| Mar 23, 2026 | Rodriguez Rodriguez | * | Duarte Guiza | Round 7: Rodriguez Rodriguez, Thiago - Duarte Guiza, Fredy Samuel | Scotch Game: Lolli Variation | |
| Mar 23, 2026 | Duarte Guiza | ½–½ | Casas Mejia | Round 6: Duarte Guiza, Fredy Samuel - Casas Mejia, Santiago | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Mar 22, 2026 | Alvarez Guzman | 1–0 | Duarte Guiza | Round 5: Alvarez Guzman, Joseph Emmanuel - Duarte Guiza, Fredy Samuel | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Mar 22, 2026 | Duarte Guiza | ½–½ | Hernandez Lopez | Round 4: Duarte Guiza, Fredy Samuel - Hernandez Lopez, Isaac | Italian Game: Giuoco Pianissimo, Italian Four Knights Variation | |
| Mar 22, 2026 | Lee Morales | 0–1 | Duarte Guiza | Round 3: Lee Morales, Juan Martin - Duarte Guiza, Fredy Samuel | Italian Game: Classical Variation, Giuoco Pianissimo | |
| Mar 21, 2026 | Duarte Guiza | 0–1 | Rosales Rojas | Round 2: Duarte Guiza, Fredy Samuel - Rosales Rojas, Juan Sebastian | Sicilian Defense: O'Kelly Variation, Normal System | |
| Mar 20, 2026 | Eithan David Arismendi Barragan | 0–1 | Duarte Guiza | Round 1: Eithan David Arismendi Barragan - Duarte Guiza, Fredy Samuel | Italian Game: Giuoco Piano | |
| Nov 23, 2025 | Alvarez Guzman | 1–0 | Duarte Guiza | Round 4: Alvarez Guzman, Joseph Emmanuel - Duarte Guiza, Fredy Samuel | Italian Game: Giuoco Pianissimo, Normal | |
| Nov 23, 2025 | Duarte Guiza | 0–1 | Lizarazo Camelo | Round 3: Duarte Guiza, Fredy Samuel - Lizarazo Camelo, Sara Alejandra | Sicilian Defense: Old Sicilian | |
| Nov 23, 2025 | Duarte Guiza | 1–0 | Agudelo Guevara | Round 2: Duarte Guiza, Fredy Samuel - Agudelo Guevara, Mariana | French Defense: Hecht-Reefschläger Variation | |
| Nov 23, 2025 | Bautista Sanabria | 1–0 | Duarte Guiza | Round 1: Bautista Sanabria, Johan Andres - Duarte Guiza, Fredy Samuel | Italian Game: Classical Variation, Giuoco Pianissimo | |
| Feb 23, 2025 | Duarte Guiza | 0–1 | Ordonez Diaz | Round 1: Duarte Guiza, Fredy Samuel - Ordonez Diaz, Luis Fernando | Sicilian Defense: Taimanov Variation | |
| Feb 23, 2025 | Duarte Guiza | 0–1 | Melo Corredor | Round 4: Duarte Guiza, Fredy Samuel - Melo Corredor, Jairo Alberto | Italian Game: Anti-Fried Liver Defense | |
| Feb 23, 2025 | Intencipa Acosta | 1–0 | Duarte Guiza | Round 2: Intencipa Acosta, Edison Julian - Duarte Guiza, Fredy Samuel | Scotch Game | |
| Sep 22, 2024 | Duarte Guiza | 0–1 | Alvarez Guzman | Round 6: Duarte Guiza, Fredy Samuel - Alvarez Guzman, Joseph Emmanuel | Italian Game: Giuoco Pianissimo, Canal Variation | |
| Sep 20, 2024 | Duarte Guiza | 0–1 | Ortega Navia | Round 2: Duarte Guiza, Fredy Samuel - Ortega Navia, Mauro | Italian Game: Anti-Fried Liver Defense | |
| Sep 19, 2024 | Higuera Camargo | 1–0 | Duarte Guiza | Round 2: Higuera Camargo, Esteban - Duarte Guiza, Fredy Samuel | Italian Game: Giuoco Pianissimo, Canal Variation | |
| Sep 19, 2024 | Higuera Camargo | 1–0 | Duarte Guiza | Round 1: Higuera Camargo, Esteban - Duarte Guiza, Fredy Samuel | Italian Game: Giuoco Pianissimo, Canal Variation | |
| — | Duarte Guiza | 0–1 | James | FIDE World Youth U16 Chess Olympiad 2025 | Queen's Pawn Game: Accelerated London System, Steinitz Countergambit | |
| — | Duarte Guiza | 0–1 | Reifer-Belle | FIDE World Youth U16 Chess Olympiad 2025 | Italian Game: Giuoco Pianissimo, Italian Four Knights Variation | |
| — | Duarte Guiza | 0–1 | Bulelani | Round 1: Duarte Guiza, Fredy Samuel - Bulelani, Stephen | French Defense: Classical Variation, Delayed Exchange Variation | |
| — | Duarte Guiza | 0–1 | Cilpa | FIDE World Youth U16 Chess Olympiad 2025 | Sicilian Defense: Kan Variation, Knight Variation | |
| — | Duarte Guiza | ½–½ | Pride | FIDE World Youth U16 Chess Olympiad 2025 | French Defense: King's Indian Attack | |
| — | Majid | 1–0 | Duarte Guiza | FIDE World Youth U16 Chess Olympiad 2025 | Indian Defense | |
| — | Manchani | 0–1 | Duarte Guiza | FIDE World Youth U16 Chess Olympiad 2025 | Italian Game: Giuoco Piano | |
| — | Huertas Cabrera | 1–0 | Duarte Guiza | FIDE World Youth U16 Chess Olympiad 2025 | Nimzo-Larsen Attack: Modern Variation | |
| — | Cleofa | 1–0 | Duarte Guiza | FIDE World Youth U16 Chess Olympiad 2025 | Old Indian Defense | |