| ITF Egypt F14 | 04/16 08:30 | 54 | Bogdan Didenko v Oscar Matias Leiva Biason | Walkover | |
| ITF Egypt F14 | 04/15 08:00 | 54 | Yannick Lenaerts v Oscar Matias Leiva Biason | Retired | |
| ITF Egypt F13 | 04/08 08:00 | 62 | Issam Haitham Taweel v Oscar Matias Leiva Biason | 6-2,6-0 | |
| ITF Egypt F12 | 03/31 08:00 | 62 | Joao Giannella v Oscar Matias Leiva Biason | 6-2,6-1 | |
| ITF Greece F5 | 03/24 07:30 | 62 | Calin Manda v Oscar Matias Leiva Biason | 6-2,6-1 | |
| ITF Greece F3 | 03/10 07:30 | 62 | Herman Meeuwes Mattheo Knoop v Oscar Matias Leiva Biason | 6-2,7-6 | |
| ITF Chile F3 | 12/03 17:00 | 44 | Martin Facundo Carrizo v Oscar Matias Leiva Biason | 6-7,6-1,6-3 | |
| ITF Chile F2 | 11/25 13:00 | 54 | Juan Bautista Otegui v Oscar Matias Leiva Biason | 6-1,6-2 | |
| ITF Bolivia F3 Qual | 09/30 16:00 | 62 | Oscar Matias Leiva Biason v Felipe Derdoy | 1-6,3-6 | |
| ITF Bolivia F2 Qual | 09/23 16:00 | 62 | Oscar Matias Leiva Biason v Ignacio Carou | 1-6,1-6 | |
| ITF Austria F6 | 08/05 07:00 | 62 | Oscar Matias Leiva Biason v Yanik Kaelin | 1-6,1-6 | |
| ITF Austria F4 Qual | 07/22 10:00 | 44 | Edward Hubner v Oscar Matias Leiva Biason | 6-3,6-4 | |
| ITF Germany F8 Qual | 07/16 08:30 | 62 | Yohei Otsuka v Oscar Matias Leiva Biason | 6-2,6-2 | |
| ITF Tunisia F16 | 04/23 09:00 | 44 | Maxime Pauwels v Oscar Matias Leiva Biason | 6-0,6-3 | |
| ITF Tunisia F16 | 04/22 09:00 | 44 | Kevin Portmann v Oscar Matias Leiva Biason | 0-6,0-6 | |
| ITF Tunisia F15 | 04/15 08:00 | 62 | Rodrigo Budnik v Oscar Matias Leiva Biason | 6-4,6-2 | |
| ITF Tunisia F14 | 04/08 08:30 | 62 | Loick Bruandet v Oscar Matias Leiva Biason | 6-1,6-3 | |
| ITF Tunisia F9 | 04/01 09:00 | 44 | Alberto Berbegal Moreno v Oscar Matias Leiva Biason | 6-1,4-6,6-1 | |
| ITF Tunisia F12 | 03/25 11:00 | 62 | Oscar Matias Leiva Biason v Matteo De Vincentis | 3-6,0-6 | |
| Challenger Santiago Qual | 03/04 16:55 | 45 | David Fleming v Oscar Matias Leiva Biason | 6-3,6-2 | |
| ITF Chile F8 | 12/17 19:45 | 62 | Matias Soto v Oscar Matias Leiva Biason | 6-1,6-3 | |
| ITF Chile F6 | 12/03 14:00 | 62 | Oscar Matias Leiva Biason v Jorge Abde Celis | 4-6,3-6 | |
| ITF Chile F5 | 11/27 16:00 | 44 | Mauricio A-Guzman v Oscar Matias Leiva Biason | 6-2,6-1 | |
| ITF USA F9 Qual | 02/26 13:30 | 60 | Dennis Nevolo v Oscar Matias Leiva Biason | 6-1,6-1 | |
| ITF USA F8 Qual | 02/19 17:30 | 60 | Oliver Crawford v Oscar Matias Leiva Biason | 6-2,6-0 | |
| ITF USA F7 Qual | 02/12 18:00 | 60 | Oscar Matias Leiva Biason v Damon Gooch | 0-6,1-6 | |
| ITF Chile F7 | 10/12 13:00 | 62 | Oscar Matias Leiva Biason v David Fleming | 0-6,0-6 | |
| ITF Bolivia F1 | 09/05 13:00 | 62 | Oscar Matias Leiva Biason v Fernando Yamacita | 2-6,0-6 | |
| ITF Mexico F8 | 06/20 18:30 | - | Oscar Matias Leiva Biason v Santiago Hinojosa | 3-6,6-7 | |
| ITF Mexico F7 | 06/13 14:00 | - | Jose Daniel Bendeck v Oscar Matias Leiva Biason | 6-1,6-2 |