| Jul 24, 2026 | Lehmann | 1–0 | Thelen | Round 8: Lehmann, Michael - Thelen, Armin | Trompowsky Attack: Classical Defense | |
| Jul 23, 2026 | Wagner | 1–0 | Lehmann | Round 7: Wagner, Hans - Lehmann, Michael | Sicilian Defense: Lasker-Pelikan Variation | |
| Jul 22, 2026 | Lehmann | 0–1 | Willsch | Round 6: Lehmann, Michael - Willsch, Matthias | Tarrasch Defense: Schara Gambit | |
| Jul 21, 2026 | Lehmann | 1–0 | Schwarz | Round 5: Lehmann, Michael - Schwarz, Frank | Queen's Gambit Declined | |
| Jul 20, 2026 | Mueller-Dehn | ½–½ | Lehmann | Round 4: Mueller-Dehn, Christian, Dr. - Lehmann, Michael | Bird Opening: Dutch Variation | |
| Jul 19, 2026 | Lehmann | 1–0 | Oezen | Round 3: Lehmann, Michael - Oezen, Alf | Indian Defense: Wade-Tartakower Defense | |
| Jul 18, 2026 | Belke | * | Lehmann | Round 2: Belke, Frank, Dr. - Lehmann, Michael | Dutch Defense: Hopton Attack | |
| Nov 22, 2024 | Lehmann | 0–1 | Pinhammer | Round 2: Lehmann, Michael - Pinhammer, Frank | Queen's Gambit Declined: Albin Countergambit | |
| Nov 24, 2024 | Reiter | 1–0 | Lehmann | Round 5: Reiter, Brigitte - Lehmann, Michael | Queen's Pawn Game: Zukertort Variation | |
| Aug 3, 2024 | Lehmann | 1–0 | Bauch | Round 5: Lehmann, Michael - Bauch, Martin | Slav Defense: Quiet Variation, Schallopp Defense | |
| Aug 2, 2024 | Ferneding | 1–0 | Lehmann | Round 3: Ferneding, Conrad - Lehmann, Michael | Caro-Kann Defense: Advance Variation, Tal Variation | |
| Aug 1, 2024 | Lehmann | ½–½ | Dolidze | Round 2: Lehmann, Michael - Dolidze, David | King's Indian Defense: Normal Variation, King's Knight Variation | |