| May 23, 2026 | Ruiz Vazquez | 1–0 | Ruiz Buendia | Ronda 9: Ruiz Vazquez, Javier - Ruiz Buendia, Miguel | Sicilian Defense: Najdorf Variation | |
| May 23, 2026 | Ruiz Buendia | 1–0 | Lopez Paniego | Ronda 8: Ruiz Buendia, Miguel - Lopez Paniego, Noel | Ruy Lopez: Classical Variation, Central Variation | |
| May 23, 2026 | Penas Hernandez | 0–1 | Ruiz Buendia | Ronda 7: Penas Hernandez, Yolanda - Ruiz Buendia, Miguel | Sicilian Defense: Najdorf Variation, Opocensky Variation, Traditional Line | |
| May 23, 2026 | Ruiz Buendia | 1–0 | Aspron Cabanas | Ronda 6: Ruiz Buendia, Miguel - Aspron Cabanas, Roberto | Sicilian Defense | |
| May 23, 2026 | Ruiz Buendia | 1–0 | Abalos San Jose | Ronda 2: Ruiz Buendia, Miguel - Abalos San Jose, Belen | Philidor Defense: Exchange Variation | |
| Apr 11, 2026 | Harshavardhan G B | 1–0 | Ruiz Buendia | Round 8: Harshavardhan G B - Ruiz Buendia, Miguel | Italian Game: Giuoco Pianissimo, Italian Four Knights Variation | |
| Apr 8, 2026 | Oro | 1–0 | Ruiz Buendia | Round 2: Oro, Faustino - Ruiz Buendia, Miguel | English Opening: Symmetrical Variation, Four Knights Variation | |
| Apr 5, 2026 | Ruiz Buendia | 0–1 | Amartuvshin | X Open Semana Santa 2026 - Grupo A | Sicilian Defense: Taimanov Variation | |
| Apr 4, 2026 | Ruiz Buendia | 0–1 | Xie | X Open Semana Santa 2026 - Grupo A | Ruy Lopez: Morphy Defense, Schliemann Defense Deferred | |
| Apr 3, 2026 | Fiorito | 0–1 | Ruiz Buendia | X Open Semana Santa 2026 - Grupo A | Nimzo-Indian Defense: Rubinstein System, Rubinstein Variation | |
| Mar 30, 2026 | Ruiz Buendia | 0–1 | Stefansson | Reykjavik Open 2026 | Sicilian Defense: Nimzowitsch Variation, Advance Variation | |
| Mar 28, 2026 | Ruiz Buendia | 0–1 | Sochacki | Reykjavik Open 2026 | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Mar 26, 2026 | Wadsworth | 1–0 | Ruiz Buendia | Reykjavik Open 2026 | Neo-Grünfeld Defense: Classical Variation, Original Defense | |
| Mar 26, 2026 | Ruiz Buendia | ½–½ | Brodsky | Reykjavik Open 2026 | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | |
| Mar 14, 2026 | Fernandez Guillen | ½–½ | Ruiz Buendia | Ronda 9 Tres Peons Vs Mollet: Fernandez Guillen, Ernesto J. - Ruiz Buendia, Miguel | Zukertort Opening: Sicilian Invitation | |
| Feb 20, 2026 | Ruiz Buendia | 0–1 | Vergara Anton | Open Pamplona 26 | French Defense: Rubinstein Variation, Blackburne Defense | |
| Feb 18, 2026 | Ruiz Buendia | 1–0 | Sola Plaza | Open Pamplona 26 | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| Feb 18, 2026 | Merino Olaverri | 0–1 | Ruiz Buendia | Open Pamplona 26 | Queen's Pawn Game: Accelerated London System | |
| Feb 18, 2026 | Ruiz Buendia | 1–0 | Mizzi | Open Pamplona 26 | French Defense: Winawer Variation, Advance Variation | |
| Feb 17, 2026 | Barcelo Melnyk | 1–0 | Ruiz Buendia | Open Pamplona 26 | Sicilian Defense: Najdorf Variation, English Attack | |
| Feb 17, 2026 | Ruiz Buendia | 1–0 | Salas Giralda | Open Pamplona 26 | Sicilian Defense: Taimanov Variation | |
| Feb 16, 2026 | Goni Sierro | 1–0 | Ruiz Buendia | Open Pamplona 26 | King's Indian Defense: Makogonov Variation | |
| Feb 15, 2026 | Ruiz Buendia | ½–½ | Pedchenko Bondar | Open Pamplona 26 | Ruy Lopez: Open, Main Line | |
| Feb 14, 2026 | Pascual Garcia | 0–1 | Ruiz Buendia | Open Pamplona 26 | English Opening: King's English Variation | |
| Jan 4, 2026 | Meshkovs | 1–0 | Ruiz Buendia | Round 8: Meshkovs, Nikita - Ruiz Buendia, Miguel | Queen's Pawn Game: Symmetrical Variation | |
| Dec 19, 2025 | Ruiz Buendia | 0–1 | Carrascoso Morales | ABSOLUTO_2025 | King's Indian Defense: Makogonov Variation | |
| Dec 18, 2025 | Prado Acebo | 1–0 | Ruiz Buendia | ABSOLUTO_2025 | Slav Defense: Quiet Variation, Schallopp Defense | |
| Dec 17, 2025 | Ruiz Buendia | 1–0 | Hernandez Leon | ABSOLUTO_2025 | Sicilian Defense: O'Kelly Variation, Réti System | |
| Dec 16, 2025 | Navarro Martinez | ½–½ | Ruiz Buendia | ABSOLUTO_2025 | Nimzo-Indian Defense: Normal Variation, Botvinnik System | |
| Dec 15, 2025 | Ruiz Buendia | 0–1 | Pichot | ABSOLUTO_2025 | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Dec 14, 2025 | Cuenca Jimenez | ½–½ | Ruiz Buendia | ABSOLUTO_2025 | Réti Opening | |
| Dec 13, 2025 | Ruiz Buendia | 1–0 | Calvo Gonzalez | ABSOLUTO_2025 | Sicilian Defense: Najdorf Variation, English Attack | |
| Dec 12, 2025 | Berrocal Ruiz | 0–1 | Ruiz Buendia | ABSOLUTO_2025 | Neo-Grünfeld Defense: Classical Variation, Modern Defense | |
| Dec 11, 2025 | Ruiz Buendia | ½–½ | Gonzalez Gonzalez | ABSOLUTO_2025 | French Defense: McCutcheon Variation, Dr. Olland Variation | |
| Sep 28, 2025 | Ruiz Buendia | 0–1 | Cano Alcaraz | Round 13: Ruiz Buendia, Miguel - Cano Alcaraz, Juan Jose | Ruy Lopez: Closed, Breyer Defense, Zaitsev Hybrid | |
| Sep 28, 2025 | Benavides Conza | 0–1 | Ruiz Buendia | Round 12: Benavides Conza, Diego Angelo - Ruiz Buendia, Miguel | Indian Defense: Dzindzi-Indian Defense | |
| Sep 28, 2025 | Ruiz Buendia | 0–1 | Ticona Rocabado | Round 11: Ruiz Buendia, Miguel - Ticona Rocabado, Licael Roderick | French Defense: Steinitz Variation, Boleslavsky Variation | |
| Sep 28, 2025 | Ruiz Alfaro | 0–1 | Ruiz Buendia | Round 10: Ruiz Alfaro, Darrel - Ruiz Buendia, Miguel | Slav Defense: Quiet Variation, Schallopp Defense | |
| Sep 28, 2025 | Ruiz Buendia | 1–0 | Moscoso Tellez | Round 9: Ruiz Buendia, Miguel - Moscoso Tellez, Joe Goldtie Marshall | Queen's Gambit Declined: Tarrasch Defense, Pseudo-Tarrasch Bishop Attack | |
| Sep 28, 2025 | Ibarra Carlos Roberto | 1–0 | Ruiz Buendia | Round 8: Ibarra Carlos Roberto - Ruiz Buendia, Miguel | Ruy Lopez: Exchange Variation, Gligoric Variation | |
| Sep 27, 2025 | Ruiz Buendia | 0–1 | Parra Gonzales | Round 7: Ruiz Buendia, Miguel - Parra Gonzales, Andre Leonardo | Sicilian Defense: Moscow Variation | |
| Sep 27, 2025 | Paredes Minaya | 0–1 | Ruiz Buendia | Round 6: Paredes Minaya, Christian Jesus - Ruiz Buendia, Miguel | Ruy Lopez: Morphy Defense, Anderssen Variation | |
| Sep 27, 2025 | Ruiz Buendia | 0–1 | Fogo Esquivel | Round 5: Ruiz Buendia, Miguel - Fogo Esquivel, Levi Kalani Alexander | Elephant Gambit | |
| Sep 27, 2025 | Poma Bernal | 0–1 | Ruiz Buendia | Round 4: Poma Bernal, Cristian Andres - Ruiz Buendia, Miguel | Nimzo-Indian Defense: Normal Variation, Classical Defense | |
| Sep 27, 2025 | Ruiz Buendia | 1–0 | Vilca Contreras | Round 3: Ruiz Buendia, Miguel - Vilca Contreras, Dante Ivan | Semi-Slav Defense: Stoltz Variation | |
| Sep 27, 2025 | Madaminov | 1–0 | Ruiz Buendia | Round 2: Madaminov, Mukhiddin - Ruiz Buendia, Miguel | Italian Game: Giuoco Pianissimo, Italian Four Knights Variation | |
| Sep 27, 2025 | Ruiz Buendia | 1–0 | Morante Bautista | Round 1: Ruiz Buendia, Miguel - Morante Bautista, Tiago Daniel | Dutch Defense: Hopton Attack | |
| Sep 25, 2025 | Ruiz Buendia | 1–0 | Salas Gonzales | Round 9: Ruiz Buendia, Miguel - Salas Gonzales, David Ademar | Sicilian Defense: Moscow Variation, Sokolsky Variation | |
| Sep 25, 2025 | Parra Gonzales | 1–0 | Ruiz Buendia | Round 8: Parra Gonzales, Andre Leonardo - Ruiz Buendia, Miguel | Ruy Lopez: Morphy Defense, Anderssen Variation | |
| Sep 25, 2025 | Ruiz Buendia | 0–1 | Alarcon Vega | Round 7: Ruiz Buendia, Miguel - Alarcon Vega, Icker Aldair | King's Indian Defense: Makogonov Variation | |
| Sep 24, 2025 | Caceres Sandoval | 0–1 | Ruiz Buendia | Round 6: Caceres Sandoval, Eduardo - Ruiz Buendia, Miguel | Italian Game: Two Knights Defense, Perreux Variation | |
| Sep 24, 2025 | Ruiz Buendia | 0–1 | Vasquez Vargas | Round 5: Ruiz Buendia, Miguel - Vasquez Vargas, Henry Richard | Alekhine Defense: Four Pawns Attack, Fianchetto Variation | |
| Sep 24, 2025 | Ruiz Buendia | 1–0 | Salazar Flores | Round 4: Ruiz Buendia, Miguel - Salazar Flores, Yerick Alexander | French Defense: Classical Variation | |
| Sep 23, 2025 | Cardoza Diaz | 0–1 | Ruiz Buendia | Round 2: Cardoza Diaz, Aaron - Ruiz Buendia, Miguel | Queen's Pawn Game: Colle System, Traditional Colle | |
| Sep 23, 2025 | Ruiz Buendia | 1–0 | Reyes Zavaleta | Round 1: Ruiz Buendia, Miguel - Reyes Zavaleta, Sergio Gabriel | French Defense: Steinitz Variation, Boleslavsky Variation | |
| Sep 21, 2025 | Lazavik | 1–0 | Ruiz Buendia | Round 3: Lazavik, Denis - Ruiz Buendia, Miguel | Italian Game: Classical Variation, Giuoco Pianissimo, with a5 | |
| Jul 21, 2025 | Ruiz Buendia | 1–0 | Narciso Dublan | Round 9: Ruiz Buendia, Miguel - Narciso Dublan, Marc | Pirc Defense: Austrian Attack, Dragon Formation | |
| Jul 20, 2025 | Sviridenko | 0–1 | Ruiz Buendia | Round 8: Sviridenko, Yaroslav - Ruiz Buendia, Miguel | Semi-Slav Defense | |
| Jul 19, 2025 | Ruiz Buendia | ½–½ | Nagare Kaivalya Sandip | Round 7: Ruiz Buendia, Miguel - Nagare Kaivalya Sandip | Ruy Lopez: Morphy Defense, Steinitz Deferred | |
| Jul 17, 2025 | Ruiz Buendia | 0–1 | Aakash G | Round 5: Ruiz Buendia, Miguel - Aakash G | French Defense: Steinitz Variation, Boleslavsky Variation | |
| Jul 16, 2025 | Kshatriya Nitin Vekhande | ½–½ | Ruiz Buendia | Round 4: Kshatriya Nitin Vekhande - Ruiz Buendia, Miguel | Sicilian Defense: Najdorf Variation, Opocensky Variation, Traditional Line | |
| Jul 15, 2025 | Ruiz Buendia | 1–0 | Majumder Shrayan | Round 3: Ruiz Buendia, Miguel - Majumder Shrayan | Scandinavian Defense: Gubinsky-Melts Defense | |
| Jul 13, 2025 | Ruiz Buendia | ½–½ | Badrinath | Round 1: Ruiz Buendia, Miguel - Badrinath, S. | Ruy Lopez: Morphy Defense | |
| Jul 12, 2025 | Ruiz Buendia | * | Bogdanov | Round 9: Ruiz Buendia, Miguel - Bogdanov, Artyom | ? | |
| Jul 11, 2025 | Chavez Suarez | 0–1 | Ruiz Buendia | Round 8: Chavez Suarez, Carlos Alberto - Ruiz Buendia, Miguel | King's Knight Opening: Normal Variation | |
| Jul 10, 2025 | Ruiz Buendia | 0–1 | Aguero Jimenez | Round 7: Ruiz Buendia, Miguel - Aguero Jimenez, Luis Lazaro | Caro-Kann Defense: Two Knights Attack | |
| Jul 8, 2025 | Ruiz Buendia | 1–0 | Majumder Shrayan | Round 5: Ruiz Buendia, Miguel - Majumder Shrayan | French Defense: Steinitz Variation, Boleslavsky Variation | |
| Jul 7, 2025 | Harshit Ranjan Sahu | ½–½ | Ruiz Buendia | Round 4: Harshit Ranjan Sahu - Ruiz Buendia, Miguel | Italian Game: Giuoco Pianissimo, Normal | |
| Jul 6, 2025 | Ruiz Buendia | 1–0 | Povill Claros | Round 3: Ruiz Buendia, Miguel - Povill Claros, Xavier | Caro-Kann Defense: Classical Variation, Flohr Variation | |
| Jul 5, 2025 | Alonso Gimenez | ½–½ | Ruiz Buendia | Round 2: Alonso Gimenez, Mauro - Ruiz Buendia, Miguel | Sicilian Defense: Sozin Attack, Leonhardt Variation | |
| Jul 4, 2025 | Ruiz Buendia | 1–0 | Camps Abadia | Round 1: Ruiz Buendia, Miguel - Camps Abadia, Arnau | French Defense: Steinitz Variation, Boleslavsky Variation | |
| Jun 27, 2025 | Petrosyan | ½–½ | Ruiz Buendia | Round 6: Petrosyan, Manuel - Ruiz Buendia, Miguel | Italian Game: Classical Variation, Giuoco Pianissimo | |
| Apr 21, 2025 | Ruiz Buendia | 1–0 | Germer | Freestyle Chess Open A | ? | |
| Apr 21, 2025 | Sliwicki | 0–1 | Ruiz Buendia | Freestyle Chess Open A | ? | |
| Apr 20, 2025 | Ruiz Buendia | ½–½ | Schimnatkowski | Freestyle Chess Open A | ? | |
| Apr 20, 2025 | Kearns | ½–½ | Ruiz Buendia | Freestyle Chess Open A | ? | |
| Apr 18, 2025 | Ruiz Buendia | 0–1 | Kumala | Round 3: Ruiz Buendia, Miguel - Kumala, Aleksander | ? | |
| Apr 18, 2025 | Navara | 1–0 | Ruiz Buendia | Round 2: Navara, David - Ruiz Buendia, Miguel | ? | |
| Apr 15, 2025 | Lohr | ½–½ | Ruiz Buendia | Reykjavik Open 2025 | Sicilian Defense: Najdorf Variation, Adams Attack | |
| Apr 14, 2025 | Ruiz Buendia | 0–1 | Jacobson | Reykjavik Open 2025 | Italian Game: Classical Variation, Greco Gambit | |
| Apr 13, 2025 | Ruiz Buendia | 1–0 | Schwarz | Reykjavik Open 2025 | Bogo-Indian Defense: Wade-Smyslov Variation | |
| Apr 13, 2025 | Kunz | 0–1 | Ruiz Buendia | Reykjavik Open 2025 | Sicilian Defense: Alapin Variation, Smith-Morra Declined | |
| Dec 19, 2024 | Garcia Ramos | ½–½ | Ruiz Buendia | CE_ABSOLUTO | Italian Game: Giuoco Pianissimo, Normal | |
| Dec 18, 2024 | Perez Candelario | 1–0 | Ruiz Buendia | CE_ABSOLUTO | Ruy Lopez: Closed, Anti-Marshall | |
| Dec 17, 2024 | Ruiz Buendia | 1–0 | Tabuenca Mendataurigoitia | CE_ABSOLUTO | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Gurgenidze Variation | |
| Dec 16, 2024 | Ruiz Buendia | 1–0 | Horcajuelo Rocamora | CE_ABSOLUTO | Sicilian Defense: Moscow Variation | |
| Dec 15, 2024 | Sanleon Pravisano | 0–1 | Ruiz Buendia | CE_ABSOLUTO | Semi-Slav Defense: Normal Variation | |
| Dec 14, 2024 | Ruiz Buendia | 0–1 | Alsina Leal | CE_ABSOLUTO | Sicilian Defense: O'Kelly Variation, Venice System | |
| Dec 13, 2024 | Suarez Gomez | 0–1 | Ruiz Buendia | CE_ABSOLUTO | Sicilian Defense: Najdorf Variation | |
| Dec 12, 2024 | Ruiz Buendia | 0–1 | Camacho Collados | CE_ABSOLUTO | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Dec 11, 2024 | Rodriguez Dogmoch | 0–1 | Ruiz Buendia | CE_ABSOLUTO | Four Knights Game: Gunsberg Variation | |
| Oct 1, 2024 | Barrenechea Bahamonde | 0–1 | Ruiz Buendia | IBEROAMERICANO | Center Game: Berger Variation | |
| Sep 30, 2024 | Ruiz Buendia | ½–½ | Domingo Nunez | IBEROAMERICANO | Ruy Lopez: Closed, Karpov Variation | |
| Sep 29, 2024 | Leiva | 1–0 | Ruiz Buendia | IBEROAMERICANO | Italian Game: Giuoco Pianissimo, Normal | |
| Sep 28, 2024 | Ruiz Buendia | 1–0 | Fernandez Sanchez | IBEROAMERICANO | Ruy Lopez: Morphy Defense | |
| Sep 27, 2024 | Ruiz Buendia | 0–1 | Henriquez Villagra | IBEROAMERICANO | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | |
| Sep 27, 2024 | Castillo Beitia | 0–1 | Ruiz Buendia | IBEROAMERICANO | Queen's Pawn Game: Accelerated London System | |
| Sep 26, 2024 | Merario Alarcon | 1–0 | Ruiz Buendia | IBEROAMERICANO | Four Knights Game: Glek System | |
| Sep 25, 2024 | Ruiz Buendia | ½–½ | Matamoros Franco | IBEROAMERICANO | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| Aug 17, 2024 | Ruiz Buendia | ½–½ | Forcen Esteban | CE Rapidas | Gunderam Defense | |