| 10 jun 2026 | Fier, Alexandr 2553 | Mareco, Sandro 2546 | ½-½ | C48 Apertura de los Cuatro Caballos: Spanish Variation | XIX American Continental Chess Championship 2026 | Standard | 9 | Ver |
| 8 jun 2026 | Mareco, Sandro 2546 | Jimenez Garcia, Emmanuel 2349 | 1-0 | E00 Apertura Catalana | XIX American Continental Chess Championship 2026 | Standard | 50 | Ver |
| 7 jun 2026 | Diaz Perez, Michel Alejandro 2425 | Mareco, Sandro 2546 | 0-1 | D45 Defensa Semieslava: Normal Variation | XIX American Continental Chess Championship 2026 | Standard | 85 | Ver |
| 6 jun 2026 | Mareco, Sandro 2546 | Berdayes Ason, Dylan Isidro 2460 | ½-½ | D38 Gambito de Dama rehusado: Ragozin Defense | XIX American Continental Chess Championship 2026 | Standard | 25 | Ver |
| 5 jun 2026 | Lopez Rayo, Santiago 2418 | Mareco, Sandro 2546 | ½-½ | C84 Apertura Española (Ruy López): Closed, Martinez Variation | XIX American Continental Chess Championship 2026 | Standard | 48 | Ver |
| 5 jun 2026 | Mareco, Sandro 2546 | Delgado Romero, Marco 2373 | 1-0 | A70 Defensa Benoni: Classical Variation, New York Variation | XIX American Continental Chess Championship 2026 | Standard | 42 | Ver |
| 4 jun 2026 | Baules Rodriguez, Jorge Luis 2283 | Mareco, Sandro 2546 | 0-1 | E11 Defensa Bogoindia: Wade-Smyslov Variation | XIX American Continental Chess Championship 2026 | Standard | 58 | Ver |
| 4 jun 2026 | Mareco, Sandro 2546 | Rios Gomez, Cristhian Camilo 2405 | 0-1 | B47 Defensa Siciliana: Taimanov Variation, Bastrikov Variation | XIX American Continental Chess Championship 2026 | Standard | 58 | Ver |
| 4 jun 2026 | Mareco, Sandro 2546 | Monroy Lopez, Gustavo Adolfo 2062 | 1-0 | B31 Defensa Siciliana: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | XIX American Continental Chess Championship 2026 | Standard | 30 | Ver |
| 3 jun 2026 | Torres Rosas, Luis Carlos 2312 | Mareco, Sandro 2546 | 0-1 | E94 Defensa India de Rey: Orthodox Variation | XIX American Continental Chess Championship 2026 | Standard | 56 | Ver |
| 2 jun 2026 | Mareco, Sandro 2546 | Shankland, Sam 2647 | ½-½ | C54 Apertura Italiana: Classical Variation, Giuoco Pianissimo | XIX American Continental Chess Championship 2026 | Standard | 37 | Ver |
| 15 dic 2025 | Slipak, Sergio 2374 | Mareco, Sandro 2555 | 0-1 | D43 Defensa Semieslava | Magistral Szmetan-Giardelli | Magistral Szmetan-Giardelli | 48 | Ver |
| 14 dic 2025 | Mareco, Sandro 2555 | Shirov, Alexei 2610 | ½-½ | E04 Apertura Catalana: Open Defense | Magistral Szmetan-Giardelli | Magistral Szmetan-Giardelli | 28 | Ver |
| 13 dic 2025 | Oro, Faustino 2503 | Mareco, Sandro 2555 | ½-½ | C88 Apertura Española (Ruy López): Closed, Anti-Marshall | Magistral Szmetan-Giardelli | Magistral Szmetan-Giardelli | 20 | Ver |
| 13 dic 2025 | Flores, Diego 2582 | Mareco, Sandro 2527 | 0-1 | A14 Apertura Inglesa: Agincourt Defense, Neo-Catalan Declined | Magistral Szmetan-Giardelli | Blitz | 45 | Ver |
| 13 dic 2025 | Shirov, Alexei 2579 | Mareco, Sandro 2527 | ½-½ | C92 Apertura Española (Ruy López): Closed, Flohr System | Magistral Szmetan-Giardelli | Blitz | 14 | Ver |
| 13 dic 2025 | Mareco, Sandro 2527 | Granda Zuniga, Julio E 2624 | 1-0 | C55 Apertura Italiana: Two Knights Defense, Modern Bishop's Opening | Magistral Szmetan-Giardelli | Blitz | 36 | Ver |
| 13 dic 2025 | Silva, Luca 2242 | Mareco, Sandro 2527 | 1-0 | E16 Defensa India de Dama: Capablanca Variation | Magistral Szmetan-Giardelli | Blitz | 56 | Ver |
| 13 dic 2025 | Mareco, Sandro 2527 | Tempone, Marcelo 2388 | 1-0 | C42 Defensa Petrov | Magistral Szmetan-Giardelli | Blitz | 40 | Ver |
| 13 dic 2025 | Carcamo, Matias 2314 | Mareco, Sandro 2527 | 0-1 | B25 Defensa Siciliana: Closed | Magistral Szmetan-Giardelli | Blitz | 64 | Ver |