| Guevara Ruiz, Marvin Andres1972 | ½-½ | Ordonez Bonilla, Ricardo Andres2134 | 3rd Caissa Guatemala Open | 2026 |
| Guevara Ruiz, Marvin Andres1972 | 0-1 | Kaufman, R2259 | 3rd Caissa Guatemala Open | 2026 |
| Guevara Ruiz, Marvin Andres1972 | ½-½ | Sanchez Alvarez, R2364 | 3rd Caissa Guatemala Open | 2026 |
| Guevara Ruiz, Marvin Andres1972 | 0-1 | Gonzalez Vidal, Y2525 | 3rd Caissa Guatemala Open | 2026 |
| Gonzalez Bolivar, Juan Jose1914 | 1-0 | Guevara Ruiz, Marvin Andres2066 | World Youth U16 Olympiad | 2025 |
| Guevara Ruiz, Marvin Andres2066 | ½-½ | Casqui Lopez, Pamela Grace1938 | World Youth U16 Olympiad | 2025 |
| Guevara Ruiz, Marvin Andres2066 | 0-1 | Garzon Espitia, Nicolas Alejandro1817 | World Youth U16 Olympiad | 2025 |
| Ramirez Aguilar, Julian Jose1942 | 0-1 | Guevara Ruiz, Marvin Andres2066 | World Youth U16 Olympiad | 2025 |
| Guevara Ruiz, Marvin Andres2066 | 0-1 | Herrera Jimenez, Mateo1968 | World Youth U16 Olympiad | 2025 |
| Tabatadze, Erekle2194 | 1-0 | Guevara Ruiz, Marvin Andres2066 | World Youth U16 Olympiad | 2025 |
| Guevara Ruiz, Marvin Andres2066 | 1-0 | Bedi, Vaibhav1807 | World Youth U16 Olympiad | 2025 |
| Vaz, Ethan2446 | 1-0 | Guevara Ruiz, Marvin Andres2066 | World Youth U16 Olympiad | 2025 |
| Huertas Cabrera, Daniel1545 | 0-1 | Guevara Ruiz, Marvin Andres2066 | World Youth U16 Olympiad | 2025 |
| Marjanovic, Dej2365 | 1-0 | Guevara Ruiz, Marvin Andres2003 | 45th Olympiad 2024 | 2024 |
| Jaramillo Lopez, Ali Aaron2258 | 1-0 | Guevara Ruiz, Marvin Andres2003 | 45th Olympiad 2024 | 2024 |