| Nov 21, 2023 | Andy Woodward | 1–0 | Carlos Sandoval Mercado | Round 9: Andy Woodward - Carlos Sandoval Mercado | King's Indian Defense: Semi-Averbakh System | |
| Nov 20, 2023 | Carlos Sandoval Mercado | ½–½ | Bilel Bellahcene | Round 8: Carlos Sandoval Mercado - Bilel Bellahcene | Nimzo-Indian Defense: Normal Variation, Botvinnik System | |
| Nov 20, 2023 | Siddharth Jagadeesh | ½–½ | Carlos Sandoval Mercado | Round 7: Siddharth Jagadeesh - Carlos Sandoval Mercado | Sicilian Defense: Taimanov Variation, Bastrikov Variation | |
| Nov 19, 2023 | Carlos Sandoval Mercado | 1–0 | Gauri Shankar | Round 6: Carlos Sandoval Mercado - Gauri Shankar | King's Indian Defense: Makogonov Variation | |
| Nov 19, 2023 | Cristhian Cruz | ½–½ | Carlos Sandoval Mercado | Round 5: Cristhian Cruz - Carlos Sandoval Mercado | Benoni Defense | |
| Nov 18, 2023 | Carlos Sandoval Mercado | 0–1 | Ryo Chen | Round 4: Carlos Sandoval Mercado - Ryo Chen | King's Indian Defense: Fianchetto Variation, Uhlmann-Szabo System | |
| Nov 18, 2023 | Fidel Corrales Jimenez | 1–0 | Carlos Sandoval Mercado | Round 3: Fidel Corrales Jimenez - Carlos Sandoval Mercado | Queen's Gambit Declined: Exchange Variation, Reshevsky Variation | |
| Nov 17, 2023 | Carlos Sandoval Mercado | 1–0 | Aarav Dengla | Round 2: Carlos Sandoval Mercado - Aarav Dengla | Queen's Gambit Declined: Janowski Variation | |
| Nov 17, 2023 | Dimitar Mardov | ½–½ | Carlos Sandoval Mercado | Round 1: Dimitar Mardov - Carlos Sandoval Mercado | Dutch Defense: Leningrad Variation, Warsaw Variation | |
| Nov 12, 2023 | Carlos Sandoval Mercado | 0–1 | Gilberto Hernandez Guerrero | Round 9: Carlos Sandoval Mercado - Gilberto Hernandez Guerrero | Bogo-Indian Defense: Grünfeld Variation | |
| Nov 11, 2023 | Javier Benitez Lozano | 0–1 | Carlos Sandoval Mercado | Round 8: Javier Benitez Lozano - Carlos Sandoval Mercado | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Nov 11, 2023 | Carlos Sandoval Mercado | 1–0 | Ivan Alonso Limon Olmos | Round 7: Carlos Sandoval Mercado - Ivan Alonso Limon Olmos | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Nov 10, 2023 | Joshua Adrian Avila Rodriguez | 1–0 | Carlos Sandoval Mercado | Round 6: Joshua Adrian Avila Rodriguez - Carlos Sandoval Mercado | Sicilian Defense: Kalashnikov Variation | |
| Nov 10, 2023 | Carlos Sandoval Mercado | * | Juan Carlos Obregon Rivero | Round 5: Carlos Sandoval Mercado - Juan Carlos Obregon Rivero | Rat Defense: English Rat | |
| Nov 9, 2023 | Gerardo Antonio Gracia Alvarez | 0–1 | Carlos Sandoval Mercado | Round 4: Gerardo Antonio Gracia Alvarez - Carlos Sandoval Mercado | Sicilian Defense: Taimanov Variation | |
| Nov 9, 2023 | Carlos Sandoval Mercado | 0–1 | Allan Martinez Castaneda | Round 3: Carlos Sandoval Mercado - Allan Martinez Castaneda | Queen's Pawn Game: Modern Defense | |
| Nov 8, 2023 | Moises Omar Garcia Nevarez | 0–1 | Carlos Sandoval Mercado | Round 2: Moises Omar Garcia Nevarez - Carlos Sandoval Mercado | Indian Defense: Dzindzi-Indian Defense | |
| Nov 7, 2023 | Carlos Sandoval Mercado | 1–0 | Piero Raul Lopez Padilla | Round 1: Carlos Sandoval Mercado - Piero Raul Lopez Padilla | Nimzo-Indian Defense: Normal Variation, Classical Defense | |
| Oct 15, 2023 | Carlos Sandoval Mercado | 0–1 | Luis Ernesto Quesada Perez | Round 9: Carlos Sandoval Mercado - Luis Ernesto Quesada Perez | King's Indian Defense: Makogonov Variation | |
| Oct 15, 2023 | Abel Fabian Lopez Gonzalez | 0–1 | Carlos Sandoval Mercado | Round 8: Abel Fabian Lopez Gonzalez - Carlos Sandoval Mercado | English Opening: Neo-Catalan | |
| Oct 14, 2023 | Carlos Sandoval Mercado | 1–0 | Reyson Ricardo Rodriguez Basulto | Round 7: Carlos Sandoval Mercado - Reyson Ricardo Rodriguez Basulto | Benko Gambit Accepted: Fully Accepted Variation | |
| Oct 14, 2023 | Jorge Roberto Elias Reyes | 1–0 | Carlos Sandoval Mercado | Round 6: Jorge Roberto Elias Reyes - Carlos Sandoval Mercado | Sicilian Defense: Modern Variations, Main Line | |
| Oct 13, 2023 | Carlos Sandoval Mercado | 1–0 | Jose Antonio Garcia De Dios | Round 5: Carlos Sandoval Mercado - Jose Antonio Garcia De Dios | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Oct 13, 2023 | Rene Alexis Herrera Aguilar | 0–1 | Carlos Sandoval Mercado | Round 4: Rene Alexis Herrera Aguilar - Carlos Sandoval Mercado | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | |
| Oct 13, 2023 | Rene Alexis Herrera Aguilar | * | Carlos Sandoval Mercado | Round 4: Rene Alexi Herrera Aguilar - Carlos Sandoval Mercado | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | |
| Oct 13, 2023 | Carlos Sandoval Mercado | 1–0 | Laritza Alfonso Ruisanchez | Round 1: Carlos Sandoval Mercado - Laritza Alfonso Ruisanchez | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Oct 13, 2023 | Carlos Sandoval Mercado | 0–1 | Sandro Mareco | Round 3: Carlos Sandoval Mercado - Sandro Mareco | Nimzo-Indian Defense: Normal Variation, Classical Defense | |
| Oct 13, 2023 | Omar Almeida Quintana | ½–½ | Carlos Sandoval Mercado | Round 2: Omar Almeida Quintana - Carlos Sandoval Mercado | Queen's Gambit Declined: Ragozin Defense | |
| Apr 9, 2023 | Carlos Sandoval Mercado | 1–0 | Jesus A Guzman Cruz | Round 8 | 11-20: Carlos Sandoval Mercado - Jesus A Guzman Cruz | Queen's Indian Defense: Fianchetto Variation, Nimzowitsch Variation | |
| Apr 9, 2023 | Nikola Mitkov | 1–0 | Carlos Sandoval Mercado | Round 9: Nikola Mitkov - Carlos Sandoval Mercado | Sicilian Defense: Closed | |
| Apr 8, 2023 | Luis Fernando Ibarra Chami | 1–0 | Carlos Sandoval Mercado | Round 7: Luis Fernando Ibarra Chami - Carlos Sandoval Mercado | Sicilian Defense: Najdorf Variation, Adams Attack | |
| Apr 7, 2023 | Carlos Sandoval Mercado | ½–½ | Kevin Joel Cori Quispe | Round 6: Carlos Sandoval Mercado - Kevin Joel Cori Quispe | Nimzo-Indian Defense: Normal Variation, Botvinnik System | |
| Apr 7, 2023 | Jose Eduardo Martinez Alcantara | 1–0 | Carlos Sandoval Mercado | Round 5: Jose Eduardo Martinez Alcantara - Carlos Sandoval Mercado | Sicilian Defense: Closed | |
| Apr 7, 2023 | Juan Carlos Obregon Rivero | 0–1 | Carlos Sandoval Mercado | Round 4: Juan Carlos Obregon Rivero - Carlos Sandoval Mercado | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Apr 6, 2023 | Carlos Sandoval Mercado | 1–0 | Alexey Fernandez Cardoso | Round 3: Carlos Sandoval Mercado - Alexey Fernandez Cardoso | Modern Defense | |
| Mar 19, 2023 | Carlos Sandoval Mercado | 1–0 | Liam Putnam | Round 9: Carlos Sandoval Mercado - Liam Putnam | Indian Defense: Anti-Nimzo-Indian | |
| Mar 19, 2023 | Donald Johnson | ½–½ | Carlos Sandoval Mercado | Round 8: Donald Johnson - Carlos Sandoval Mercado | Sicilian Defense: Moscow Variation, Sokolsky Variation | |
| Mar 18, 2023 | Carlos Sandoval Mercado | 1–0 | Aiden Reiss | Round 7: Carlos Sandoval Mercado - Aiden Reiss | Grünfeld Defense: Botvinnik Variation | |
| Mar 18, 2023 | Liordis Quesada Vera | ½–½ | Carlos Sandoval Mercado | Round 6: Liordis Quesada Vera - Carlos Sandoval Mercado | Pirc Defense | |
| Mar 17, 2023 | Carlos Sandoval Mercado | 0–1 | Terry Luo | Round 5: Carlos Sandoval Mercado - Terry Luo | King's Indian Defense: Makogonov Variation | |
| Mar 17, 2023 | James Chirilov | 0–1 | Carlos Sandoval Mercado | Round 4: James Chirilov - Carlos Sandoval Mercado | Sicilian Defense: Najdorf Variation | |
| Mar 16, 2023 | Qindong Yang | 0–1 | Carlos Sandoval Mercado | Round 3: Qindong Yang - Carlos Sandoval Mercado | Bogo-Indian Defense: Retreat Variation | |
| Mar 16, 2023 | Carlos Sandoval Mercado | 0–1 | Roberto Martin Del Campo | Round 2: Donald Johnson - Liordis Quesada Vera | Benoni Defense: Old Benoni | |
| Mar 15, 2023 | Alonso Zapata | 0–1 | Carlos Sandoval Mercado | Round 1: Alonso Zapata - Carlos Sandoval Mercado | Sicilian Defense: Najdorf Variation, Opocensky Variation | |
| Feb 26, 2023 | Carlos Sandoval Mercado | * | Ryo Chen | Round 9: Carlos Sandoval Mercado - Ryo Chen | ? | |
| Feb 26, 2023 | Luka Budisavljevic | 1–0 | Carlos Sandoval Mercado | Round 8: Luka Budisavljevic - Carlos Sandoval Mercado | King's Indian Defense: Orthodox Variation | |
| Feb 25, 2023 | Carlos Sandoval Mercado | 0–1 | Joseph Levine | Round 7: Carlos Sandoval Mercado - Joseph Levine | Nimzo-Indian Defense: Normal Variation | |
| Feb 25, 2023 | Josiah Stearman | 1–0 | Carlos Sandoval Mercado | Round 6: Josiah Stearman - Carlos Sandoval Mercado | Sicilian Defense: Closed | |
| Feb 24, 2023 | Carlos Sandoval Mercado | * | Mikaelyan Arman | Round 5: Carlos Sandoval Mercado - Mikaelyan Arman | King's Indian Defense: Makogonov Variation | |
| Feb 24, 2023 | Mark Heimann | 1–0 | Carlos Sandoval Mercado | Round 4: Mark Heimann - Carlos Sandoval Mercado | Queen's Gambit Declined: Queen's Knight Variation | |
| Feb 24, 2023 | Robby Kevlishvili | 1–0 | Carlos Sandoval Mercado | Round 2: Robby Kevlishvili - Carlos Sandoval Mercado | Philidor Defense: Lion Variation | |
| Feb 24, 2023 | Carlos Sandoval Mercado | ½–½ | Sungho Yim | Round 3: Carlos Sandoval Mercado - Sungho Yim | Queen's Gambit Declined: Queen's Knight Variation | |
| Feb 24, 2023 | Carlos Sandoval Mercado | 1–0 | Robert Shlyakhtenko | Round 1: Carlos Sandoval Mercado - Robert Shlyakhtenko | Semi-Slav Defense | |
| Feb 20, 2023 | Nathan Yan | * | Carlos Sandoval Mercado | Round 7: Nathan Yan - Carlos Sandoval Mercado | Sicilian Defense: Najdorf Variation | |
| Feb 20, 2023 | Carlos Sandoval Mercado | 0–1 | Pranav Sathish | Round 6: Carlos Sandoval Mercado - Pranav Sathish | Slav Defense | |
| Feb 19, 2022 | Luis Ernesto Quesada Perez | 1–0 | Carlos Sandoval Mercado | Round 9: Luis Ernesto Quesada Perez - Carlos Sandoval Mercado | King's Indian Defense: Four Pawns Attack, Dynamic Attack | |
| Feb 19, 2022 | Paul Ivan Rosales Campos | ½–½ | Carlos Sandoval Mercado | Round 7: Paul Ivan Rosales Campos - Carlos Sandoval Mercado | Sicilian Defense: Sozin Attack, Flank Variation | |
| Feb 19, 2022 | Carlos Sandoval Mercado | 1–0 | Jorge Martin Del Campo Cardenas | Round 8: Carlos Sandoval Mercado - Jorge Martin Del Campo Cardenas | Catalan Opening: Open Defense, Classical Line | |
| Feb 17, 2022 | Carlos Sandoval Mercado | 0–1 | Emilio Cordova | Round 6: Carlos Sandoval Mercado - Emilio Cordova | Dutch Defense: Leningrad Variation, Warsaw Variation | |
| Feb 17, 2022 | Juan Carlos Obregon Rivero | 1–0 | Carlos Sandoval Mercado | Round 5: Juan Carlos Obregon Rivero - Carlos Sandoval Mercado | King's Indian Defense: Semi-Averbakh System | |
| Feb 17, 2022 | Carlos Sandoval Mercado | 1–0 | Luis Fernando Ibarra Chami | Round 4: Carlos Sandoval Mercado - Luis Fernando Ibarra Chami | King's Indian Defense: Normal Variation, King's Knight Variation | |
| Feb 17, 2022 | Pablo Antonio Fernandez Pozas | 0–1 | Carlos Sandoval Mercado | Round 3: Pablo Antonio Fernandez Pozas - Carlos Sandoval Mercado | King's Indian Defense: Makogonov Variation | |
| Feb 17, 2022 | Carlos Sandoval Mercado | ½–½ | Sandro Mareco | Round 2: Carlos Sandoval Mercado - Sandro Mareco | Catalan Opening: Open Defense, Classical Line | |
| Feb 17, 2022 | Leon Felipe Angeles Dorantes | 0–1 | Carlos Sandoval Mercado | Round 1: Leon Felipe Angeles Dorantes - Carlos Sandoval Mercado | Benko Gambit Accepted: King Walk Variation | |
| May 31, 2021 | Alexander Matros | ½–½ | Carlos Sandoval Mercado | Round 9: Alexander Matros - Carlos Sandoval Mercado | English Opening: Anglo-Indian Defense, Queen's Knight Variation | |
| May 31, 2021 | Carlos Sandoval Mercado | 0–1 | Robby Adamson | Round 8: Carlos Sandoval Mercado - Robby Adamson | Slav Defense: Modern Line | |
| May 30, 2021 | Nikolay Andrianov | ½–½ | Carlos Sandoval Mercado | Round 7: Nikolay Andrianov - Carlos Sandoval Mercado | Indian Defense: Przepiorka Variation | |
| May 30, 2021 | Carlos Sandoval Mercado | 0–1 | Dominique Myers | Round 6: Eddy Tian - Alexander Matros | Rapport-Jobava System | |
| May 29, 2021 | Doug Eckert | ½–½ | Carlos Sandoval Mercado | Round 5: Doug Eckert - Carlos Sandoval Mercado | King's Indian Defense: Orthodox Variation, Gligoric-Taimanov System | |
| May 29, 2021 | Carlos Sandoval Mercado | ½–½ | Vincent Tsay | Round 4: Carlos Sandoval Mercado - Vincent Tsay | Catalan Opening: Open Defense, Classical Line | |
| May 28, 2021 | Carlos Sandoval Mercado | 1–0 | Eddy Tian | Round 3: Carlos Sandoval Mercado - Eddy Tian | King's Indian Defense: Fianchetto Variation, Panno Variation | |
| May 28, 2021 | Roberto Martin del Campo | ½–½ | Carlos Sandoval Mercado | Round 2: Roberto Martin del Campo - Carlos Sandoval Mercado | Sicilian Defense: Delayed Alapin Variation | |
| May 27, 2021 | Carlos Sandoval Mercado | 1–0 | Matan Prilleltensky | Round 1: Carlos Sandoval Mercado - Matan Prilleltensky | Queen's Pawn Game: Chigorin Variation | |
| Dec 23, 2020 | Naman Kuman | * | Carlos Sandoval Mercado | North American Junior Championship - Round 9: Naman Kuman - Carlos Sandoval Mercado | Sicilian Defense: Najdorf Variation | |
| Dec 22, 2020 | Carlos Sandoval Mercado | 0–1 | Danial Asaria | North American Junior Championship - Round 8: Carlos Sandoval Mercado - Danial Asaria | Rapport-Jobava System | |
| Dec 22, 2020 | Anish Vivekananthan | 1–0 | Carlos Sandoval Mercado | North American Junior Championship - Round 7: Anish Vivekananthan - Carlos Sandoval Mercado | Sicilian Defense: Chekhover Variation | |
| Dec 21, 2020 | Carlos Sandoval Mercado | 1–0 | Angel Quiroga Jaquez | North American Junior Championship - Round 6: Carlos Sandoval Mercado - Angel Quiroga Jaquez | Rapport-Jobava System | |
| Dec 21, 2020 | Mitch Fishbein | 0–1 | Carlos Sandoval Mercado | North American Junior Championship - Round 5: Mitch Fishbein - Carlos Sandoval Mercado | King's Indian Defense: Orthodox Variation, Glek Defense | |
| Dec 20, 2020 | Carlos Sandoval Mercado | 0–1 | Derek Wu | North American Junior Championship - Round 4: Carlos Sandoval Mercado - Derek Wu | Catalan Opening: Open Defense, Classical Line | |
| Dec 20, 2020 | Ryo Chen | 0–1 | Carlos Sandoval Mercado | North American Junior Championship - Round 3: Ryo Chen - Carlos Sandoval Mercado | Sicilian Defense: Najdorf Variation, Opocensky Variation, Traditional Line | |
| Dec 19, 2020 | Carlos Sandoval Mercado | 1–0 | Juan Orellana | North American Junior Championship - Round 2: Carlos Sandoval Mercado - Juan Orellana | Queen's Gambit Accepted: Central Variation, McDonnell Defense | |
| Dec 19, 2020 | Donald Johnson | 0–1 | Carlos Sandoval Mercado | North American Junior Championship - Round 1: Donald Johnson - Carlos Sandoval Mercado | Sicilian Defense: Najdorf Variation, Adams Attack | |