| May 27, 2023 | Eduardo Cesar Maestre | * | Ismael Diaz Castro | Round 8: Eduardo Cesar Maestre - Ismael Diaz Castro | ? | |
| May 27, 2023 | Sergio Cardoso Garcia | * | Ismael Diaz Castro | Round 7: Sergio Cardoso Garcia - Ismael Diaz Castro | ? | |
| May 27, 2023 | Ismael Diaz Castro | * | Francisco Javier Tamajon Castilla | Round 6: Ismael Diaz Castro - Francisco Javier Tamajon Castilla | ? | |
| May 27, 2023 | Ismael Diaz Castro | * | Antonio Estevez Begines | Round 5: Ismael Diaz Castro - Antonio Estevez Begines | ? | |
| May 27, 2023 | Soren Peschardt | * | Ismael Diaz Castro | Round 4: Soren Peschardt - Ismael Diaz Castro | ? | |
| May 27, 2023 | Ismael Diaz Castro | * | Jose Antonio Jimenez Aguilar | Round 3: Ismael Diaz Castro - Jose Antonio Jimenez Aguilar | ? | |
| May 27, 2023 | Jose Miguel Martinez Espigares | * | Ismael Diaz Castro | Round 2: Jose Miguel Martinez Espigares - Ismael Diaz Castro | ? | |
| May 27, 2023 | Ismael Diaz Castro | * | Laura Herrero Pena | Round 1: Ismael Diaz Castro - Laura Herrero Pena | ? | |
| Feb 28, 2023 | Cristian Silva Lucena | 0–1 | Ismael Diaz Castro | Round 10: Cristian Silva Lucena - Ismael Diaz Castro | English Opening: King's English Variation, Three Knights System | |
| Feb 28, 2023 | Luis Manuel Esquivias Quintero | 1–0 | Ismael Diaz Castro | Round 9: Luis Manuel Esquivias Quintero - Ismael Diaz Castro | Ruy Lopez: Classical Variation | |
| Feb 28, 2023 | Ismael Diaz Castro | 0–1 | Mario Balbuena Fuentes | Round 8: Ismael Diaz Castro - Mario Balbuena Fuentes | Pirc Defense | |
| Feb 28, 2023 | Ismael Diaz Castro | 1–0 | Enrique Rodriguez Pereira | Round 7: Ismael Diaz Castro - Enrique Rodriguez Pereira | Queen's Pawn Game: Symmetrical Variation, Pseudo-Catalan | |
| Feb 28, 2023 | Manuel Alcaraz Zambrano | 0–1 | Ismael Diaz Castro | Round 6: Manuel Alcaraz Zambrano - Ismael Diaz Castro | Nimzo-Larsen Attack: Classical Variation | |
| Feb 28, 2023 | Ismael Diaz Castro | 1–0 | Manuel Carrabeo Garcia | Round 5: Ismael Diaz Castro - Manuel Carrabeo Garcia | French Defense: Rubinstein Variation, Fort Knox Variation | |
| Feb 28, 2023 | Carlos Javier Bernabeu Lopez | 1–0 | Ismael Diaz Castro | Round 4: Carlos Javier Bernabeu Lopez - Ismael Diaz Castro | King's Indian Defense: Orthodox Variation, Positional Defense | |
| Feb 28, 2023 | Ismael Diaz Castro | 1–0 | Manuel Sanchez del Prado | Round 3: Ismael Diaz Castro - Manuel Sanchez del Prado | Caro-Kann Defense: Tartakower Variation | |
| Feb 28, 2023 | Felix Ramos Suria | 0–1 | Ismael Diaz Castro | Round 2: Felix Ramos Suria - Ismael Diaz Castro | Sicilian Defense: Alapin Variation, Barmen Defense | |
| Feb 28, 2023 | Ismael Diaz Castro | 1–0 | Israel Cruz Rodriguez | Round 1: Ismael Diaz Castro - Israel Cruz Rodriguez | Scandinavian Defense: Main Line | |
| Feb 28, 2023 | David Olivier Badier Carave | ½–½ | Ismael Diaz Castro | Round 7: David Olivier Badier Carave - Ismael Diaz Castro | King's Indian Defense: Fianchetto Variation, Larsen Defense | |
| Feb 28, 2023 | Jose Domingo Calle Moreau | 0–1 | Ismael Diaz Castro | Round 6: Jose Domingo Calle Moreau - Ismael Diaz Castro | Four Knights Game: Spanish Variation, Symmetrical Variation | |
| Feb 28, 2023 | Ismael Diaz Castro | 1–0 | Abel Salazar Romero | Round 5: Ismael Diaz Castro - Abel Salazar Romero | Queen's Indian Defense: Fianchetto Variation, Sämisch Variation | |
| Feb 28, 2023 | Ismael Diaz Castro | 0–1 | Carlos Javier Bernabeu Lopez | Round 4: Ismael Diaz Castro - Carlos Javier Bernabeu Lopez | Ruy Lopez: Morphy Defense, Cozio Defense | |
| Feb 28, 2023 | Felix Ramos Suria | 0–1 | Ismael Diaz Castro | Round 3: Felix Ramos Suria - Ismael Diaz Castro | Modern Defense | |
| Feb 28, 2023 | Ismael Diaz Castro | 1–0 | Christian Fernando Gutierrez Marconi | Round 2: Ismael Diaz Castro - Christian Fernando Gutierrez Marconi | Scandinavian Defense: Modern Variation | |
| Feb 28, 2023 | Jonathan Salas Lerida | 0–1 | Ismael Diaz Castro | Round 1: Jonathan Salas Lerida - Ismael Diaz Castro | English Opening: King's English Variation | |
