| De Oliveira, Aquiles Machado2013 | 1-0 | Souza Jr, Helemberg Cubica De1720 | 9th Floripa Open 2023 | 2023 |
| Chang, S2010 | 1-0 | Souza Jr, Helemberg Cubica De1747 | 6th Floripa Open 2020 | 2020 |
| Maranhao, Jose Renato Ruiz1989 | 1-0 | Souza Jr, Helemberg Cubica De1747 | 6th Floripa Open 2020 | 2020 |
| Souza Jr, Helemberg Cubica De1742 | 0-1 | Guimaraes, Artemis Pamela1958 | 1st Niteroi Chess Open | 2019 |
| Ermel, Francisco Roberto2086 | 1-0 | Souza Jr, Helemberg Cubica De1742 | 1st Niteroi Chess Open | 2019 |
| Guimaraes, D2296 | 1-0 | Souza Jr, Helemberg Cubica De1742 | 1st Niteroi Chess Open | 2019 |
| Souza Jr, Helemberg Cubica De1714 | 0-1 | Da Silva, Jefferson Rian Ferreir1936 | 14th American Continental | 2019 |
| Dos Santos, Fabio Alexandre1821 | 0-1 | Souza Jr, Helemberg Cubica De1714 | 14th American Continental | 2019 |
| Hirota da Silva, N1881 | 1-0 | Souza Jr, Helemberg Cubica De1714 | 14th American Continental | 2019 |
| Souza Jr, Helemberg Cubica De1714 | 0-1 | Carvalho, Ce1954 | 14th American Continental | 2019 |
| Portes Junior, Dirceu Atanazio2019 | 1-0 | Souza Jr, Helemberg Cubica De1714 | 14th American Continental | 2019 |
| Souza Jr, Helemberg Cubica De1714 | ½-½ | Mariani, Daniel Brandao2062 | 14th American Continental | 2019 |
| Caceres Vasquez, S2081 | ½-½ | Souza Jr, Helemberg Cubica De1714 | 14th American Continental | 2019 |
| Souza Jr, Helemberg Cubica De1714 | ½-½ | Sanches, R2014 | 14th American Continental | 2019 |
| Carvalho, Gu2162 | 1-0 | Souza Jr, Helemberg Cubica De1714 | 14th American Continental | 2019 |