| 31 ago 2026 | Macias Pino, Diego 2510 | Sierra Vallina, Lionel 2397 | ½-½ | A13 English Opening: Agincourt Defense | CECLUB PRIMERA 26 | 54 | Ver |
| 30 ago 2026 | Sierra Vallina, Lionel 2397 | Naiditsch, Arkadij 2574 | ½-½ | C55 Italian Game: Two Knights Defense, Modern Bishop's Opening | CECLUB PRIMERA 26 | 43 | Ver |
| 29 ago 2026 | Mirzoev, Azer 2401 | Sierra Vallina, Lionel 2397 | 1-0 | D37 Queen's Gambit Declined: Barmen Variation | CECLUB PRIMERA 26 | 71 | Ver |
| 28 ago 2026 | Sierra Vallina, Lionel 2397 | Korneev, Oleg 2429 | ½-½ | C54 Italian Game: Classical Variation, Giuoco Pianissimo | CECLUB PRIMERA 26 | 32 | Ver |
| 25 ago 2026 | Sierra Vallina, Lionel 2397 | Bendayan Claros, Aaron 2292 | ½-½ | B30 Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | ABSOLUTO | 31 | Ver |
| 24 ago 2026 | Garigorta Martinez, Ibai 2217 | Sierra Vallina, Lionel 2397 | 0-1 | C02 French Defense: Advance Variation, Euwe Variation | ABSOLUTO | 72 | Ver |
| 23 ago 2026 | Sierra Vallina, Lionel 2397 | Chicote Sagredo, Hugo 2137 | ½-½ | C55 Italian Game: Two Knights Defense, Modern Bishop's Opening | ABSOLUTO | 94 | Ver |
| 22 ago 2026 | Prado Acebo, Ines 2203 | Sierra Vallina, Lionel 2397 | ½-½ | A13 English Opening: Romanishin Gambit | ABSOLUTO | 28 | Ver |
| 21 ago 2026 | Sierra Vallina, Lionel 2397 | Diaz Mino, Daniel 2280 | ½-½ | B31 Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | ABSOLUTO | 45 | Ver |
| 20 ago 2026 | Gavilan Diaz, Mario 2251 | Sierra Vallina, Lionel 2397 | ½-½ | B50 Sicilian Defense: Delayed Alapin Variation, with d6 | ABSOLUTO | 30 | Ver |
| 19 ago 2026 | Sierra Vallina, Lionel 2397 | Moral Garcia, Serafin 2216 | ½-½ | C54 Italian Game: Classical Variation, Giuoco Pianissimo | ABSOLUTO | 62 | Ver |
| 18 ago 2026 | Silva Lucena, Cristian 2224 | Sierra Vallina, Lionel 2397 | ½-½ | C02 French Defense: Advance Variation, Paulsen Attack | ABSOLUTO | 54 | Ver |
| 17 ago 2026 | Sierra Vallina, Lionel 2397 | Alvarado Ascanio, Francisco 2113 | 1-0 | C02 French Defense: Advance Variation, Paulsen Attack | ABSOLUTO | 32 | Ver |
| 16 ago 2026 | Sierra Vallina, Lionel 2364 | Ivanchuk, Vasyl 2630 | 0-1 | C02 French Defense: Advance Variation, Euwe Variation | CE RAPIDOS | 44 | Ver |
| 16 ago 2026 | Sierra Vallina, Lionel 2364 | Lacasa Diaz, Oriol 2185 | ½-½ | B30 Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | CE RAPIDOS | 93 | Ver |
| 16 ago 2026 | Garcia Fernandez, Victor 2007 2204 | Sierra Vallina, Lionel 2364 | ½-½ | D05 Queen's Pawn Game: Colle System | CE RAPIDOS | 25 | Ver |
| 16 ago 2026 | Ibarra Jerez, Jose Carlos 2528 | Sierra Vallina, Lionel 2364 | 1-0 | B61 Sicilian Defense: Richter-Rauzer Variation, Modern Variation | CE RAPIDOS | 45 | Ver |
| 15 ago 2026 | Sierra Vallina, Lionel 2317 | Camacho Collados, Jose 2187 | 0-1 | B30 Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | Relampago | 41 | Ver |
| 15 ago 2026 | Sierra Vallina, Lionel 2317 | Ibarra Jerez, Jose Carlos 2535 | 0-1 | B30 Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | Relampago | 19 | Ver |
| 8 ago 2026 | Marcos Rodriguez, Raul 2078 | Sierra Vallina, Lionel 2397 | ½-½ | B51 Sicilian Defense: Moscow Variation | Campeonato de España 2026 | Sub-18 | 37 | Ver |