| Haraguchi, Diego Sashaki2235 | 1-0 | Azevedo Junior, Jose Ferreira2182 | Curitiba Chess Open 2026 | 2026 |
| Bueno, Alfe2194 | ½-½ | Haraguchi, Diego Sashaki2235 | Curitiba Chess Open 2026 | 2026 |
| Haraguchi, Diego Sashaki2235 | 1-0 | Campelo, L2104 | Curitiba Chess Open 2026 | 2026 |
| Lima, Vinicius Taishun2119 | ½-½ | Haraguchi, Diego Sashaki2235 | Curitiba Chess Open 2026 | 2026 |
| Haraguchi, Diego Sashaki2235 | 1-0 | Dos Santos, H1990 | Curitiba Chess Open 2026 | 2026 |
| Ferreira, Murilo Batista1901 | 0-1 | Haraguchi, Diego Sashaki2235 | Curitiba Chess Open 2026 | 2026 |
| Haraguchi, Diego Sashaki2187 | ½-½ | Mazetto, S2042 | Brazil Chess - Floripa | 2026 |
| Caceres Benitez, Arturo Eduardo2295 | 1-0 | Haraguchi, Diego Sashaki2187 | Brazil Chess - Floripa | 2026 |
| Haraguchi, Diego Sashaki2187 | 1-0 | Matsuura, E2353 | Brazil Chess - Floripa | 2026 |
| Ribeiro, Dionatan Lua Franzen1967 | 0-1 | Haraguchi, Diego Sashaki2187 | Brazil Chess - Floripa | 2026 |
| Haraguchi, Diego Sashaki2187 | 0-1 | Ibarra, Juan Martin2344 | Brazil Chess - Floripa | 2026 |
| Rebolledo Arias, Julio Cesar1952 | 0-1 | Haraguchi, Diego Sashaki2187 | Brazil Chess - Floripa | 2026 |
| Haraguchi, Diego Sashaki2187 | 1-0 | Candia Gomez, Matias Vicente1913 | Brazil Chess - Floripa | 2026 |
| Fier, A2560 | 1-0 | Haraguchi, Diego Sashaki2187 | Brazil Chess - Floripa | 2026 |
| Haraguchi, Diego Sashaki2187 | 1-0 | De Souza, Joao Francisco Biz1893 | Brazil Chess - Floripa | 2026 |