| Apr 2, 2026 | Lizano Quiros | 1–0 | Ulloa Jimenez | Campeonato Centroamericano y del Caribe SUB 20 2026 | Caro-Kann Defense: Advance Variation, Tal Variation | |
| Apr 1, 2026 | Ulloa Jimenez | ½–½ | Guevara Ruiz | Campeonato Centroamericano y del Caribe SUB 20 2026 | Sicilian Defense: Closed | |
| Apr 1, 2026 | Mora Chavarria | 0–1 | Ulloa Jimenez | Campeonato Centroamericano y del Caribe SUB 20 2026 | Center Game: Berger Variation | |
| Mar 31, 2026 | Ulloa Jimenez | 0–1 | Jain | Campeonato Centroamericano y del Caribe SUB 20 2026 | Sicilian Defense: Moscow Variation, Main Line | |
| Mar 30, 2026 | Ulloa Jimenez | 0–1 | Mendez Machado | Campeonato Centroamericano y del Caribe SUB 20 2026 | Four Knights Game: Scotch Variation Accepted, Main Line | |
| Mar 30, 2026 | Montes Lopez | 0–1 | Ulloa Jimenez | Campeonato Centroamericano y del Caribe SUB 20 2026 | Queen's Pawn Game: Modern Defense | |
| Mar 29, 2026 | Ramirez Acuna | 0–1 | Ulloa Jimenez | Campeonato Centroamericano y del Caribe SUB 20 2026 | Queen's Pawn Game: Accelerated London System | |
| Mar 28, 2026 | Ulloa Jimenez | 1–0 | Guevara Saenz | Campeonato Centroamericano y del Caribe SUB 20 2026 | Four Knights Game: Spanish Variation | |
| Mar 28, 2026 | Herrera Benitez | 1–0 | Ulloa Jimenez | Campeonato Centroamericano y del Caribe SUB 20 2026 | Caro-Kann Defense: Advance Variation | |
| Jan 23, 2026 | Rojas Vindas | ½–½ | Ulloa Jimenez | Round 6: Rojas Vindas, Emmanuel de Jesus - Ulloa Jimenez, Santiago | Caro-Kann Defense: Accelerated Panov Attack, Modern Variation | |
| Jan 22, 2026 | Ulloa Jimenez | 0–1 | Marenco Garcia | Round 5: Ulloa Jimenez, Santiago - Marenco Garcia, Christopher E. | French Defense: Steinitz Variation, Boleslavsky Variation | |
| Jan 22, 2026 | Ulloa Jimenez | 1–0 | Redondo Washington | Round 4: Ulloa Jimenez, Santiago - Redondo Washington, Josymar | Caro-Kann Defense: Advance Variation | |
| Jan 20, 2026 | Redondo Washington | ½–½ | Ulloa Jimenez | Round 1: Redondo Washington, Josymar - Ulloa Jimenez, Santiago | Caro-Kann Defense | |
| Jan 19, 2026 | Castillo Chavarria | * | Ulloa Jimenez | Round 2: Castillo Chavarria, Sebastian - Ulloa Jimenez, Santiago | Nimzo-Larsen Attack: Modern Variation | |
| Jan 19, 2026 | Ulloa Jimenez | 1–0 | Brizuela Hidalgo | Round 2: Ulloa Jimenez, Santiago - Brizuela Hidalgo, Sebastian | English Opening: Anglo-Scandinavian Defense | |
| Jan 16, 2026 | Marenco Garcia | ½–½ | Ulloa Jimenez | Ronda 6: Marenco Garcia, Christopher E. - Ulloa Jimenez, Santiago | Caro-Kann Defense | |
| Jan 16, 2026 | Ulloa Jimenez | 1–0 | Marenco Garcia | Ronda 3: Ulloa Jimenez, Santiago - Marenco Garcia, Christopher E. | French Defense: Advance Variation, Paulsen Attack | |
| Jan 8, 2026 | Ulloa Jimenez | * | Castillo Chavarria | Round 5: Ulloa Jimenez, Santiago - Castillo Chavarria, Sebastian | East Indian Defense | |
| Dec 31, 2024 | Villarreal Chavarria | 0–1 | Ulloa Jimenez | Ronda 7: Villarreal Chavarria, Samantha - Ulloa Jimenez, Santiago | Nimzowitsch Defense: Williams Variation | |
| Dec 31, 2024 | Vargas Vargas | 1–0 | Ulloa Jimenez | Ronda 5: Vargas Vargas, Yeison David - Ulloa Jimenez, Santiago | Nimzowitsch Defense: Williams Variation | |
| Dec 30, 2024 | Leon Cubero | 0–1 | Ulloa Jimenez | Ronda 1: Leon Cubero, Anthony - Ulloa Jimenez, Santiago | Italian Game | |
