| Mar 15, 2026 | Diaz Sepulveda | ½–½ | Gonzalez Gonzalez | 13 CHESS BOSS - CHESS TOUR MAGISTRAL C | English Opening: Anglo-Indian Defense, Anglo-Grünfeld Variation | |
| Mar 15, 2026 | Diaz Sepulveda | 0–1 | Palma Araya | 13 CHESS BOSS - CHESS TOUR MAGISTRAL C | Réti Opening: Anglo-Slav Variation, Bogoljubow Variation, Stonewall Line | |
| Mar 15, 2026 | Farfan Ortiz | 1–0 | Diaz Sepulveda | 13 CHESS BOSS - CHESS TOUR MAGISTRAL C | Sicilian Defense: Velimirovic Attack | |
| Mar 14, 2026 | Diaz Sepulveda | 0–1 | Lodge Bravo | 13 CHESS BOSS - CHESS TOUR MAGISTRAL C | English Opening: Agincourt Defense, Neo-Catalan Declined | |
| Mar 14, 2026 | Pereira Cid | 0–1 | Diaz Sepulveda | 13 CHESS BOSS - CHESS TOUR MAGISTRAL C | Grünfeld Defense: Three Knights Variation, Petrosian System | |
| Mar 14, 2026 | Izquierdo Garces | 1–0 | Diaz Sepulveda | 13 CHESS BOSS - CHESS TOUR MAGISTRAL C | Sicilian Defense: Closed | |
| Mar 13, 2026 | Pino Smythe | ½–½ | Diaz Sepulveda | 13 CHESS BOSS - CHESS TOUR MAGISTRAL C | Sicilian Defense: Sozin Attack, Leonhardt Variation | |
| Jan 14, 2026 | Fuentes Castro | 1–0 | Diaz Sepulveda | III Itt Temuco 2026 | Zukertort Opening: Dutch Variation | |
| Jan 12, 2026 | Diaz Sepulveda | 0–1 | Fernandez | III Itt Temuco 2026 | English Opening: Agincourt Defense, Neo-Catalan Declined | |
| Jan 11, 2026 | Diaz Sepulveda | 0–1 | Escobar Bravo | III Itt Temuco 2026 | English Opening: Agincourt Defense, Neo-Catalan Declined | |
| Jan 10, 2026 | Diaz Sepulveda | 0–1 | Vargas Maliqueo | III Itt Temuco 2026 | English Opening: Symmetrical Variation, Mecking Variation | |
| Nov 11, 2025 | Diaz Sepulveda | ½–½ | Campuzano | XXXII Abierto Internacional ProAm Main Events FIDE. $15.000.000 en premios | King's Indian Defense: Orthodox Variation | |
| Nov 10, 2025 | Rodriguez | ½–½ | Diaz Sepulveda | XXXII Abierto Internacional ProAm Main Events FIDE. $15.000.000 en premios | Indian Defense: Anti-Nimzo-Indian | |
| Nov 9, 2025 | Diaz Sepulveda | 0–1 | Brignoccoli | XXXII Abierto Internacional ProAm Main Events FIDE. $15.000.000 en premios | English Opening: Agincourt Defense, Neo-Catalan Declined | |
| Nov 8, 2025 | Lagares Rodriguez | 1–0 | Diaz Sepulveda | XXXII Abierto Internacional ProAm Main Events FIDE. $15.000.000 en premios | Sicilian Defense: Boleslavsky Variation | |
| Nov 7, 2025 | Diaz Sepulveda | 1–0 | Mirada | XXXII Abierto Internacional ProAm Main Events FIDE. $15.000.000 en premios | English Opening: Agincourt Defense, Neo-Catalan Declined | |
| Nov 6, 2025 | Vizcarra | 0–1 | Diaz Sepulveda | XXXII Abierto Internacional ProAm Main Events FIDE. $15.000.000 en premios | Sicilian Defense: Alapin Variation | |
| Nov 5, 2025 | Diaz Sepulveda | 0–1 | Rojas | XXXII Abierto Internacional ProAm Main Events FIDE. $15.000.000 en premios | Neo-Grünfeld Defense: Classical Variation, Original Defense | |
| Nov 4, 2025 | Pierucci | ½–½ | Diaz Sepulveda | XXXII Abierto Internacional ProAm Main Events FIDE. $15.000.000 en premios | English Opening: Symmetrical Variation, Full Symmetry Line | |
| Nov 3, 2025 | Diaz Sepulveda | 0–1 | Fuentes | XXXII Abierto Internacional ProAm Main Events FIDE. $15.000.000 en premios | English Opening: Agincourt Defense, Catalan Defense Accepted | |
| Jun 24, 2024 | Diaz Sepulveda | 0–1 | Reyes Zavaleta | Round 1: Diaz Sepulveda, Jorge - Reyes Zavaleta, Fabian Ricardo | English Opening: Anglo-Indian Defense, King's Knight Variation | |
