| May 18, 2026 | Cardarelli | 1–0 | Suarez | Round 6: Cardarelli, Leon - Suarez, Lucia | French Defense: Horwitz Attack | |
| May 18, 2026 | Rodriguez | 0–1 | Cardarelli | Round 5: Rodriguez, Lorenzo - Cardarelli, Leon | Nimzowitsch Defense: Declined Variation | |
| May 17, 2026 | Cardarelli | 1–0 | Lopez | Round 4: Cardarelli, Leon - Lopez, Santiago | Four Knights Game: Scotch Variation | |
| May 17, 2026 | de Oliveira | 1–0 | Cardarelli | Round 3: de Oliveira, Julian - Cardarelli, Leon | Dutch Defense: Queen's Knight Variation | |
| May 16, 2026 | Cardarelli | 1–0 | Rossi | Round 2: Cardarelli, Leon - Rossi, Benjamin | Three Knights Opening | |
| May 16, 2026 | Diaz | 0–1 | Cardarelli | Round 1: Diaz, Alan - Cardarelli, Leon | Nimzowitsch Defense: Pirc Connection | |
| Apr 26, 2026 | de Armas | 1–0 | Cardarelli | Round 6: de Armas, Yahir - Cardarelli, Leon | Nimzowitsch Defense: Declined Variation | |
| Apr 26, 2026 | Fabra | ½–½ | Cardarelli | Round 5: Fabra, Nahiara - Cardarelli, Leon | Nimzowitsch Defense: Declined Variation | |
| Apr 25, 2026 | Cardarelli | 1–0 | Vezoli | Round 3: Cardarelli, Leon - Vezoli, Maximo | Four Knights Game: Scotch Variation | |
| Apr 25, 2026 | Cammarota | 0–1 | Cardarelli | Round 2: Cammarota, Andres - Cardarelli, Leon | Nimzowitsch Defense: Scandinavian Variation, Advance Variation | |
| Apr 24, 2026 | Cardarelli | 1–0 | Reyna | Round 1: Cardarelli, Leon - Reyna, Emiliano | Pirc Defense | |
| Apr 23, 2026 | Cardarelli | 0–1 | Kulik | Round 4: Cardarelli, Leon - Kulik, Nicolas | Sicilian Defense: Delayed Alapin Variation | |
| Feb 17, 2026 | Cardarelli | ½–½ | Kulik | Round 8: Cardarelli, Leon - Kulik, Nicolas | Modern Defense | |
| Feb 16, 2026 | Garcia Martinez | 0–1 | Cardarelli | Round 7: Garcia Martinez, Alvaro - Cardarelli, Leon | Dutch Defense: Hopton Attack | |
| Feb 15, 2026 | Cayetano | 1–0 | Cardarelli | Round 5: Cayetano, Juan - Cardarelli, Leon | Nimzowitsch Defense: Scandinavian Variation, Advance Variation | |
| Feb 15, 2026 | Cardarelli | ½–½ | Saralegui | Round 4: Cardarelli, Leon - Saralegui, Mario | Four Knights Game: Scotch Variation, Belgrade Gambit | |
| Feb 14, 2026 | Muniz | 1–0 | Cardarelli | Round 3: Muniz, Rafael - Cardarelli, Leon | Van Geet Opening: Berlin Gambit | |
| Feb 14, 2026 | Cardarelli | 1–0 | Curi | Round 2: Cardarelli, Leon - Curi, Gabriel | French Defense: Knight Variation | |
| Jan 31, 2026 | Villegas | 1–0 | Cardarelli | Round 1: Villegas, Franco - Cardarelli, Leon | Nimzowitsch Defense: Declined Variation | |
| Jul 19, 2024 | Bores | 0–1 | Cardarelli | Round 1: Bores, Felix - Cardarelli, Leon | English Opening: Anglo-Indian Defense | |
| Jun 23, 2024 | Errazola | 1–0 | Cardarelli | Round 5: Errazola, Mauricio - Cardarelli, Leon | Zukertort Opening: Nimzo-Larsen Variation | |
| Jun 23, 2024 | Soto | 1–0 | Cardarelli | Round 6: Soto, Nicolas - Cardarelli, Leon | Pirc Defense | |
| Jun 21, 2024 | Soto | 1–0 | Cardarelli | Round 1: Soto, Nicolas - Cardarelli, Leon | Pirc Defense | |
| Apr 22, 2024 | Moreno Garcia | ½–½ | Cardarelli | Round 5: Moreno Garcia, David - Cardarelli, Leon | Pirc Defense: Classical Variation | |
| Apr 21, 2024 | Caballero | ½–½ | Cardarelli | Round 4: Caballero, Tabare - Cardarelli, Leon | Pirc Defense: Byrne Variation | |
| Apr 21, 2024 | Cardarelli | 1–0 | Quintela | Round 3: Cardarelli, Leon - Quintela, Sol | Philidor Defense | |
| Apr 20, 2024 | Cedres | 0–1 | Cardarelli | Round 2: Cedres, Diego - Cardarelli, Leon | Queen's Pawn Game: Symmetrical Variation | |
| Apr 20, 2024 | Cardarelli | 1–0 | Indart | Round 1: Cardarelli, Leon - Indart, Lucio | Sicilian Defense: Closed, Traditional | |
| Dec 8, 2024 | Cardarelli | 1–0 | Rosales Juarez | Round 9: Cardarelli, Leon - Rosales Juarez, Ricardo Sebastian | Italian Game: Scotch Gambit, Max Lange Attack | |
| Dec 7, 2024 | Vasquez Navez | 1–0 | Cardarelli | Round 7: Vasquez Navez, Mark Lenin - Cardarelli, Leon | Modern Defense: Standard Defense | |
| Dec 5, 2024 | Cardarelli | ½–½ | Delgado Caballero | Round 6: Cardarelli, Leon - Delgado Caballero, Nigel Alejandro | Italian Game: Scotch Gambit, Max Lange Attack | |
| Dec 5, 2024 | Rivarola Rotela | ½–½ | Cardarelli | Round 5: Rivarola Rotela, Alejandro Moises - Cardarelli, Leon | Modern Defense: Two Knights Variation | |
| Dec 4, 2024 | Cardarelli | 1–0 | Suzuki | Round 4: Cardarelli, Leon - Suzuki, Edgard Nascimento Souza | Sicilian Defense: Closed | |
| Dec 4, 2024 | Medina Castillo | 1–0 | Cardarelli | Round 3: Medina Castillo, Benjamin Ignacio - Cardarelli, Leon | Modern Defense: Two Knights Variation | |
| Dec 3, 2024 | Cardarelli | 1–0 | Klayvin Adrian Espinal Mejia | Round 2: Cardarelli, Leon - Klayvin Adrian Espinal Mejia | Scotch Game | |
| Dec 3, 2024 | Ortega Amaya | 1–0 | Cardarelli | Round 1: Ortega Amaya, Santiago Enmanuel - Cardarelli, Leon | Pirc Defense | |
| Feb 3, 2023 | Cardarelli | * | Espel | VI Abierto de Montevideo | ? | |
| Feb 13, 2022 | Cardarelli | 0–1 | Estoyanoff | V Abierto de Montevideo | Sicilian Defense: Closed, Traditional | |
| Aug 6, 2021 | Cardarelli | 1–0 | Leonel | World Youth Cup 2021 O12-G16 - Open 12 | King's Pawn Game | |
| Aug 6, 2021 | Cardarelli | 0–1 | Pham | World Youth Cup 2021 O12-G16 - Open 12 | Sicilian Defense: Closed, Traditional | |
| Aug 6, 2021 | Cardarelli | ½–½ | Ali | World Youth Cup 2021 O12-G16 - Open 12 | Sicilian Defense: Closed | |
| Aug 6, 2021 | Cardarelli | 0–1 | Liu | World Youth Cup 2021 O12-G16 - Open 12 | Italian Game: Classical Variation, Giuoco Pianissimo, with d6 | |
| Aug 6, 2021 | Cardarelli | 0–1 | Decraene | World Youth Cup 2021 O12-G16 - Open 12 | Sicilian Defense: Closed | |
| Aug 6, 2021 | Ioannou | 1–0 | Cardarelli | World Youth Cup 2021 O12-G16 - Open 12 | French Defense: Horwitz Attack, Papa-Ticulat Gambit | |
| Aug 6, 2021 | Sarkar | 1–0 | Cardarelli | World Youth Cup 2021 O12-G16 - Open 12 | English Opening: Carls-Bremen System | |
| Aug 6, 2021 | Smikle | 0–1 | Cardarelli | World Youth Cup 2021 O12-G16 - Open 12 | French Defense: Classical Variation, Steinitz Variation | |
| Aug 6, 2021 | Jiang | 0–1 | Cardarelli | World Youth Cup 2021 O12-G16 - Open 12 | Indian Defense: Anti-Nimzo-Indian | |
| Aug 6, 2021 | Lanzilotta | 1–0 | Cardarelli | World Youth Cup 2021 O12-G16 - Open 12 | French Defense: Exchange Variation | |
| — | Cardarelli | ½–½ | Beliman | Round 3: Cardarelli, Leon - Beliman, Alexandro | Sicilian Defense: Alapin Variation, Barmen Defense, Modern Line | |
| — | Cardarelli | 1–0 | Mercado Florez | Round 6: Cardarelli, Leon - Mercado Florez, Diego Armando | Philidor Defense: Exchange Variation | |
| — | Cardarelli | 1–0 | Ruiz Amaya | FIDE World Youth U16 Chess Olympiad 2025 | Italian Game: Giuoco Pianissimo, Italian Four Knights Variation | |
| — | Cardarelli | ½–½ | Castro Herrera | Round 7: Cardarelli, Leon - Castro Herrera, Juan Sebastian | Scandinavian Defense: Lasker Variation | |
| — | Cardarelli | 1–0 | Delgado Pena | Round 9: Cardarelli, Leon - Delgado Pena, Alvaro | Four Knights Game: Scotch Variation Accepted | |
| — | Rommel John Kyle Ventour | 0–1 | Cardarelli | Round 2: Rommel John Kyle Ventour - Cardarelli, Leon | Nimzowitsch Defense: Williams Variation | |
| — | Wilson | 1–0 | Cardarelli | Round 4: Wilson, Dion A - Cardarelli, Leon | Nimzowitsch Defense: Williams Variation | |
| — | Rodezno | 0–1 | Cardarelli | Round 5: Rodezno, Jeremy - Cardarelli, Leon | Nimzowitsch Defense: Williams Variation | |
| — | Madrigal Montagutt | 1–0 | Cardarelli | Round 8: Madrigal Montagutt, Anthony Steve - Cardarelli, Leon | Nimzowitsch Defense | |
