| 20 ago 2026 | Koellner, Aaron Noah 2202 | Humer, Wolfgang 2051 | 0-1 | A46 Ataque Torre: Classical Defense, Nimzowitsch Variation | Oberbank Challenger Open 2026 | 41 | Ver |
| 18 ago 2026 | Koellner, Aaron Noah 2202 | Wu, Chenshan 2064 | 0-1 | A46 Defensa India: Knights Variation | Oberbank Challenger Open 2026 | 78 | Ver |
| 16 ago 2026 | Koellner, Aaron Noah 2202 | Szvetits, Rene 2032 | 0-1 | A45 Ataque Trompowsky | Oberbank Challenger Open 2026 | 30 | Ver |
| 7 jun 2026 | Koellner, Aaron Noah 2204 | Kanyamarala, Tarun 2426 | 0-1 | D04 Apertura de Peón de Dama: Colle System, Anti-Colle | 16. Rheinland-Pfalz Open | 44 | Ver |
| 5 jun 2026 | Majumdar, Rajit 2019 | Koellner, Aaron Noah 2204 | ½-½ | D07 Gambito de Dama rehusado: Chigorin Defense, Main Line | 16. Rheinland-Pfalz Open | 56 | Ver |
| 25 may 2026 | Koellner, Aaron Noah 2213 | Poetsch, Hagen 2466 | ½-½ | A45 Defensa India | Runde 7: Koellner, Aaron Noah - Poetsch, Hagen | 46 | Ver |
| 5 abr 2026 | Barria, Jose 2373 | Koellner, Aaron Noah 2233 | 1-0 | B67 Defensa Siciliana: Richter-Rauzer Variation, Neo-Modern Variation | Grenke Chess Festival 2026 Open | 58 | Ver |
| 4 abr 2026 | Koellner, Aaron Noah 2233 | Papasimakopoulos, Alexandros 2352 | ½-½ | A41 Apertura de Peón de Dama | Grenke Chess Festival 2026 Open | 65 | Ver |
| 17 feb 2026 | Koellner, Aaron Noah 2199 | Poetsch, Hagen 2433 | 0-1 | A47 Pseudo Queen's Indian Defense | 5. Int. Baden-Badener Faschingsopen | 79 | Ver |
| 17 feb 2026 | Kurt, Sascha 2275 | Koellner, Aaron Noah 2199 | ½-½ | B67 Defensa Siciliana: Richter-Rauzer Variation, Neo-Modern Variation | 5. Int. Baden-Badener Faschingsopen | 33 | Ver |
| 16 feb 2026 | Haugner, Jan 2115 | Koellner, Aaron Noah 2199 | 0-1 | B24 Defensa Siciliana: Closed | 5. Int. Baden-Badener Faschingsopen | 34 | Ver |
| 15 feb 2026 | Koellner, Aaron Noah 2199 | Schlosser, Philipp 2459 | 0-1 | D04 Apertura de Peón de Dama: Colle System, Anti-Colle | 5. Int. Baden-Badener Faschingsopen | 39 | Ver |
| 15 feb 2026 | Eberhart, Erik 2044 | Koellner, Aaron Noah 2199 | 0-1 | B20 Defensa Siciliana: Staunton-Cochrane Variation | 5. Int. Baden-Badener Faschingsopen | 101 | Ver |