| Apr 20, 2026 | Castellanos | ½–½ | Fonseca Guarin | Round 7: Castellanos, Juan Jose - Fonseca Guarin, John Henry | French Defense: Advance Variation, Paulsen Attack | |
| Apr 20, 2026 | Johnny Steven Zamora Martinez | ½–½ | Castellanos | Round 6: Johnny Steven Zamora Martinez - Castellanos, Juan Jose | Indian Defense: Accelerated London System | |
| Apr 20, 2026 | Castellanos | 0–1 | Becerra | Round 5: Castellanos, Juan Jose - Becerra, Sergio | Sicilian Defense: Dragon Variation, Yugoslav Attack, Early Deviations | |
| Apr 20, 2026 | Juan Esteban Huerfano Rico | 0–1 | Castellanos | Round 4: Juan Esteban Huerfano Rico - Castellanos, Juan Jose | Ware Opening: Crab Variation | |
| Apr 20, 2026 | Giraldo Castano | * | Castellanos | Round 2: Giraldo Castano, Miguel - Castellanos, Juan Jose | ? | |
| Apr 20, 2026 | Castellanos | 0–1 | Murcia Molina | Round 3: Castellanos, Juan Jose - Murcia Molina, Manuel Hernando | Sicilian Defense: Scheveningen Variation, English Attack, with f3 | |
| Apr 19, 2026 | Castellanos | 0–1 | Lopez Ramirez | Round 1: Castellanos, Juan Jose - Lopez Ramirez, Jorge Hernan | Ruy Lopez: Schliemann Defense, Jaenisch Gambit Accepted | |
| Mar 28, 2026 | Castellanos | 0–1 | Salazar Castelblanco | Round 6: Castellanos, Juan Jose - Salazar Castelblanco, Francisco Javier | Ruy Lopez: Morphy Defense, Modern Steinitz Defense | |
| Mar 28, 2026 | Yeomans Luna | 1–0 | Castellanos | Round 5: Yeomans Luna, Elsie Maribel - Castellanos, Juan Jose | King's Indian Defense: Normal Variation, King's Knight Variation | |
| Mar 28, 2026 | Rodriguez Sanchez | 1–0 | Castellanos | Round 1: Rodriguez Sanchez, Diego Eduardo - Castellanos, Juan Jose | Indian Defense: Accelerated London System | |
| Mar 23, 2026 | Castellanos | 1–0 | Jimenez Escobar | Round 7: Castellanos, Juan Jose - Jimenez Escobar, Sebastian Andres | Sicilian Defense: Old Sicilian | |
| Mar 23, 2026 | Gurrute Samboni | 1–0 | Castellanos | Round 6: Gurrute Samboni, Samuel Josue - Castellanos, Juan Jose | Sicilian Defense: Modern Variations | |
| Mar 22, 2026 | Castellanos | 1–0 | Miguel Angel Medrano Cardenas | Round 5: Castellanos, Juan Jose - Miguel Angel Medrano Cardenas | Ruy Lopez: Berlin Defense, Rio Gambit Accepted | |
| Mar 22, 2026 | Barrios Gonzalez | 1–0 | Castellanos | Round 4: Barrios Gonzalez, Federico - Castellanos, Juan Jose | Sicilian Defense: Modern Variations | |
| Mar 22, 2026 | Castellanos | 0–1 | Morales Aldana | Round 3: Castellanos, Juan Jose - Morales Aldana, David Alejandro | Sicilian Defense: Kan Variation, Knight Variation | |
| Mar 20, 2026 | Castellanos | 0–1 | Comas Bermeo | Round 1: Castellanos, Juan Jose - Comas Bermeo, Emilie | Ruy Lopez: Berlin Defense, Beverwijk Variation | |
