| 26 jul 2026 | Marchand, Calix 2181 | Lesiege, Alexandre 2455 | ½-½ | B22 Defensa Siciliana: Alapin Variation | Quebec Open Championship (COQ) 2026 | 88 | Ver |
| 26 jun 2026 | Marchand, Calix 2127 | Platonovs, Nikolajs 2240 | 1-0 | B22 Defensa Siciliana: Alapin Variation | FIDE World Youth Chess Championships 2026 | O14 | 114 | Ver |
| 25 jun 2026 | Golis, Wiktor 2367 | Marchand, Calix 2127 | 0-1 | E46 Defensa Nimzoindia: Normal Variation | FIDE World Youth Chess Championships 2026 | O14 | 72 | Ver |
| 24 jun 2026 | Marchand, Calix 2127 | Torres Rebolledo, Alvaro 2322 | 1-0 | B22 Defensa Siciliana: Alapin Variation, Anti-Alapin Gambit | FIDE World Youth Chess Championships 2026 | O14 | 41 | Ver |
| 23 jun 2026 | Mamikonyan, Artem T 2210 | Marchand, Calix 2127 | 1-0 | B45 Defensa Siciliana: Four Knights Variation, Cobra Variation | FIDE World Youth Chess Championships 2026 | O14 | 49 | Ver |
| 22 jun 2026 | Marchand, Calix 2127 | Garakhanov, Shamsi 2295 | 1-0 | B22 Defensa Siciliana: Delayed Alapin Variation | FIDE World Youth Chess Championships 2026 | O14 | 34 | Ver |
| 20 jun 2026 | Negrean, Andrei 2366 | Marchand, Calix 2127 | 1-0 | B45 Defensa Siciliana: Four Knights Variation, Cobra Variation | FIDE World Youth Chess Championships 2026 | O14 | 52 | Ver |
| 19 jun 2026 | Marchand, Calix 2127 | Golubovic, Erik 2306 | 1-0 | B23 Defensa Siciliana: Closed, Carlsen Variation | FIDE World Youth Chess Championships 2026 | O14 | 45 | Ver |
| 16 jun 2026 | Guo, Ethan 2404 | Marchand, Calix 2127 | 1-0 | B45 Defensa Siciliana: Four Knights Variation, Exchange Variation | FIDE World Youth Chess Championships 2026 | O14 | 45 | Ver |
| 3 abr 2026 | Marchand, Calix 2074 | Olivier Kenta Chiku-Ratte 2331 | ½-½ | C47 Apertura de los Cuatro Caballos: Scotch Variation, Krause Gambit, Leonhardt Defense | Canadian Closed Championships 2026 | 81 | Ver |
| 16 feb 2026 | Marchand, Calix 2088 | Dhaliwal, Jaipreet Singh 2085 | 0-1 | B22 Defensa Siciliana: Delayed Alapin Variation | 2026 Hart House Reading Week Open | 64 | Ver |
| 14 feb 2026 | Zhang, Samuel 2140 | Marchand, Calix 2088 | 1-0 | B15 Defensa Caro-Kann: Tartakower Variation | 2026 Hart House Reading Week Open | 46 | Ver |
| 14 feb 2026 | Marchand, Calix 2088 | Plotkin, Mark 2370 | ½-½ | B06 Defensa Moderna: Two Knights Variation | 2026 Hart House Reading Week Open | 82 | Ver |
| 13 oct 2025 | Kalinin, Dzmitry 2154 | Marchand, Calix 2101 | 0-1 | E32 Defensa Nimzoindia: Classical Variation | 2025 Maritime Open Championship | 52 | Ver |
| 12 oct 2025 | Plotkin, Mark 2353 | Marchand, Calix 2101 | 1-0 | A17 Apertura Inglesa: Anglo-Indian Defense, Nimzo-English | 2025 Maritime Open Championship | 59 | Ver |
| 11 oct 2025 | Nakamura, Hikaru 2816 | Marchand, Calix 2101 | 1-0 | B22 Defensa Siciliana: Delayed Alapin Variation | 2025 Maritime Open Championship | 50 | Ver |