| Dec 30, 2025 | Rodriguez Gonzalez | 1–0 | Marin Guevara | XLVI Metropolitano Torneo Internacional 2025 U14 | Caro-Kann Defense | |
| Oct 6, 2025 | Mendez Machado | 1–0 | Marin Guevara | Ronda 4: Mendez Machado, Fatima - Marin Guevara, Mariana | Caro-Kann Defense: Panov Attack | |
| Oct 6, 2025 | Marin Guevara | 1–0 | Matus Acevedo | Ronda 3: Marin Guevara, Mariana - Matus Acevedo, Ariadna Lucia | English Opening: King's English Variation, Reversed Closed Sicilian | |
| Oct 5, 2025 | Garcia Juarez | ½–½ | Marin Guevara | Ronda 1: Garcia Juarez, Camila Ximena - Marin Guevara, Mariana | Indian Defense | |
| Oct 5, 2025 | Velasquez | 1–0 | Marin Guevara | Ronda 2: Velasquez, Shareth - Marin Guevara, Mariana | Caro-Kann Defense: Exchange Variation | |
| Oct 5, 2025 | Marin Guevara | 1–0 | Palencia | Ronda 5: Marin Guevara, Mariana - Palencia, Sophia | English Opening: King's English Variation, Reversed Closed Sicilian | |
| Oct 4, 2025 | Marin Guevara | 1–0 | Ventura Juarez | Ronda 5: Marin Guevara, Mariana - Ventura Juarez, Kimberly Melissa | English Opening: King's English Variation, Reversed Sicilian | |
| Oct 4, 2025 | Velasquez | 1–0 | Marin Guevara | Ronda 4: Velasquez, Sharon - Marin Guevara, Mariana | Caro-Kann Defense: Exchange Variation | |
| Oct 4, 2025 | Matus Acevedo | 0–1 | Marin Guevara | Ronda 3: Matus Acevedo, Andrea Lucia - Marin Guevara, Mariana | Caro-Kann Defense: Advance Variation | |
| Oct 4, 2025 | Marin Guevara | 0–1 | Reinhard Moller | Ronda 2: Marin Guevara, Mariana - Reinhard Moller, Kerstin Danielle | English Opening: Agincourt Defense | |
| Oct 4, 2025 | Serrano | ½–½ | Marin Guevara | Ronda 1: Serrano, Hillary Nicole - Marin Guevara, Mariana | Caro-Kann Defense: Advance Variation | |
| Oct 3, 2025 | Marin Guevara | 0–1 | Arevalo Guerra | Ronda 5: Marin Guevara, Mariana - Arevalo Guerra, Danna Isabella | English Opening: King's English Variation, Reversed Sicilian | |
| Oct 3, 2025 | Alonzo Espinal | 0–1 | Marin Guevara | Ronda 4: Alonzo Espinal, Ely Marielle - Marin Guevara, Mariana | Caro-Kann Defense | |
| Oct 3, 2025 | Garzona Barrera | 1–0 | Marin Guevara | Ronda 3: Garzona Barrera, Emelyn Nicole - Marin Guevara, Mariana | English Opening: King's English Variation, Reversed Closed Sicilian | |
| Oct 3, 2025 | Marin Guevara | 0–1 | Melara | Ronda 2: Marin Guevara, Mariana - Melara, Karla Sofia | English Opening: Symmetrical Variation, Two Knights Variation | |
| Oct 3, 2025 | Rivas Molina | 1–0 | Marin Guevara | Round 1: Rivas Molina, Ruth Eloisa - Marin Guevara, Mariana | Caro-Kann Defense: Endgame Offer | |
| Dec 27, 2024 | Marin Guevara | 0–1 | Garcia Fajardo | Ronda 2: Marin Guevara, Mariana - Garcia Fajardo, Samuel | Slav Defense | |
| Dec 27, 2024 | Guell Nunez | 0–1 | Marin Guevara | Ronda 1: Guell Nunez, Fabiana - Marin Guevara, Mariana | Sicilian Defense: Modern Variations | |
