| 19 jul 2026 | Guyer, Marlon 2115 | Beerdsen, Thomas 2504 | 0-1 | B90 Defensa Siciliana: Najdorf Variation, English Attack, Anti-English | Swiss Individual Championships 2026 | Masters | 43 | Ver |
| 18 jul 2026 | Klings, Peter 2057 | Guyer, Marlon 2115 | 0-1 | D02 Apertura de Peón de Dama: Symmetrical Variation, Pseudo-Catalan | Swiss Individual Championships 2026 | Masters | 46 | Ver |
| 16 jul 2026 | Lou, Vincent 2205 | Guyer, Marlon 2115 | 1-0 | D58 Gambito de Dama rehusado: Tartakower Defense | Swiss Individual Championships 2026 | Masters | 45 | Ver |
| 14 jul 2026 | Schmelowszky, David 2004 | Guyer, Marlon 2115 | ½-½ | C47 Apertura de los Cuatro Caballos: Naroditsky Variation | Swiss Individual Championships 2026 | Masters | 32 | Ver |
| 12 jul 2026 | Schellenberg, Simon 2232 | Guyer, Marlon 2115 | 1-0 | C45 Apertura Escocesa: Classical Variation | Swiss Individual Championships 2026 | Masters | 57 | Ver |
| 17 may 2026 | Guyer, Marlon 2128 | Gemelli,Romain 2249 | ½-½ | C78 Apertura Española (Ruy López): Morphy Defense, Neo-Arkhangelsk Variation | Schweizer Bundesturnier 2026 | 55 | Ver |