Round: 62 Ground: Hardcourt outdoor
| ITF Egypt F11 | 2018/03/24 11:00 | Joao Giannella v Philip Sikman | 5-7,2-6 |
| ITF Egypt F10 | 2018/03/17 08:00 | Petr Hajek v Joao Giannella | 6-0,6-0 |
| ITF Portugal F4 | 2018/03/10 16:30 | Yann Marti v Joao Giannella | 6-1,6-2 |
| ITF Portugal F3 | 2018/03/06 14:00 | Joao Giannella v Bastien Kolly | 2-6,4-6 |
| ITF Portugal F2 Qual | 2018/02/24 12:30 | Marc Dijkhuizen v Joao Giannella | 6-2,7-5 |
| ITF Peru F2 | 2017/12/17 16:00 | Alejandro Mendoza v Joao Giannella | 6-0,6-4 |
| ITF Peru F1 | 2017/12/11 17:00 | Boris Arias v Joao Giannella | 6-4,6-3 |
| ITF Brazil F3 | 2017/11/19 13:30 | Petr Arkhipov v Joao Giannella | 6-2,6-2 |
| ITF Greece F5 | 2018/03/24 07:30 | Calin Manda v Oscar Matias Leiva Biason | 6-2,6-1 |
| ITF Greece F3 | 2018/03/10 07:30 | Herman Meeuwes Mattheo Knoop v Oscar Matias Leiva Biason | 6-2,7-6 |
| ITF Chile F3 | 2017/12/03 17:00 | Martin Facundo Carrizo v Oscar Matias Leiva Biason | 6-7,6-1,6-3 |
| ITF Chile F2 | 2017/11/25 13:00 | Juan Bautista Otegui v Oscar Matias Leiva Biason | 6-1,6-2 |
| ITF Bolivia F3 Qual | 2017/09/30 16:00 | Oscar Matias Leiva Biason v Felipe Derdoy | 1-6,3-6 |
| ITF Bolivia F2 Qual | 2017/09/23 16:00 | Oscar Matias Leiva Biason v Ignacio Carou | 1-6,1-6 |
| ITF Austria F6 | 2017/08/05 07:00 | Oscar Matias Leiva Biason v Yanik Kaelin | 1-6,1-6 |
| ITF Austria F4 Qual | 2017/07/22 10:00 | Edward Hubner v Oscar Matias Leiva Biason | 6-3,6-4 |