| 27 jun 2026 | Oro, Faustino 2513 | Ramirez Sifuentes, Luis Angel 2065 | 1-0 | B50 Defensa Siciliana: Delayed Alapin Variation, with d6 | WR Chess Marathon Perú 2026 | Rapid #2 | 40 | Ver |
| 11 dic 2025 | Ortiz Monsalve, Sebastian 2033 | Ramirez Sifuentes, Luis Angel 2187 | 0-1 | B28 Defensa Siciliana: O'Kelly Variation, Normal System | XXI Festival Sudamericano de la Juventud 2025 | Clásico Sub-18 Abs | 27 | Ver |
| 10 dic 2025 | Ramirez Sifuentes, Luis Angel 2187 | Silva, Caio Henrique Angelico 2268 | ½-½ | A05 Apertura Zukertort | XXI Festival Sudamericano de la Juventud 2025 | Clásico Sub-18 Abs | 49 | Ver |
| 10 dic 2025 | Bazan Romero, Octavio Aaron 2299 | Ramirez Sifuentes, Luis Angel 2187 | ½-½ | B22 Defensa Siciliana: Alapin Variation, Barmen Defense | XXI Festival Sudamericano de la Juventud 2025 | Clásico Sub-18 Abs | 61 | Ver |
| 9 dic 2025 | Ramirez Sifuentes, Luis Angel 2187 | Perez Tangarife, Simon 2055 | 1-0 | E11 Defensa Bogoindia: Grünfeld Variation | XXI Festival Sudamericano de la Juventud 2025 | Clásico Sub-18 Abs | 39 | Ver |
| 9 dic 2025 | Ramirez Sifuentes, Luis Angel 2013 | Cahuapaza Tarapaca, Leonardo 2024 | 1-0 | A84 Defensa Holandesa: Classical Variation | XXI Festival Sudamericano de la Juventud 2025 | Rápido Sub-18 Abs | 67 | Ver |
| 8 dic 2025 | Ramirez Sifuentes, Luis Angel 2187 | Cabiativa, Juan Esteban 2121 | 1-0 | E04 Apertura Catalana: Open Defense | XXI Festival Sudamericano de la Juventud 2025 | Clásico Sub-18 Abs | 32 | Ver |
| 7 dic 2025 | Ramirez Sifuentes, Luis Angel 2013 | Casares Ugueto, Santiago de Jesus 2118 | ½-½ | D43 Defensa Semieslava | XXI Festival Sudamericano de la Juventud 2025 | Rápido Sub-18 Abs | 13 | Ver |
| 7 dic 2025 | Robles Cerron, Sebastian 2041 | Ramirez Sifuentes, Luis Angel 2013 | ½-½ | E92 Defensa India de Rey: Petrosian Variation, Stein Defense | XXI Festival Sudamericano de la Juventud 2025 | Rápido Sub-18 Abs | 24 | Ver |
| 7 dic 2025 | Ramirez Sifuentes, Luis Angel 2013 | Cabiativa, Juan Esteban 2140 | 0-1 | E05 Apertura Catalana: Open Defense, Classical Line | XXI Festival Sudamericano de la Juventud 2025 | Rápido Sub-18 Abs | 42 | Ver |
| 7 dic 2025 | Perez Valero, Andres Gabriel 2058 | Ramirez Sifuentes, Luis Angel 2013 | 0-1 | B22 Defensa Siciliana: Alapin Variation, Smith-Morra Declined | XXI Festival Sudamericano de la Juventud 2025 | Rápido Sub-18 Abs | 36 | Ver |
| 7 dic 2025 | Ramirez Sifuentes, Luis Angel 2013 | Castillo Rodriguez, Edward Andres 2166 | 1-0 | E06 Apertura Catalana: Closed | XXI Festival Sudamericano de la Juventud 2025 | Rápido Sub-18 Abs | 70 | Ver |
| 6 dic 2025 | Lopez Rayo, Santiago 2363 | Ramirez Sifuentes, Luis Angel 2187 | 1-0 | B36 Defensa Siciliana: Accelerated Dragon, Maróczy Bind | XXI Festival Sudamericano de la Juventud 2025 | Clásico Sub-18 Abs | 56 | Ver |
| 28 sep 2025 | Reyes Zavaleta, Diego Alexander 2020 | Ramirez Sifuentes, Luis Angel 2024 | 0-1 | E94 Defensa India de Rey: Orthodox Variation | World Junior Rapid & Blitz Chess Championship 2025 | Blitz Open | 47 | Ver |
| 27 sep 2025 | Tsaruk, Maksim 2476 | Ramirez Sifuentes, Luis Angel 2025 | 1-0 | B91 Defensa Siciliana: Najdorf Variation, Zagreb Variation | World Junior Rapid & Blitz Chess Championship 2025 | Blitz Open | 31 | Ver |
| 27 sep 2025 | Parra Gonzales, Andre Leonardo 2139 | Ramirez Sifuentes, Luis Angel 2025 | 1-0 | B01 Defensa Escandinava: Lasker Variation | World Junior Rapid & Blitz Chess Championship 2025 | Blitz Open | 39 | Ver |
| 27 sep 2025 | Ramirez Sifuentes, Luis Angel 2025 | Hernandez Ojeda, Garry Anatholy 2209 | 0-1 | E94 Defensa India de Rey: Orthodox Variation | World Junior Rapid & Blitz Chess Championship 2025 | Blitz Open | 62 | Ver |
| 27 sep 2025 | Ramirez Sifuentes, Luis Angel 2025 | Suyarov, Mukhammadzokhid 2482 | 0-1 | C42 Defensa Petrov: Kaufmann Attack | World Junior Rapid & Blitz Chess Championship 2025 | Blitz Open | 38 | Ver |