Stadium: Court 3 Round: 62 Ground: Hardcourt outdoor
| ITF M15 Lambare | 2021/12/15 20:10 | Joao Eduardo Schiessl v Igor Gimenez | 2-6,0-6 |
| ITF M25 Aparecida De Goiania | 2021/11/09 15:00 | Joao Eduardo Schiessl v Valerio Aboian | 6-7,3-6 |
| ITF M15 Brasilia | 2021/11/03 15:50 | Joao Eduardo Schiessl v Oscar Jose Gutierrez | 3-6,5-7 |
| ITF M15 Brasilia | 2021/11/02 12:00 | Joao Eduardo Schiessl v Paulo A S Dos Santos | 6-1,7-5 |
| ITF M25 Rio do Sul | 2021/10/21 17:35 | Ignacio Carou v Joao Eduardo Schiessl | 6-4,6-2 |
| ITF M25 Rio do Sul | 2021/10/19 14:55 | Joao Eduardo Schiessl v Mateus Alves | 6-4,3-6,7-6 |
| ITF M15 Recife | 2021/09/23 13:30 | Nicolas Zanellato v Joao Eduardo Schiessl | 7-5,6-0 |
| ITF M15 Recife | 2021/09/22 14:10 | Joao Eduardo Schiessl v Ignacio Carou | 0-6,6-2,7-6 |