| 30 ago 2026 | Ibarra Carlos Roberto 2270 | Guevara Ruiz, Santiago Jose 2121 | ½-½ | B00 Defensa Pirc | XII Torneo Internacional Feria Agostina 2026 | 33 | Ver |
| 30 ago 2026 | Guevara Ruiz, Santiago Jose 2121 | Melendez Manuel A. 2113 | 1-0 | B31 Defensa Siciliana: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | XII Torneo Internacional Feria Agostina 2026 | 48 | Ver |
| 29 ago 2026 | Gavarrete, Joel 2010 | Guevara Ruiz, Santiago Jose 2121 | ½-½ | A06 Ataque Nimzo-Larsen: Classical Variation | XII Torneo Internacional Feria Agostina 2026 | 65 | Ver |
| 29 ago 2026 | Guevara Ruiz, Santiago Jose 2121 | Guevara Ruiz, Marvin Andres 2149 | ½-½ | B10 Defensa Caro-Kann: Two Knights Attack | XII Torneo Internacional Feria Agostina 2026 | 27 | Ver |
| 9 ago 2026 | Guevara Ruiz, Santiago Jose 2121 | Huallpa Fernandez, Hector Manuel 2025 | 0-1 | B45 Defensa Siciliana: Four Knights Variation | Pan American U-20 Championship 2026 | Open | 68 | Ver |
| 8 ago 2026 | Guevara Ruiz, Santiago Jose 2121 | Garzon Camelo, Andres Santiago 2344 | ½-½ | C55 Apertura Italiana: Two Knights Defense, Modern Bishop's Opening | Pan American U-20 Championship 2026 | Open | 35 | Ver |
| 8 ago 2026 | Francisco Guecamburu, Candela Be 2225 | Guevara Ruiz, Santiago Jose 2121 | 1-0 | D01 Rapport-Jobava System | Pan American U-20 Championship 2026 | Open | 43 | Ver |
| 7 ago 2026 | Zacarias Rodriguez, Santiago 2208 | Guevara Ruiz, Santiago Jose 2121 | 0-1 | B32 Defensa Siciliana: O'Kelly Variation, Maróczy Bind, Geller Line | Pan American U-20 Championship 2026 | Open | 35 | Ver |
| 6 ago 2026 | Guevara Ruiz, Santiago Jose 2121 | Lima, Stefan Moisei VIeira 2205 | ½-½ | C11 Defensa Francesa: Classical Variation, Burn Variation, Morozevich Line | Pan American U-20 Championship 2026 | Open | 36 | Ver |
| 6 ago 2026 | Patel, Maahir M 2192 | Guevara Ruiz, Santiago Jose 2121 | 0-1 | A05 Ataque Indio de Rey | Pan American U-20 Championship 2026 | Open | 46 | Ver |
| 3 ago 2026 | Guevara Ruiz, Santiago Jose 2121 | Reyes Zavaleta, Fabian Ricardo 2260 | ½-½ | B92 Defensa Siciliana: Najdorf Variation, Opocensky Variation | Pan American U-20 Championship 2026 | Open | 54 | Ver |
| 27 jun 2026 | Melendez Manuel A. 2113 | Guevara Ruiz, Santiago Jose 2121 | 1-0 | D45 Defensa Semieslava: Normal Variation | Segundo Campeonato Nacional Open 2026 | El Salvador | 31 | Ver |
| 22 jun 2026 | Guevara Ruiz, Santiago Jose 2121 | Giron, Jorge Ernesto 2278 | 0-1 | E04 Apertura Catalana: Open Defense | Segundo Campeonato Nacional Open 2026 | El Salvador | 43 | Ver |
| 13 jun 2026 | Guevara Sanchez, Erick Marvin 2067 | Guevara Ruiz, Santiago Jose 2121 | ½-½ | C01 Defensa Francesa: Exchange Variation, Svenonius Variation | Segundo Campeonato Nacional Open 2026 | El Salvador | 12 | Ver |
| 13 jun 2026 | Guevara Ruiz, Santiago Jose 2121 | Medrano, Camilo 2024 | 1-0 | D02 Apertura de Peón de Dama: Symmetrical Variation | Segundo Campeonato Nacional Open 2026 | El Salvador | 69 | Ver |
| 16 may 2026 | Li, Aiden Linyuan 2021 | Guevara Ruiz, Santiago Jose 2207 | ½-½ | B10 Defensa Caro-Kann: Two Knights Attack | XV Campeonato Panamericano U7 - U17 de Ajedrez 2026 | O13 | 26 | Ver |
| 2 abr 2026 | Guevara Ruiz, Santiago Jose 2231 | Mendez Machado, Andre 2202 | ½-½ | E11 Defensa Bogoindia: Retreat Variation | Campeonato Centroamericano y del Caribe SUB 20 2026 | 24 | Ver |
| 1 abr 2026 | Guevara Ruiz, Santiago Jose 2231 | Quesada Fallas, Esteban 2016 | 0-1 | B06 Defensa Moderna: Standard Defense | Campeonato Centroamericano y del Caribe SUB 20 2026 | 19 | Ver |
| 30 mar 2026 | Barboza Viquez, Martin Eduardo 2017 | Guevara Ruiz, Santiago Jose 2171 | 1-0 | B12 Defensa Caro-Kann: Advance Variation | Campeonato Centroamericano y del Caribe SUB 20 2026 | 27 | Ver |
| 29 mar 2026 | Guevara Ruiz, Santiago Jose 2171 | Gonzalez Xique, Cesar Raul 2049 | ½-½ | B12 Defensa Caro-Kann: Advance Variation | Campeonato Centroamericano y del Caribe SUB 20 2026 | 43 | Ver |