| 9 ago 2026 | Peyrer, Konstantin 2492 | Heinrich, John 2398 | ½-½ | D45 Defensa Semieslava: Accelerated Meran Variation | Sparkassen Chess Trophy 2026 | Open A | 15 | Ver |
| 8 ago 2026 | Pavlovic, Milos 2400 | Peyrer, Konstantin 2492 | ½-½ | E54 Defensa Nimzoindia: Normal Variation, Gligoric System, Exchange Variation | Sparkassen Chess Trophy 2026 | Open A | 21 | Ver |
| 7 ago 2026 | Peyrer, Konstantin 2492 | Silva, Pedro Gil Ferreira Da 2351 | 1-0 | E04 Apertura Catalana: Open Defense | Sparkassen Chess Trophy 2026 | Open A | 76 | Ver |
| 2 ago 2026 | Peyrer, Konstantin 2496 | Panjer, Sidney 2313 | ½-½ | C42 Defensa Petrov: Millennium Attack | Sparkassen Chess Trophy 2026 | Open A | 29 | Ver |
| 1 ago 2026 | Nguyen, Thanh An 2163 | Peyrer, Konstantin 2496 | 0-1 | E40 Defensa Nimzoindia: Rubinstein System | Sparkassen Chess Trophy 2026 | Open A | 34 | Ver |
| 24 jul 2026 | Peyrer, Konstantin 2496 | Dordevic, Tom 2319 | 1-0 | B51 Defensa Siciliana: Moscow Variation | Dutch Open 2026 - Dutch Open | 35 | Ver |
| 23 jul 2026 | De Boer, Eelke 2406 | Peyrer, Konstantin 2496 | ½-½ | C92 Apertura Española (Ruy López): Closed, Flohr System | Dutch Open 2026 - Dutch Open | 14 | Ver |
| 22 jul 2026 | Peyrer, Konstantin 2496 | Han, Qixiang 2311 | 1-0 | A20 Apertura Inglesa: King's English Variation | Dutch Open 2026 - Dutch Open | 49 | Ver |
| 21 jul 2026 | Den Hartog, Marijn 2209 | Peyrer, Konstantin 2496 | 0-1 | A05 Ataque Indio de Rey: Symmetrical Defense | Dutch Open 2026 - Dutch Open | 48 | Ver |
| 15 may 2026 | Peyrer, Konstantin 2529 | Glek, Igor 2375 | 0-1 | C00 Defensa Francesa: King's Indian Attack | Grand Prix PlusCity | Open Austrian Championship | Blitz | 27 | Ver |
| 15 may 2026 | Peyrer, Konstantin 2529 | Malek, Jan 2404 | 0-1 | D45 Defensa Semieslava: Accelerated Meran Variation | Grand Prix PlusCity | Open Austrian Championship | Blitz | 43 | Ver |
| 15 may 2026 | Mohr, Georg 2363 | Peyrer, Konstantin 2529 | 0-1 | A46 Defensa India: Spielmann-Indian | Grand Prix PlusCity | Open Austrian Championship | Blitz | 39 | Ver |
| 15 may 2026 | Peyrer, Konstantin 2529 | Risteski, Emil 2259 | ½-½ | B30 Defensa Siciliana: Nyezhmetdinov-Rossolimo Attack | Grand Prix PlusCity | Open Austrian Championship | Blitz | 63 | Ver |
| 15 may 2026 | Peyrer, Konstantin 2529 | Postlmayer, Jakob 2341 | 0-1 | E49 Defensa Nimzoindia: Normal Variation, Botvinnik System | Grand Prix PlusCity | Open Austrian Championship | Blitz | 38 | Ver |
| 15 may 2026 | Santos Latasa, Jaime 2600 | Peyrer, Konstantin 2529 | 1-0 | A15 Apertura Inglesa: Anglo-Indian Defense, King's Knight Variation | Grand Prix PlusCity | Open Austrian Championship | Blitz | 42 | Ver |
| 15 may 2026 | Leitgeb, Julian 2257 | Peyrer, Konstantin 2529 | 0-1 | B32 Defensa Siciliana: Kalashnikov Variation | Grand Prix PlusCity | Open Austrian Championship | Blitz | 35 | Ver |
| 14 may 2026 | Korobov, Anton 2614 | Peyrer, Konstantin 2480 | 1-0 | B77 Defensa Siciliana: Dragon Variation, Yugoslav Attack, Main Line | Grand Prix PlusCity | Open Austrian Championship | Rapid | 59 | Ver |
| 11 may 2026 | Maghsoodloo, Parham 2666 | Peyrer, Konstantin 2480 | 1-0 | E53 Defensa Nimzoindia: Normal Variation, Gligoric System | Grand Prix PlusCity | Open Austrian Championship | Rapid | 39 | Ver |
| 26 abr 2026 | Delchev, Aleksander 2424 | Peyrer, Konstantin 2519 | ½-½ | B30 Defensa Siciliana: Nyezhmetdinov-Rossolimo Attack | German Bundesliga 2025/26 | 20 | Ver |
| 25 abr 2026 | Peyrer, Konstantin 2519 | Lindgren, Philip 2360 | 0-1 | A11 Apertura Réti: Anglo-Slav Variation, with g3 | German Bundesliga 2025/26 | 61 | Ver |