Stadium: Court 2 Round: 54 Ground: Clay
| ITF Chile F3 | 2018/11/26 15:30 | Mauricio Echazu v Daniel Antonio Nunez | 7-5,6-3 |
| ITF M15 Lima | 2019/07/09 14:00 | Oscar Matias Leiva Biason v Agustin Maria Gascia | 4-6,3-6 |
| ITF M15 Curitiba | 2019/06/24 18:30 | Oscar Matias Leiva Biason v Bernardo A P E Oliveira | 4-6,6-4,4-10 |
| ITF M15 Sao JDR Preto | 2019/06/17 16:00 | Oscar Matias Leiva Biason v Agustin Riquelme Coppari | 3-6,5-7 |
| ITF M15 Bucaramanga | 2019/04/22 20:30 | Oscar Matias Leiva Biason v Joao M Nusdeo | 2-6,6-7 |
| ITF M15 Guayaquil | 2019/04/15 15:00 | Oscar Matias Leiva Biason v Joao M Nusdeo | 4-6,2-6 |
| ITF Chile F3 | 2018/11/24 15:00 | Oscar Gabriel Ortiz v Oscar Matias Leiva Biason | 6-2,6-4 |
| ITF Chile F2 | 2018/11/17 16:00 | Oscar Matias Leiva Biason v Mateo Berne | 6-3,3-6,3-6 |
| ITF Chile F1 | 2018/11/12 13:00 | Oscar Matias Leiva Biason v Federico Juan Aguilar | 1-6,3-6 |