mirko Martinez v Dante Gennaro | 3-6,2-6 |
| ITF Turkey F33 | 2018/10/23 07:00 | Mirko Martinez v Benjamin Winter Lopez | 6-1,6-2 |
| ITF Switzerland F5 | 2018/09/04 14:30 | Mirko Martinez v Luca Staeheli | 7-6,6-7,5-7 |
| ITF Switzerland F5 | 2018/09/03 08:50 | Mirko Martinez v Nicolas Parizzia | 6-3,6-3 |
| ITF Switzerland F5 | 2018/09/02 11:30 | Mirko Martinez v Yanik Kaelin | 6-2,6-1 |
| ITF Switzerland F4 | 2018/08/28 16:10 | Matteo Martineau v Mirko Martinez | 6-2,6-0 |
| ITF Switzerland F3 | 2018/08/22 09:30 | Mirko Martinez v Juan Pablo Ficovich | 6-7,1-6 |