| May 14, 2026 | Zheng | 1–0 | Ortiz Contreras | XV Campeonato Panamericano U9 Open | French Defense: Knight Variation | |
| May 1, 2026 | Osorio Velandia | 0–1 | Ortiz Contreras | Round 3: Osorio Velandia, Samuel David - Ortiz Contreras, Samuel | Italian Game: Scotch Gambit, Max Lange Attack | |
| May 1, 2026 | Ortiz Contreras | 1–0 | Medrano Cardenas | Round 2: Ortiz Contreras, Samuel - Medrano Cardenas, Miguel Angel | Italian Game: Evans Gambit, McDonnell Defense | |
| Apr 30, 2026 | Ian Parra Lavacude | 0–1 | Ortiz Contreras | Round 1: Ian Parra Lavacude - Ortiz Contreras, Samuel | Four Knights Game: Spanish Variation, Ranken Variation | |
| Apr 30, 2026 | Ortiz Contreras | 1–0 | Brinez Moreno | Round 4: Ortiz Contreras, Samuel - Brinez Moreno, Christopher | French Defense: Horwitz Attack, Papa-Ticulat Gambit | |
| Apr 30, 2026 | Ortiz Contreras | 1–0 | Navarro Espana | Round 6: Ortiz Contreras, Samuel - Navarro Espana, Jacobo | Sicilian Defense: Delayed Alapin Variation, with e6 | |
| Apr 30, 2026 | Ortiz Contreras | 1–0 | Nicolas Vasco Muneton | Round 7: Ortiz Contreras, Samuel - Nicolas Vasco Muneton | Philidor Defense | |
| Apr 30, 2026 | Ferrada Parada | 0–1 | Ortiz Contreras | Round 5: Ferrada Parada, Mateo Eduardo - Ortiz Contreras, Samuel | Italian Game: Rousseau Gambit | |
| Mar 23, 2026 | Comas Bermeo | * | Ortiz Contreras | Round 7: Comas Bermeo, Emilie - Ortiz Contreras, Samuel | Italian Game: Classical Variation, Giuoco Pianissimo, with a6 | |
| Mar 23, 2026 | Ortiz Contreras | ½–½ | Echeverria Sabogal | Round 6: Ortiz Contreras, Samuel - Echeverria Sabogal, Jeronimo | Sicilian Defense: Closed | |
| Mar 22, 2026 | Martinez Russi | 0–1 | Ortiz Contreras | Round 5: Martinez Russi, Tygua Lautaro - Ortiz Contreras, Samuel | Queen's Pawn Game: London System | |
| Mar 22, 2026 | Ortiz Contreras | 1–0 | Miguel Angel Medrano Cardenas | Round 4: Ortiz Contreras, Samuel - Miguel Angel Medrano Cardenas | Ruy Lopez: Steinitz Defense | |
| Mar 22, 2026 | Ortiz Ortiz | 1–0 | Ortiz Contreras | Round 3: Ortiz Ortiz, Diego Alejandro - Ortiz Contreras, Samuel | Queen's Pawn Game: Colle System | |
| Mar 21, 2026 | Justin Alejandro Gamba Soler | 0–1 | Ortiz Contreras | Round 2: Justin Alejandro Gamba Soler - Ortiz Contreras, Samuel | Mieses Opening: Reversed Rat | |
| Mar 20, 2026 | Ortiz Contreras | 0–1 | Romero Ballesteros | Round 1: Ortiz Contreras, Samuel - Romero Ballesteros, Gabriel Matias | Queen's Gambit Declined: Marshall Defense | |
| Dec 11, 2025 | Ortiz Contreras | 0–1 | Cantor Pardo | XXI Festival Sudamericano de la Juventud 2025 | Caro-Kann Defense: Two Knights Attack | |
| Dec 8, 2025 | Palacio Salazar | 1–0 | Ortiz Contreras | XXI Festival Sudamericano de la Juventud 2025 | Italian Game: Two Knights Defense, Perreux Variation | |
| Nov 17, 2025 | Juan David Gonzalez Osorio | 1–0 | Ortiz Contreras | Round 6: Juan David Gonzalez Osorio - Ortiz Contreras, Samuel | Italian Game: Scotch Gambit, Max Lange Attack | |
| Nov 15, 2025 | Kevin Santiago Rodriguez Diaz | 1–0 | Ortiz Contreras | Round 3: Kevin Santiago Rodriguez Diaz - Ortiz Contreras, Samuel | Italian Game: Classical Variation, Giuoco Pianissimo, with a6 | |
| Jul 5, 2025 | Ortiz Contreras | 1–0 | Farias Beseler | Sudamericano Escolar Categorias Impares | ? | |
| Jul 4, 2025 | Ortiz Contreras | 1–0 | Gonzales Olazo | Sudamericano Escolar Categorias Impares | Sicilian Defense: Grand Prix Attack | |
| Jul 4, 2025 | Ortiz Contreras | * | Gonzales Olazo | Sudamericano Escolar Categorias Impares | ? | |
| Jul 2, 2025 | Ramos Barriga | 1–0 | Ortiz Contreras | Sudamericano Escolar Categorias Impares | Italian Game: Two Knights Defense, Polerio Defense, Bishop Check Line | |
| Jul 2, 2025 | Ortiz Contreras | 0–1 | Navarro Espana | Sudamericano Escolar Categorias Impares | French Defense: Rubinstein Variation | |
| Jul 2, 2025 | Pucachaqui Arotingo | 0–1 | Ortiz Contreras | Sudamericano Escolar Categorias Impares | Italian Game: Scotch Gambit, Max Lange Attack | |
| Jul 2, 2025 | Ortiz Contreras | 1–0 | Farias Beseler | Sudamericano Escolar Categorias Impares | Ruy Lopez: Morphy Defense, Caro Variation | |
| Jun 1, 2025 | Estrada Herrera | 1–0 | Ortiz Contreras | Round 6: Estrada Herrera, Jeronimo - Ortiz Contreras, Samuel | Queen's Gambit Declined: Traditional Variation | |
| May 30, 2025 | Ortiz Contreras | ½–½ | Contreras Salcedo | Round 2: Ortiz Contreras, Samuel - Contreras Salcedo, Samuel Esteban | Four Knights Game | |
| Sep 22, 2024 | Franco Jimenez Franz | 0–1 | Ortiz Contreras | Round 6: Franco Jimenez Franz - Ortiz Contreras, Samuel | Nimzowitsch Defense: Kennedy Variation, Linksspringer Variation | |
| Sep 22, 2024 | Isaac Moreno Rodriguez | 1–0 | Ortiz Contreras | Round 7: Isaac Moreno Rodriguez - Ortiz Contreras, Samuel | Italian Game: Giuoco Piano | |
| Sep 21, 2024 | Ortiz Contreras | 0–1 | Ramirez Mejia | Round 5: Ortiz Contreras, Samuel - Ramirez Mejia, Jose Gregorio | French Defense: Franco-Sicilian Defense | |
| Sep 21, 2024 | Ian Samuel Garnica Castaneda | 0–1 | Ortiz Contreras | Round 4: Ian Samuel Garnica Castaneda - Ortiz Contreras, Samuel | Three Knights Opening | |
| Sep 20, 2024 | Ortiz Contreras | 1–0 | Lozano Cardozo | Round 3: Ortiz Contreras, Samuel - Lozano Cardozo, Dominic Andres | Zukertort Opening: Tennison Gambit | |
| Sep 20, 2024 | Lee Morales | 1–0 | Ortiz Contreras | Round 2: Lee Morales, Juan Martin - Ortiz Contreras, Samuel | Italian Game: Giuoco Piano | |
| Sep 19, 2024 | Ortiz Contreras | 0–1 | Guevara Garcia | Round 2: Ortiz Contreras, Samuel - Guevara Garcia, Samuel Alejandro | Italian Game: Hungarian Defense | |
| Sep 19, 2024 | Ortiz Contreras | 0–1 | Guevara Garcia | Round 1: Ortiz Contreras, Samuel - Guevara Garcia, Samuel Alejandro | Italian Game: Hungarian Defense | |