| May 18, 2026 | Gaitan Santos | 0–1 | Mariana Castellanos Sanchez | Round 6: Gaitan Santos, Daniela - Mariana Castellanos Sanchez | ? | |
| May 17, 2026 | Mariana Castellanos Sanchez | 0–1 | Laura Daniela Torres Torres | Round 5: Mariana Castellanos Sanchez - Laura Daniela Torres Torres | Scandinavian Defense: Main Line | |
| May 17, 2026 | Juana Valentina Suarez Torres | 0–1 | Mariana Castellanos Sanchez | Round 3: Juana Valentina Suarez Torres - Mariana Castellanos Sanchez | Queen's Pawn Game: Accelerated London System | |
| May 16, 2026 | Mariana Castellanos Sanchez | 0–1 | Olier Robayo | Round 4: Mariana Castellanos Sanchez - Olier Robayo, Mishelle Dayana | Owen Defense | |
| May 16, 2026 | Mariana Castellanos Sanchez | 0–1 | Pinilla Rozo | Round 6: Mariana Castellanos Sanchez - Pinilla Rozo, Maria Alejandra | Sicilian Defense: Modern Variations | |
| May 15, 2026 | Mariana Castellanos Sanchez | 1–0 | Dana Gabriela Nino Moros | Round 5: Mariana Castellanos Sanchez - Dana Gabriela Nino Moros | Italian Game: Classical Variation, Giuoco Pianissimo | |
| May 15, 2026 | Ibarra Ramos | 0–1 | Mariana Castellanos Sanchez | Round 4: Ibarra Ramos, Laura Manuela - Mariana Castellanos Sanchez | French Defense: Rubinstein Variation | |
| May 15, 2026 | Olier Robayo | 0–1 | Mariana Castellanos Sanchez | Round 7: Olier Robayo, Mishelle Dayana - Mariana Castellanos Sanchez | Bishop's Opening: Berlin Defense | |
| May 15, 2026 | Mariana Castellanos Sanchez | 0–1 | Vargas Abril | Round 2: Mariana Castellanos Sanchez - Vargas Abril, Angie Liseth | Italian Game: Rousseau Gambit | |
| May 15, 2026 | Corredor Agamez | 1–0 | Mariana Castellanos Sanchez | Round 1: Corredor Agamez, Nicole Vanessa - Mariana Castellanos Sanchez | Italian Game: Giuoco Pianissimo, Canal Variation | |
| May 9, 2026 | Mariana Castellanos Sanchez | 0–1 | Corredor Agamez | Round 7: Mariana Castellanos Sanchez - Corredor Agamez, Nicole Vanessa | Italian Game: Classical Variation, with d5 | |
| May 9, 2026 | Dana Gabriela Nino Moros | 0–1 | Mariana Castellanos Sanchez | Round 4: Dana Gabriela Nino Moros - Mariana Castellanos Sanchez | Vienna Game: Stanley Variation | |
| May 9, 2026 | Juana Valentina Suarez Torres | 0–1 | Mariana Castellanos Sanchez | Round 5: Juana Valentina Suarez Torres - Mariana Castellanos Sanchez | Queen's Pawn Game: Accelerated London System | |
| May 9, 2026 | Mariana Castellanos Sanchez | 1–0 | Ibarra Ramos | Round 3: Mariana Castellanos Sanchez - Ibarra Ramos, Laura Manuela | Sicilian Defense: Old Sicilian | |
| May 9, 2026 | Vargas Abril | 1–0 | Mariana Castellanos Sanchez | Round 2: Vargas Abril, Angie Liseth - Mariana Castellanos Sanchez | Vienna Game: Anderssen Defense | |
| May 9, 2026 | Mariana Castellanos Sanchez | 0–1 | Pinilla Rozo | Round 1: Mariana Castellanos Sanchez - Pinilla Rozo, Maria Alejandra | Sicilian Defense: Modern Variations | |
| May 9, 2026 | Mariana Castellanos Sanchez | 0–1 | Olier Robayo | Round 6: Mariana Castellanos Sanchez - Olier Robayo, Mishelle Dayana | Sicilian Defense: O'Kelly Variation, Venice System | |
