| Jan 4, 2026 | Lehmann | 0–1 | Schneider | 36. Staufer Open 2026 A | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Dec 7, 2024 | Lehmann | 0–1 | Boettcher | Round 1: Lehmann, Holger - Boettcher, Christian, Dr. | English Opening: Symmetrical Variation, Botvinnik System Reversed, with Nf3 | |
| Dec 7, 2024 | Lehmann | 0–1 | Stotyn | Round 3: Lehmann, Holger - Stotyn, Fabian | Queen's Gambit Declined: Austrian Defense | |
| Dec 7, 2024 | Lehmann | ½–½ | Hampel | Round 5: Lehmann, Holger - Hampel, Felix | King's Indian Defense: Makogonov Variation | |
| Dec 7, 2024 | Lehmann | 1–0 | Weisser | Round 7: Lehmann, Holger - Weisser, Andreas | Indian Defense: Normal Variation | |
| Dec 7, 2024 | Lehmann | ½–½ | Schmitt | Round 9: Lehmann, Holger - Schmitt, Dirk | Slav Defense: Exchange Variation | |
| Dec 7, 2024 | Lehmann | ½–½ | Koehne | Round 11: Lehmann, Holger - Koehne, Arno | Slav Defense: Exchange Variation | |
| Dec 7, 2024 | Lehmann | 0–1 | Ewert | Round 13: Lehmann, Holger - Ewert, Hannes | Nimzo-Indian Defense: Sämisch Variation | |
| Dec 7, 2024 | Lehmann | 0–1 | Tonndorf | Round 14: Lehmann, Holger - Tonndorf, Matthias | Nimzo-Indian Defense: Sämisch Variation | |
| Dec 7, 2024 | Lehmann | 0–1 | Buchenau | Round 16: Lehmann, Holger - Buchenau, Frank | Nimzo-Indian Defense: Sämisch Variation | |
| Dec 7, 2024 | Lehmann | 1–0 | Drygala | Round 18: Lehmann, Holger - Drygala, Lars | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Dec 7, 2024 | Lehmann | 1–0 | Muendoerfer | Round 20: Lehmann, Holger - Muendoerfer, Sebastian | Queen's Gambit Declined: Exchange Variation | |
| Dec 7, 2024 | Lehmann | 0–1 | Weber | Round 22: Lehmann, Holger - Weber, Dirk | Benko Gambit | |
| Dec 7, 2024 | Wetterau | 1–0 | Lehmann | Round 2: Wetterau, Nathanael - Lehmann, Holger | Sicilian Defense: Portsmouth Gambit | |
| Dec 7, 2024 | Schoengart | 0–1 | Lehmann | Round 4: Schoengart, Ralf - Lehmann, Holger | Benoni Defense: Old Benoni | |
| Dec 7, 2024 | Tarasenko | 0–1 | Lehmann | Round 6: Tarasenko, Nazar - Lehmann, Holger | Benoni Defense: Semi-Benoni | |
| Dec 7, 2024 | Zehe | 1–0 | Lehmann | Round 8: Zehe, Marc-Kevin - Lehmann, Holger | Van Geet Opening: Sicilian Two Knights | |
| Dec 7, 2024 | Voege | 1–0 | Lehmann | Round 10: Voege, Tobias - Lehmann, Holger | English Opening: King's English Variation, Reversed Closed Sicilian | |
| Dec 7, 2024 | Hagemann | 0–1 | Lehmann | Round 12: Hagemann, Sven - Lehmann, Holger | Sicilian Defense: Closed | |
| Dec 7, 2024 | Schulze | 1–0 | Lehmann | Round 15: Schulze, Torben, Dr. - Lehmann, Holger | Sicilian Defense: Closed | |
| Dec 7, 2024 | Sauer | 0–1 | Lehmann | Round 17: Sauer, Tim - Lehmann, Holger | Benoni Defense: Semi-Benoni | |
| Dec 7, 2024 | Happe | 0–1 | Lehmann | Round 19: Happe, Reinhold - Lehmann, Holger | Benoni Defense: Old Benoni | |
| Dec 7, 2024 | Koelling | 0–1 | Lehmann | Round 21: Koelling, Jonah - Lehmann, Holger | Sicilian Defense: Smith-Morra Gambit Accepted, Pin Defense | |
| Dec 7, 2024 | Mittelstaedt | 1–0 | Lehmann | Round 23: Mittelstaedt, Hendrik - Lehmann, Holger | Benoni Defense: Old Benoni | |
