| Jan 1, 2024 | Yakub Irkilmez | 1–0 | Jan Oltmanns | Round 21: Yakub Irkilmez - Jan Oltmanns | Queen's Pawn Game: Accelerated London System, Steinitz Countergambit | |
| Jan 1, 2024 | Jan Oltmanns | ½–½ | Sviatoslav Sunko | Round 20: Jan Oltmanns - Sviatoslav Sunko | Sicilian Defense: Najdorf Variation | |
| Jan 1, 2024 | Jan Oltmanns | 1–0 | Niklas Jäger | Round 19: Jan Oltmanns - Niklas Jäger | French Defense: Rubinstein Variation, Blackburne Defense | |
| Jan 1, 2024 | Manuel Günnigmann | 1–0 | Jan Oltmanns | Round 18: Manuel Günnigmann - Jan Oltmanns | Ruy Lopez: Open, Main Line | |
| Jan 1, 2024 | Fatih Baltic | 1–0 | Jan Oltmanns | Round 17: Fatih Baltic - Jan Oltmanns | King's Knight Opening: Konstantinopolsky | |
| Jan 1, 2024 | Jan Oltmanns | 1–0 | Julian-Frank Reuter | Round 16: Jan Oltmanns - Julian-Frank Reuter | Sicilian Defense: Najdorf Variation | |
| Jan 1, 2024 | Murtez Ondozi | 1–0 | Jan Oltmanns | Round 15: Murtez Ondozi - Jan Oltmanns | Queen's Gambit Declined: Vienna Variation, Quiet Variation | |
| Jan 1, 2024 | Jan Oltmanns | 1–0 | Fatmir Haskaj | Round 14: Jan Oltmanns - Fatmir Haskaj | French Defense: Tarrasch Variation, Pawn Center Variation | |
| Jan 1, 2024 | Jan Oltmanns | 1–0 | Edgard Zhuikov | Round 13: Jan Oltmanns - Edgard Zhuikov | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| Jan 1, 2024 | Ralph Blasek | 1–0 | Jan Oltmanns | Round 12: Ralph Blasek - Jan Oltmanns | Ponziani Opening: Jaenisch Counterattack | |
| Jan 1, 2024 | Mykola Korchynskyi | 1–0 | Jan Oltmanns | Round 11: Mykola Korchynskyi - Jan Oltmanns | Queen's Gambit Declined: Modern Variation | |
| Jan 1, 2024 | Jan Oltmanns | 1–0 | Emil Frederick Schuricht | Round 10: Jan Oltmanns - Emil Frederick Schuricht | Caro-Kann Defense: Tartakower Variation | |
| Jan 1, 2024 | Sidney Panjer | 1–0 | Jan Oltmanns | Round 9: Sidney Panjer - Jan Oltmanns | Catalan Opening: Open Defense, Modern Sharp Variation | |
| Jan 1, 2024 | Jan Oltmanns | 0–1 | Andrii Palchuk | Round 8: Jan Oltmanns - Andrii Palchuk | Caro-Kann Defense: Tartakower Variation | |
| Jan 1, 2024 | Ilja Schneider | 0–1 | Jan Oltmanns | Round 7: Ilja Schneider - Jan Oltmanns | Queen's Gambit Declined | |
| Jan 1, 2024 | Marc Richters | 0–1 | Jan Oltmanns | Round 6: Marc Richters - Jan Oltmanns | Scotch Game: Schmidt Variation | |
| Jan 1, 2024 | Jan Oltmanns | 1–0 | Pascal Berkle | Round 5: Jan Oltmanns - Pascal Berkle | Alekhine Defense: Modern Variation, Alburt Variation | |
| Jan 1, 2024 | Erik Sprungala | 0–1 | Jan Oltmanns | Round 4: Erik Sprungala - Jan Oltmanns | Queen's Gambit Declined: Three Knights, Vienna Variation | |
| Jan 1, 2024 | Jan Oltmanns | 0–1 | Alexander Bagrationi | Round 3: Jan Oltmanns - Alexander Bagrationi | Sicilian Defense: Accelerated Dragon, Maróczy Bind, Breyer Variation | |
| Jan 1, 2024 | Jan Oltmanns | 1–0 | Yaroslav Bilenko | Round 2: Jan Oltmanns - Yaroslav Bilenko | Sicilian Defense: Classical Variation | |
| Jan 1, 2024 | Cem Celik | 0–1 | Jan Oltmanns | Round 1: Cem Celik - Jan Oltmanns | King's Indian Attack | |
| Oct 5, 2023 | Jan Oltmanns | 0–1 | Emil Meyer | Runde 7: Jan Oltmanns - Emil Meyer | Caro-Kann Defense: Endgame Offer | |
| Oct 4, 2023 | Martin Molinaroli | ½–½ | Jan Oltmanns | Runde 6: Martin Molinaroli - Jan Oltmanns | Queen's Pawn Game: London System | |
| Oct 3, 2023 | Jan Oltmanns | 1–0 | Kenneth Grodotzki | Runde 5: Jan Oltmanns - Kenneth Grodotzki | French Defense: Tarrasch Variation, Open System | |
| Oct 2, 2023 | Ulrich | * | Jan Oltmanns | Runde 4: Ulrich, Dr. Gebhardt - Jan Oltmanns | Nimzo-Indian Defense: Classical Variation, Milner-Barry Variation | |
| Oct 1, 2023 | Jan Oltmanns | 0–1 | Oleg Korneev | Runde 3: Jan Oltmanns - Oleg Korneev | Sicilian Defense: Godiva Variation | |
| Oct 1, 2023 | Zachary Saine | 0–1 | Jan Oltmanns | Runde 2: Zachary Saine - Jan Oltmanns | Italian Game: Classical Variation, Giuoco Pianissimo | |
| Sep 30, 2023 | Jan Oltmanns | 1–0 | Harry Broeken | Runde 1: Jan Oltmanns - Harry Broeken | Sicilian Defense: Taimanov Variation, Bastrikov Variation, English Attack | |
