Stadium: Court 9 Round: 25 Ground: Hardcourt outdoor
| ITF M25 Aparecida De Goiania | 2021/11/09 15:35 | Fernando Yamacita v Matias Zukas | 2-6,1-6 |
| ITF M15 Brasilia | 2021/11/04 14:55 | Marcelo Zormann v Fernando Yamacita | 6-2,6-1 |
| ITF M15 Brasilia | 2021/11/03 16:50 | Bryan Aguiar Kuntz v Fernando Yamacita | 3-6,2-6 |
| ITF M15 Cancun | 2021/10/12 15:30 | Alexander Bernard v Fernando Yamacita | 7-6,6-2 |
| ITF M15 Cancun | 2021/10/05 14:00 | Fernando Yamacita v Federico Agustin Gomez | 3-6,6-2,10-12 |
| ITF M15 Cancun | 2021/10/04 14:00 | Fernando Yamacita v Pietro Mugelli | 6-4,6-0 |
| ITF M15 Cancun | 2021/10/03 15:30 | Fernando Yamacita v Babji Siva Atturu | 6-4,6-0 |
| ITF M15 Cancun | 2021/09/26 15:00 | Fernando Yamacita v Emil Reinberg | 3-6,4-6 |