| Mar 19, 2026 | Leiva Mendoza | 1–0 | Salcedo Ojeda | Ronda 9: Leiva Mendoza, Matias - Salcedo Ojeda, Paula Andrea | Sicilian Defense: Grand Prix Attack | |
| Mar 17, 2026 | Garcia Pacheco | 1–0 | Leiva Mendoza | Ronda 7: Garcia Pacheco, Mikel - Leiva Mendoza, Matias | King's Indian Attack: Sicilian Variation | |
| Mar 16, 2026 | Vilches Romero | 1–0 | Leiva Mendoza | Ronda 6: Vilches Romero, Eduardo - Leiva Mendoza, Matias | King's Pawn Game | |
| Mar 12, 2026 | Leiva Mendoza | ½–½ | Bustos Perez | Ronda 5: Leiva Mendoza, Matias - Bustos Perez, Luis | Sicilian Defense: Modern Variations | |
| Mar 9, 2026 | Cordero Alchahueni | 0–1 | Leiva Mendoza | Ronda 4: Cordero Alchahueni, Jorge Marcelo - Leiva Mendoza, Matias | French Defense: Advance Variation, Paulsen Attack | |
| Mar 5, 2026 | Leiva Mendoza | 1–0 | Barriga Aguirre | Ronda 3: Leiva Mendoza, Matias - Barriga Aguirre, Boris Alain | Sicilian Defense: Closed | |
| Mar 4, 2026 | Chacon Salinas | 1–0 | Leiva Mendoza | Ronda 2: Chacon Salinas, Cesar - Leiva Mendoza, Matias | Dutch Defense: Classical Variation, Buenos Aires Variation | |
| Jan 26, 2026 | Gonzalez Morales | 0-0 | Leiva Mendoza | I CHESS OPEN SANTIAGO 2026 - CLUB DE AJEDREZ DE CHILE | ? | |
| Jan 21, 2026 | Leiva Mendoza | 0–1 | Vergara Barreda | Round 2: Leiva Mendoza, Matias - Vergara Barreda, Inaki Imanol | Scandinavian Defense | |
| Feb 20, 2025 | Lodge Bravo | ½–½ | Leiva Mendoza | CENTENARIO CHESS MASTERS GRUPO C | French Defense: Paulsen Variation | |
| Feb 19, 2025 | Leiva Mendoza | ½–½ | Faundes Pedreros | CENTENARIO CHESS MASTERS GRUPO C | Bishop's Opening: Vienna Hybrid | |
| Feb 19, 2025 | Leiva Mendoza | 1–0 | Jimenez Jimenez | CENTENARIO CHESS MASTERS GRUPO C | Sicilian Defense: Grand Prix Attack | |
| Feb 18, 2025 | Martinez Pina | 1–0 | Leiva Mendoza | CENTENARIO CHESS MASTERS GRUPO C | Queen's Pawn Game | |
| Feb 18, 2025 | Palma Araya | 1–0 | Leiva Mendoza | CENTENARIO CHESS MASTERS GRUPO C | Dutch Defense: Classical Variation | |
| Feb 17, 2025 | Leiva Mendoza | 1–0 | Caurapan Montero | CENTENARIO CHESS MASTERS GRUPO C | Caro-Kann Defense: Accelerated Panov Attack, Modern Variation | |
| Feb 17, 2025 | Kittsteiner Araya | 0–1 | Leiva Mendoza | CENTENARIO CHESS MASTERS GRUPO C | English Opening: King's English Variation, Reversed Closed Sicilian | |
| Jan 24, 2025 | Arias Diaz | 1–0 | Leiva Mendoza | Nacional Sub 20 Absoluto 2025 | Dutch Defense: Classical Variation, Buenos Aires Variation | |
| Jan 22, 2025 | Leiva Mendoza | 0–1 | Vera Villa | Nacional Sub 20 Absoluto 2025 | Bishop's Opening: Vienna Hybrid | |
| Jan 21, 2025 | Leiva Mendoza | 0–1 | Orrego Palermo | Nacional Sub 20 Absoluto 2025 | Sicilian Defense: Closed | |
| Nov 4, 2024 | Leiva Mendoza | ½–½ | Nauto Munoz | CLUB DE AJEDREZ CHILE - TORNEO INTERCLUBES 100 AÑOS CLAUSURA 2024 | Modern Defense: Standard Line | |
| Oct 21, 2024 | Leiva Mendoza | 0–1 | Lara Mascarreno | CLUB DE AJEDREZ CHILE - TORNEO INTERCLUBES 100 AÑOS CLAUSURA 2024 | Sicilian Defense: Closed | |
| Oct 10, 2024 | Leiva Mendoza | 0–1 | Aravena Navarro | CLUB DE AJEDREZ CHILE - TORNEO INTERCLUBES 100 AÑOS CLAUSURA 2024 | Sicilian Defense: Closed | |
| Aug 5, 2024 | Caurapan Montero | 1–0 | Leiva Mendoza | CLUB AJEDREZ CHILE TORNEO IRT SUB 2400 AGOSTO 2024 | French Defense: Paulsen Variation | |
| Jun 28, 2024 | Candia Gomez | 1–0 | Leiva Mendoza | Round 7: Candia Gomez, Matias Vicente - Leiva Mendoza, Matias | French Defense: Paulsen Variation | |
| Jun 27, 2024 | Leiva Mendoza | ½–½ | Reyes Zavaleta | Round 6: Leiva Mendoza, Matias - Reyes Zavaleta, Diego Alexander | Sicilian Defense: Grand Prix Attack | |
| Jun 26, 2024 | Palma Araya | 1–0 | Leiva Mendoza | Round 5: Palma Araya, David - Leiva Mendoza, Matias | Dutch Defense: Classical Variation, Buenos Aires Variation | |
| Jun 26, 2024 | Leiva Mendoza | 1–0 | Vera Villa | Round 4: Leiva Mendoza, Matias - Vera Villa, Ignacio Antonio | Vienna Game: Max Lange Defense | |
| Jun 24, 2024 | Soriano Quispe | 1–0 | Leiva Mendoza | Round 1: Soriano Quispe, Ivan Excender - Leiva Mendoza, Matias | Zukertort Opening: Queen's Gambit Invitation | |
