| 16 ago 2026 | Zienkiewicz, Jan 2318 | Laignel, Quentin 2300 | 1-0 | B10 Defensa Caro-Kann: Endgame Variation | French Chess Championship 2026 | Accession | 69 | Ver |
| 15 ago 2026 | Zienkiewicz, Jan 2318 | Tulliez, Andre 2267 | 1-0 | B23 Defensa Siciliana: Closed | French Chess Championship 2026 | Accession | 83 | Ver |
| 14 ago 2026 | Philippe, Guillaume 2337 | Zienkiewicz, Jan 2318 | 1-0 | A03 Apertura Bird: Dutch Variation | French Chess Championship 2026 | Accession | 47 | Ver |
| 13 ago 2026 | Zienkiewicz, Jan 2318 | Bedhouche, Rayan 2138 | 1-0 | A16 Apertura Inglesa: Anglo-Indian Defense, Queen's Knight Variation | French Chess Championship 2026 | Accession | 41 | Ver |
| 10 ago 2026 | Ternault, Mathieu 2281 | Zienkiewicz, Jan 2318 | 0-1 | A01 Ataque Nimzo-Larsen: Modern Variation | French Chess Championship 2026 | Accession | 35 | Ver |
| 7 ago 2026 | Ouchichi, Ilies 2122 | Zienkiewicz, Jan 2318 | 1-0 | B30 Defensa Siciliana: Nyezhmetdinov-Rossolimo Attack | French Chess Championship 2026 | Accession | 63 | Ver |
| 7 ago 2026 | Zienkiewicz, Jan 2318 | Fantinel, Thibault 2372 | 1-0 | C11 Defensa Francesa: Classical Variation, Shirov-Anand Variation | French Chess Championship 2026 | Accession | 29 | Ver |
| 9 may 2026 | Zienkiewicz, Jan 2406 | Donchenko, Alexander 2573 | 0-1 | B12 Defensa Caro-Kann: Advance Variation, Van der Wiel Attack | Luc Winants Memorial Rapid Chess Tournament 2026 | 32 | Ver |
| 26 abr 2026 | Breuil, Tristan 2324 | Zienkiewicz, Jan 2279 | 0-1 | B33 Defensa Siciliana: Lasker-Pelikan Variation, Sveshnikov Variation | French Youth Chess Championships 2026 | O18 | 70 | Ver |
| 15 abr 2026 | Zienkiewicz, Jan 2279 | Vallee, Louis 2388 | ½-½ | B01 Defensa Escandinava: Gubinsky-Melts Defense | French Youth Chess Championships 2026 | O18 | 58 | Ver |
| 6 abr 2026 | Miller, Eduard 2363 | Zienkiewicz, Jan 2279 | 0-1 | A01 Ataque Nimzo-Larsen: Modern Variation | Grenke Chess Festival 2026 Open | 40 | Ver |
| 5 abr 2026 | Juhasz, Agoston 2427 | Zienkiewicz, Jan 2279 | 1-0 | B30 Defensa Siciliana: Nyezhmetdinov-Rossolimo Attack | Grenke Chess Festival 2026 Open | 38 | Ver |
| 5 abr 2026 | Zienkiewicz, Jan 2279 | Schlosser, Philipp 2474 | 1-0 | C77 Apertura Española (Ruy López): Morphy Defense, Tarrasch Variation | Grenke Chess Festival 2026 Open | 63 | Ver |
| 4 abr 2026 | Rozen, Eytan 2504 | Zienkiewicz, Jan 2279 | ½-½ | B56 Defensa Siciliana: Classical Variation, Fianchetto Variation | Grenke Chess Festival 2026 Open | 76 | Ver |
| 8 mar 2026 | Zienkiewicz, Jan 2406 | Bourg, Nicolas 2152 | 1-0 | C54 Apertura Italiana: Classical Variation, Giuoco Pianissimo | Rapide Festival Nancy 2026 | 50 | Ver |
| 8 mar 2026 | Paternoster, Thibaud 2080 | Zienkiewicz, Jan 2406 | 0-1 | B33 Defensa Siciliana: Open | Rapide Festival Nancy 2026 | 24 | Ver |
| 8 mar 2026 | Zienkiewicz, Jan 2406 | Berend, Elvira 2253 | ½-½ | B36 Defensa Siciliana: Accelerated Dragon, Maróczy Bind | Rapide Festival Nancy 2026 | 67 | Ver |
| 8 mar 2026 | Vatter, Hans-Joachim 2135 | Zienkiewicz, Jan 2406 | 1-0 | B06 Defensa Moderna: Standard Line | Rapide Festival Nancy 2026 | 87 | Ver |
| 8 mar 2026 | Zienkiewicz, Jan 2406 | Joly, Laurent 2005 | 1-0 | B31 Defensa Siciliana: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | Rapide Festival Nancy 2026 | 60 | Ver |
| 7 mar 2026 | Zienkiewicz, Jan 2235 | Fuchs, Heinz 2270 | 1-0 | B40 Defensa Siciliana: French Variation | Blitz Festival Nancy 2026 | 18 | Ver |