Stadium: CAMPO 4 Round: 45 Ground: Clay
| ITF M15 Guayaquil | 2019/04/15 15:00 | Oscar Matias Leiva Biason v Joao M Nusdeo | 4-6,2-6 |
| 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 |
| 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 M15 Guayaquil | 2019/04/17 14:30 | A.J Catanzariti v Joao M Nusdeo | 6-3,6-0 |
| ITF M15 Guayaquil | 2019/04/15 15:00 | Oscar Matias Leiva Biason v Joao M Nusdeo | 4-6,2-6 |
| ITF M15 Guayaquil | 2019/04/15 15:00 | Raybin Lee Chan v Joao M Nusdeo | 3-6,0-6 |
| ITF M15 - Antalya | 2019/02/04 07:00 | Joao M Nusdeo v Alexandros Skorilas | 3-6,1-6 |
| ITF South Africa F3 Qual | 2018/12/01 07:00 | Joao M Nusdeo v Jean Thirouin | 4-6,1-6 |
| ITF South Africa F2 Qual | 2018/11/25 13:00 | Joao M Nusdeo v Nicholas Bybel | 4-6,0-6 |
| ITF South Africa F2 Qual | 2018/11/24 07:00 | Joao M Nusdeo v Da-niel Kotze | 6-2,6-0 |
| ITF Brazil F9 | 2018/11/13 16:00 | Joao M Nusdeo v Luis Britto | 2-6,0-6 |