Stadium: Court 1 Round: 25 Ground: Clay
| ITF M15 Castelo Branco | 2021/07/28 17:15 | Raphael Lambling v Natan Rodrigues | 6-2,6-3 |
| ITF M25 Idanha-A-Nova | 2021/07/20 13:50 | Natan Rodrigues v Luis Faria | 3-6,3-6 |
| ITF M25 Idanha-A-Nova | 2021/07/13 14:15 | Takuto Niki v Natan Rodrigues | 6-2,6-2 |
| ITF M15 Monastir | 2021/04/06 09:00 | Pedro Boscardin Dias v Natan Rodrigues | 6-7,7-6,6-1 |
| ITF M15 Monastir | 2021/03/30 10:30 | Sho Shimabukuro v Natan Rodrigues | 6-3,5-7,6-2 |
| ITF M15 Monastir | 2021/03/18 08:30 | Natan Rodrigues v Yanais Laurent | 3-6,6-4,3-6 |
| ITF M15 Monastir | 2021/03/16 10:25 | Viktor Jovic v Natan Rodrigues | 6-3,6-7,5-7 |
| ITF M15 Heraklion | 2020/11/25 07:30 | Natan Rodrigues v Sho Shimabukuro | 1-6,4-6 |
| ITF M25 Medellin | 2021/09/15 16:35 | Pedro Boscardin Dias v Gustavo Heide | 6-3,3-6,6-3 |
| ITF M15 Ibague | 2021/09/12 15:00 | Gustavo Heide v Alejandro Gomez | 7-6,7-5 |
| ITF M15 Ibague | 2021/09/11 16:30 | Gustavo Heide v Juan Sebastian Gomez | 6-4,6-4 |
| ITF M15 Ibague | 2021/09/10 17:00 | Blu Baker v Gustavo Heide | 6-7,3-6 |
| ITF M15 Ibague | 2021/09/09 16:10 | Pedro Boscardin Dias v Gustavo Heide | 1-6,1-6 |
| ITF M15 Ibague | 2021/09/08 17:00 | Johan A Rodriguez Rodriguez v Gustavo Heide | 6-4,6-7,4-6 |
| ITF M15 Cairo | 2021/08/04 10:55 | Gustavo Heide v Mathys Erhard | 0-6,1-6 |
| ITF M15 Cairo | 2021/07/30 08:00 | Juan Bautista Torres v Gustavo Heide | 7-6,6-1 |