| 23 jul 2026 | Wagner, Hans 2132 | Lehmann, Michael 2073 | 1-0 | B33 Defensa Siciliana: Lasker-Pelikan Variation | German Chess Championship 2026 | Seniors 50+ | 45 | Ver |
| 22 jul 2026 | Lehmann, Michael 2073 | Willsch, Matthias 2185 | 0-1 | D32 Defensa Tarrasch: Schara Gambit | German Chess Championship 2026 | Seniors 50+ | 31 | Ver |
| 21 jul 2026 | Lehmann, Michael 2073 | Schwarz, Frank 2264 | 1-0 | D53 Gambito de Dama rehusado | German Chess Championship 2026 | Seniors 50+ | 39 | Ver |
| 20 jul 2026 | Mueller-Dehn, Christian, Dr. 2013 | Lehmann, Michael 2073 | ½-½ | A03 Apertura Bird: Dutch Variation | German Chess Championship 2026 | Seniors 50+ | 13 | Ver |