| 23 jun 2026 | Breyer, Thierry 2193 | Collin, Moritz Valentin 2357 | ½-½ | B44 Defensa Siciliana: Taimanov Variation | SUI-chT Wollishofen-Riehen | 73 | Ver |
| 23 may 2026 | Breyer, Thierry 2146 | Breyer, Philippe 2089 | 1-0 | B56 Defensa Siciliana: Classical Variation | Swiss Youth Championship 2026 U18 | 67 | Ver |
| 23 may 2026 | Rappazzo, Johannes 2216 | Breyer, Thierry 2146 | ½-½ | B12 Defensa Caro-Kann: Advance Variation, Botvinnik-Carls Defense | Swiss Youth Championship 2026 U18 | 52 | Ver |
| 23 may 2026 | Breyer, Thierry 2146 | Artan, Tamir 2087 | 1-0 | B53 Defensa Siciliana: Chekhover Variation | Swiss Youth Championship 2026 U18 | 22 | Ver |
| 23 may 2026 | Breyer, Thierry 2146 | Malli, Suvirr 2140 | ½-½ | B53 Defensa Siciliana: Chekhover Variation | Swiss Youth Championship 2026 U18 | 46 | Ver |
| 2 abr 2026 | Breyer, Thierry 2118 | Bauer, Christian 2562 | 0-1 | B00 Defensa Nimzowitsch: Kennedy Variation, Riemann Defense | Grenke Chess Festival 2026 Open | 34 | Ver |
| 23 mar 2026 | Gade, Niels Severin 2004 | Breyer, Thierry 2146 | 0-1 | B15 Defensa Caro-Kann: Tartakower Variation | Swiss Youth Championship 2026 U18 | 38 | Ver |
| 22 mar 2026 | Gontsul, Artem 2115 | Breyer, Thierry 2106 | 0-1 | B12 Defensa Caro-Kann: Advance Variation, Botvinnik-Carls Defense | Reti Amateur Open | 56 | Ver |