Stadium: Court 3 Round: 25 Ground: Clay
| 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 |
| ITF M25 Medellin | 2021/09/12 15:00 | Pedro Sakamoto v Joao Eduardo Schiessl | 6-2,6-1 |
| ITF M15 Ibague | 2021/09/05 15:00 | Joao Eduardo Schiessl v Juan Sebastian Osorio | 4-6,6-2,4-10 |
| ITF M25 Rio do Sul | 2021/10/21 16:10 | Nicolas Zanellato v Oscar Jose Gutierrez | 6-7,6-1,6-1 |
| ITF M25 Rio do Sul | 2021/10/20 16:40 | Amnon Felipe v Oscar Jose Gutierrez | 0-6,4-6 |
| ITF M25 Lima | 2021/10/12 16:20 | Franco Roncadelli v Oscar Jose Gutierrez | 6-0,7-6 |
| ITF M25 Lima | 2021/10/09 15:00 | Oscar Jose Gutierrez v Daniel Dutra Da Silva | 5-7,7-5,4-6 |
| ITF M25 Lima | 2021/10/08 19:10 | Oscar Jose Gutierrez v Conner Huertas Del Pino | 6-3,7-5 |
| ITF M25 Lima | 2021/10/07 17:55 | Oscar Jose Gutierrez v Boris Arias | 6-1,6-4 |
| ITF M25 Lima | 2021/10/05 17:05 | Oscar Jose Gutierrez v Jorge Panta | 6-2,6-2 |
| Challenger Lima | 2021/09/27 15:00 | Johan Nikles v Oscar Jose Gutierrez | 6-4,6-2 |