| Game | Result | Opening | Date |
|---|---|---|---|
| Narayanan S L (2555) – Sierra Vallina, Lionel (2379) | 1/2-1/2 | Queen's Gambit Declined: Janowski Variation | 2026-09-02 |
| Sierra Vallina, Lionel (2379) – Barseghyan, Harutyun (2433) | 1/2-1/2 | Caro-Kann Defense: Advance Variation | 2026-09-01 |
| Macias Pino, Diego (2510) – Sierra Vallina, Lionel (2397) | 1/2-1/2 | English Opening: Agincourt Defense | 2026-08-31 |
| Sierra Vallina, Lionel (2397) – Naiditsch, Arkadij (2574) | 1/2-1/2 | Italian Game: Two Knights Defense, Modern Bishop's Opening | 2026-08-30 |
| Mirzoev, Azer (2401) – Sierra Vallina, Lionel (2397) | 1-0 | Queen's Gambit Declined: Barmen Variation | 2026-08-29 |
| Sierra Vallina, Lionel (2397) – Korneev, Oleg (2429) | 1/2-1/2 | Italian Game: Classical Variation, Giuoco Pianissimo | 2026-08-28 |
| Sierra Vallina, Lionel (2397) – Bendayan Claros, Aaron (2292) | 1/2-1/2 | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | 2026-08-25 |
| Garigorta Martinez, Ibai (2217) – Sierra Vallina, Lionel (2397) | 0-1 | French Defense: Advance Variation, Euwe Variation | 2026-08-24 |
| Sierra Vallina, Lionel (2397) – Chicote Sagredo, Hugo (2137) | 1/2-1/2 | Italian Game: Two Knights Defense, Modern Bishop's Opening | 2026-08-23 |
| Prado Acebo, Ines (2203) – Sierra Vallina, Lionel (2397) | 1/2-1/2 | English Opening: Romanishin Gambit | 2026-08-22 |
| Sierra Vallina, Lionel (2397) – Diaz Mino, Daniel (2280) | 1/2-1/2 | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | 2026-08-21 |
| Gavilan Diaz, Mario (2251) – Sierra Vallina, Lionel (2397) | 1/2-1/2 | Sicilian Defense: Delayed Alapin Variation, with d6 | 2026-08-20 |
| Sierra Vallina, Lionel (2397) – Moral Garcia, Serafin (2216) | 1/2-1/2 | Italian Game: Classical Variation, Giuoco Pianissimo | 2026-08-19 |
| Silva Lucena, Cristian (2224) – Sierra Vallina, Lionel (2397) | 1/2-1/2 | French Defense: Advance Variation, Paulsen Attack | 2026-08-18 |
| Sierra Vallina, Lionel (2397) – Alvarado Ascanio, Francisco (2113) | 1-0 | French Defense: Advance Variation, Paulsen Attack | 2026-08-17 |
| Sierra Vallina, Lionel (2364) – Lacasa Diaz, Oriol (2185) | 1/2-1/2 | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | 2026-08-16 |
| Garcia Fernandez, Victor 2007 (2204) – Sierra Vallina, Lionel (2364) | 1/2-1/2 | Queen's Pawn Game: Colle System | 2026-08-16 |
| Ibarra Jerez, Jose Carlos (2528) – Sierra Vallina, Lionel (2364) | 1-0 | Sicilian Defense: Richter-Rauzer Variation, Modern Variation | 2026-08-16 |
| Sierra Vallina, Lionel (2364) – Ivanchuk, Vasyl (2630) | 0-1 | French Defense: Advance Variation, Euwe Variation | 2026-08-16 |
| Marcos Rodriguez, Raul (2078) – Sierra Vallina, Lionel (2397) | 1/2-1/2 | Sicilian Defense: Moscow Variation | 2026-08-08 |
| Sierra Vallina, Lionel (2397) – Tabuenca Mendataurigoitia, Daniel (2365) | 0-1 | Caro-Kann Defense: Advance Variation, Tal Variation | 2026-08-07 |
| Fuentes Guinot, Alejandro (2291) – Sierra Vallina, Lionel (2397) | 0-1 | Queen's Gambit Declined | 2026-08-07 |
| Sierra Vallina, Lionel (2397) – Atares Buisan, Sergio (2250) | 1/2-1/2 | Petrov's Defense: Millennium Attack | 2026-08-06 |
| Sierra Vallina, Lionel (2397) – Navarro Martinez, Victor (2256) | 1/2-1/2 | French Defense: Advance Variation, Paulsen Attack | 2026-08-05 |
| Conon, Catalin (2203) – Sierra Vallina, Lionel (2397) | 0-1 | Queen's Pawn Game: Colle System | 2026-08-05 |
| Kowalski Rubiales, Nicholas (2234) – Sierra Vallina, Lionel (2397) | 1/2-1/2 | Catalan Opening: Closed | 2026-08-04 |
| Lara Mezcua, Hector (2003) – Sierra Vallina, Lionel (2397) | 0-1 | English Opening: Neo-Catalan | 2026-08-03 |
| Sierra Vallina, Lionel (2397) – Aleksanyan, Ara (2086) | 1-0 | Bishop's Opening: Paulsen Defense | 2026-08-03 |
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