| Jul 12, 2026 | Serrano Fonseca | * | Serrano Fonseca | Campeonato Nacional de Categorías Menores Impares 2026 | ? | |
| Jul 12, 2026 | Serrano Fonseca | * | Santhosh | Campeonato Nacional de Categorías Menores Impares 2026 | ? | |
| Jul 12, 2026 | Serrano Fonseca | * | Santhosh | Campeonato Nacional de Categorías Menores Impares 2026 | French Defense: Exchange Variation | |
| Jul 12, 2026 | Duran Araya | 1–0 | Serrano Fonseca | Campeonato Nacional de Categorías Menores Impares 2026 | French Defense: Exchange Variation | |
| Jul 12, 2026 | Redondo Mora | 0–1 | Serrano Fonseca | Campeonato Nacional de Categorías Menores Impares 2026 | Sicilian Defense: Closed, Traditional | |
| Jul 12, 2026 | Serrano Fonseca | 1–0 | Santhosh | Campeonato Nacional de Categorías Menores Impares 2026 | Caro-Kann Defense: Advance Variation, Tal Variation | |
| Jul 11, 2026 | Serrano Fonseca | 1–0 | Iqbal | Campeonato Nacional de Categorías Menores Impares 2026 | Philidor Defense: Exchange Variation | |
| Jul 11, 2026 | Acuna Mora | 1–0 | Serrano Fonseca | Campeonato Nacional de Categorías Menores Impares 2026 | Queen's Pawn Game: Colle System, Grünfeld Formation | |
| Jul 11, 2026 | Serrano Fonseca | 1–0 | Chavarria Arley | Campeonato Nacional de Categorías Menores Impares 2026 | Scotch Game: Scotch Gambit | |
| Jul 11, 2026 | Gonzalez Solis | 0–1 | Serrano Fonseca | Campeonato Nacional de Categorías Menores Impares 2026 | Sicilian Defense: Old Sicilian | |
| May 17, 2026 | Serrano Fonseca | 0–1 | Corrales Corrales | Round 9: Serrano Fonseca, Rachel Nicole - Corrales Corrales, Ana Maria | Italian Game: Scotch Gambit, Double Gambit Accepted | |
| May 14, 2026 | Jauregui Casas | 1–0 | Serrano Fonseca | Round 4: Jauregui Casas, Lhuanna Khalezzy - Serrano Fonseca, Rachel Nicole | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| May 13, 2026 | Serrano Fonseca | 1–0 | Rojas Raraz | Round 3: Serrano Fonseca, Rachel Nicole - Rojas Raraz, Jarely Katty | Sicilian Defense: Smith-Morra Gambit | |
| May 12, 2026 | Serrano Fonseca | 1–0 | Gallego Rodriguez | Round 2: Serrano Fonseca, Rachel Nicole - Gallego Rodriguez, Salome | Scotch Game: Haxo Gambit | |
| May 12, 2026 | Paguaga Cruz | * | Serrano Fonseca | Round 1: Paguaga Cruz, Luciana Yassika - Serrano Fonseca, Rachel Nicole | French Defense: Rubinstein Variation, Fort Knox Variation | |
| Jan 21, 2026 | Segura Villavicencio | 1–0 | Serrano Fonseca | Round 3: Segura Villavicencio, Angela - Serrano Fonseca, Rachel Nicole | French Defense: Exchange Variation | |
| Jan 20, 2026 | Meza Quesada | 0–1 | Serrano Fonseca | Round 6: Meza Quesada, Alana - Serrano Fonseca, Rachel Nicole | French Defense: Knight Variation | |
| Jan 20, 2026 | Serrano Fonseca | 0–1 | Toro Jimenez | Round 2: Serrano Fonseca, Rachel Nicole - Toro Jimenez, Samantha Camila | Scandinavian Defense: Main Line | |
| Jan 9, 2026 | Alanna Valeria Rojas Padilla | * | Serrano Fonseca | Round 5: Alanna Valeria Rojas Padilla - Serrano Fonseca, Rachel Nicole | Caro-Kann Defense: Exchange Variation | |
| Jan 9, 2026 | Serrano Fonseca | 0–1 | Murillo Mathiew | Round 1: Serrano Fonseca, Rachel Nicole - Murillo Mathiew, Aimar Maria | Indian Defense: Accelerated London System | |
| Dec 30, 2025 | Ovalles Guerrero | 1–0 | Serrano Fonseca | XLVI Metropolitano Torneo Internacional 2025 U14 | French Defense: Advance Variation, Milner-Barry Gambit, Hector Variation | |