Round: 44 Ground: Clay
| ITF Chile F1 | 2018/11/12 13:00 | Oscar Matias Leiva Biason v Federico Juan Aguilar | 1-6,3-6 |
| ITF Belgium F7 Qual | 2018/08/05 08:00 | Nico Mertens v Oscar Matias Leiva Biason | 6-1,6-0 |
| ITF Belgium F7 Qual | 2018/08/04 07:30 | Oscar Matias Leiva Biason v Javier A V. Meza | 6-0,6-0 |
| ITF Belgium F6 Qual | 2018/07/28 09:30 | Amaury Delmas v Oscar Matias Leiva Biason | 6-0,6-3 |
| ITF Germany F9 | 2018/07/22 08:00 | Oscar Matias Leiva Biason v Moritz Dettinger | 2-6,1-6 |
| ITF Belgium F4 | 2018/07/14 07:00 | Javier Naser v Oscar Matias Leiva Biason | 6-2,6-0 |
| ITF Germany F7 | 2018/07/09 08:00 | Andres Urrea v Oscar Matias Leiva Biason | 7-6,6-2 |
| ITF Belgium F2 Qual | 2018/06/24 14:50 | Oscar Matias Leiva Biason v Paul Valsecchi | 2-6,1-6 |
| ITF Argentina F9 | 2018/11/13 18:35 | Mateo Berne v Aliaksandr Bulitski | 6-4,4-6,3-6 |
| ITF Argentina F9 | 2018/11/12 17:00 | Mateo Berne v Thiago Cigarran | 7-5,6-4 |
| ITF Argentina F9 | 2018/11/11 13:00 | Nicolas Bianchi v Mateo Berne | 2-6,1-6 |
| ITF Argentina F8 | 2018/11/04 16:30 | Boruch Skierkier v Mateo Berne | 6-3,6-2 |
| ITF Argentina F8 | 2018/11/03 17:00 | Mateo Berne v Tomas Gerini | 2-6,6-3,7-5 |
| ITF Argentina F7 | 2018/10/28 15:30 | Leonardo Aboian v Mateo Berne | 7-6,6-3 |
| ITF Argentina F7 | 2018/10/27 15:30 | Francisco Erramuspe v Mateo Berne | 4-6,6-7 |
| ITF Argentina F6 | 2018/09/15 14:00 | Mateo Berne v Francisco Comesana | 1-6,5-7 |