| Mar 31, 2026 | Gallas | ½–½ | Weidemann | Runde 9: Gallas, Noel - Weidemann, Jakob | Sicilian Defense: Closed, Traditional | |
| Mar 31, 2026 | Weidemann | ½–½ | Perske | Runde 8: Weidemann, Jakob - Perske, Paul | Italian Game: Giuoco Pianissimo, Normal | |
| Mar 30, 2026 | Poetsch | 1–0 | Weidemann | Runde 7: Poetsch, Hagen - Weidemann, Jakob | Sicilian Defense: O'Kelly Variation, Réti System | |
| Mar 30, 2026 | Weidemann | 1–0 | Kummerow | Runde 6: Weidemann, Jakob - Kummerow, Heiko | French Defense: Winawer Variation, Delayed Exchange Variation | |
| Mar 29, 2026 | Weidemann | ½–½ | Meessen | Runde 4: Weidemann, Jakob - Meessen, Max | Sicilian Defense: Moscow Variation, Main Line | |
| Mar 28, 2026 | Vlasov | 0–1 | Weidemann | Runde 3: Vlasov, Igor - Weidemann, Jakob | Catalan Opening: Open Defense, Classical Line | |
| Mar 28, 2026 | Weidemann | 1–0 | Akhmatovski | Runde 2: Weidemann, Jakob - Akhmatovski, Maxim | English Opening: Anglo-Indian Defense, King's Knight Variation | |
| Mar 27, 2026 | Spiric | ½–½ | Weidemann | Runde 1: Spiric, Igor - Weidemann, Jakob | English Opening: Anglo-Indian Defense, King's Knight Variation | |
| Dec 30, 2025 | Weidemann | 0–1 | Garner | DVM U20 2025 | Zukertort Opening | |
| Dec 29, 2025 | Gallasch | ½–½ | Weidemann | DVM U20 2025 | Trompowsky Attack: Raptor Variation | |
| Dec 29, 2025 | Weidemann | ½–½ | Lutze | DVM U20 2025 | Sicilian Defense: Moscow Variation, Main Line | |
| Dec 28, 2025 | Melestean | ½–½ | Weidemann | DVM U20 2025 | Queen's Gambit Declined: Semi-Tarrasch Defense | |
| Dec 28, 2025 | Weidemann | 1–0 | Cilo | DVM U20 2025 | Réti Opening: Anglo-Slav Variation, Gurevich System | |
| Dec 27, 2025 | Hrebenshchykova | ½–½ | Weidemann | DVM U20 2025 | Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation, Chelyabinsk Variation | |
| Dec 27, 2025 | Weidemann | 1–0 | Gold | DVM U20 2025 | English Opening: Anglo-Indian Defense, King's Knight Variation | |
| Nov 1, 2025 | Schroeder | ½–½ | Weidemann | Runde 7: Schroeder, Lennart - Weidemann, Jakob | Sicilian Defense: Dragon Variation, Yugoslav Attack, Modern Line | |
| Nov 1, 2025 | Weidemann | ½–½ | Parvanyan | Runde 6: Weidemann, Jakob - Parvanyan, Alfred | Philidor Defense: Lion Variation | |
| Nov 1, 2025 | Kaster | 0–1 | Weidemann | Runde 5: Kaster, Martin - Weidemann, Jakob | Queen's Pawn Game: Symmetrical Variation, Pseudo-Catalan | |
| Oct 31, 2025 | Weidemann | ½–½ | Aden | Runde 4: Weidemann, Jakob - Aden, Tammo | Caro-Kann Defense: Advance Variation, Tal Variation | |
| Oct 31, 2025 | Budzyn | 0–1 | Weidemann | Runde 3: Budzyn, Matthias - Weidemann, Jakob | Sicilian Defense: Old Sicilian | |
| Oct 30, 2025 | Weidemann | 1–0 | de Vries | Runde 2: Weidemann, Jakob - de Vries, Carsten | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | |
| Oct 30, 2025 | Tarasenko | 1–0 | Weidemann | Runde 1: Tarasenko, Nazar - Weidemann, Jakob | Indian Defense: Normal Variation | |
| Dec 30, 2024 | Baranyai-Molnar | 0–1 | Weidemann | DVM U20 2024 | ? | |
| Dec 29, 2024 | Weidemann | 1–0 | Uhlmann | DVM U20 2024 | Sicilian Defense: Paulsen-Basman Defense | |
| Dec 29, 2024 | Mimkes | ½–½ | Weidemann | DVM U20 2024 | Sicilian Defense: Four Knights Variation | |
| Dec 28, 2024 | Weidemann | ½–½ | Hommel | DVM U20 2024 | Sicilian Defense: Taimanov Variation, Bastrikov Variation | |
| Dec 28, 2024 | Hayen | 0–1 | Weidemann | DVM U20 2024 | Sicilian Defense: Four Knights Variation, Cobra Variation | |
| Dec 27, 2024 | Helmsdorf | 0–1 | Weidemann | DVM U20 2024 | Rapport-Jobava System | |
| Oct 19, 2024 | Michalczak | 1–0 | Weidemann | Round 9: Michalczak, Thomas - Weidemann, Jakob | Nimzo-Indian Defense: Classical Variation, Noa Variation | |
| Oct 18, 2024 | Weidemann | 1–0 | Riechenberg | Round 8: Weidemann, Jakob - Riechenberg, Sebastian | Sicilian Defense: Moscow Variation | |
| Oct 17, 2024 | Sickmann | 1–0 | Weidemann | Round 7: Sickmann, Lisa - Weidemann, Jakob | Sicilian Defense: Lasker-Pelikan Variation | |
| Oct 16, 2024 | Weidemann | ½–½ | Pitschka | Round 6: Weidemann, Jakob - Pitschka, Claus | Caro-Kann Defense: Advance Variation, Tal Variation | |
| Oct 15, 2024 | Reller | 0–1 | Weidemann | Round 5: Reller, Ole - Weidemann, Jakob | English Opening: Agincourt Defense, Catalan Defense Accepted | |
| Oct 14, 2024 | Weidemann | ½–½ | Raghav V | Round 4: Weidemann, Jakob - Raghav V | Italian Game: Giuoco Piano | |
| Oct 13, 2024 | Bartsch | 0–1 | Weidemann | Round 3: Bartsch, Rainer - Weidemann, Jakob | Rapport-Jobava System | |
| Oct 13, 2024 | Weidemann | 1–0 | Tarasenko | Round 2: Weidemann, Jakob - Tarasenko, Nazar | French Defense: Tarrasch Variation, Open System | |
| Oct 12, 2024 | Kolakovic | ½–½ | Weidemann | Round 1: Kolakovic, Klaudio - Weidemann, Jakob | Richter-Veresov Attack: Richter Variation | |
| Jul 29, 2024 | Weidemann | 1–0 | Bakija | Round 6: Weidemann, Jakob - Bakija, Alan | Philidor Defense: Lion Variation | |
| Jul 27, 2024 | Weidemann | 1–0 | Van Foreest | Round 5: Weidemann, Jakob - Van Foreest, Machteld | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| Jul 26, 2024 | Stillger | ½–½ | Weidemann | Round 4: Stillger, Bernhard - Weidemann, Jakob | English Opening: Anglo-Indian Defense, King's Knight Variation | |
| Jul 25, 2024 | Krylov | 0–1 | Weidemann | Round 3: Krylov, Philippe - Weidemann, Jakob | Nimzo-Indian Defense: Sämisch Variation | |
| Jul 24, 2024 | Weidemann | ½–½ | Zecha | Round 2: Weidemann, Jakob - Zecha, Oscar | Italian Game: Rosentreter Gambit | |
| Jul 23, 2024 | Hausrath | 1–0 | Weidemann | Round 1: Hausrath, Daniel - Weidemann, Jakob | Zukertort Opening | |
| Mar 28, 2024 | Livaic | 1–0 | Weidemann | Grenke Chess Open 2024 | Queen's Indian Defense: Miles Variation | |
| Nov 3, 2024 | Brandes | 0–1 | Weidemann | Round 7: Brandes, Stephan - Weidemann, Jakob | Sicilian Defense: Smith-Morra Gambit | |
| Nov 2, 2024 | Weidemann | 1–0 | Giel | Round 6: Weidemann, Jakob - Giel, Olaf | Sicilian Defense | |
| Nov 2, 2024 | Lau | 0–1 | Weidemann | Round 5: Lau, Udo - Weidemann, Jakob | Queen's Indian Defense: Kasparov Variation | |
| Nov 1, 2024 | Weidemann | 0–1 | Mix | Round 4: Weidemann, Jakob - Mix, Clemens | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Nov 1, 2024 | Hansch | ½–½ | Weidemann | Round 3: Hansch, Torsten - Weidemann, Jakob | Queen's Indian Defense: Fianchetto Variation, Check Variation, Intermezzo Line | |
| Oct 31, 2024 | Weidemann | ½–½ | Udelnov | Round 2: Weidemann, Jakob - Udelnov, Valentin | Italian Game: Classical Variation, Giuoco Pianissimo, with h6 | |
| Oct 31, 2024 | Bundan | 0–1 | Weidemann | Round 1: Bundan, Edward - Weidemann, Jakob | Sicilian Defense: Four Knights Variation | |
| Aug 1, 2024 | Beerdsen | ½–½ | Weidemann | Round 9: Beerdsen, Thomas - Weidemann, Jakob | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Jul 31, 2024 | Weidemann | 1–0 | Grooten | Round 8: Weidemann, Jakob - Grooten, Herman | Caro-Kann Defense: Advance Variation, Tal Variation | |
| Jul 30, 2024 | Slagboom | ½–½ | Weidemann | Round 7: Slagboom, Leandro - Weidemann, Jakob | Sicilian Defense: Classical Variation, Sozin Attack | |
| Jul 21, 2022 | Weidemann | * | Diduh | open | ? | |
| Jul 19, 2022 | Roebers | * | Weidemann | open | ? | |
| Jun 11, 2022 | Weidemann | 1–0 | Chen | DEM U18 2022 | Sicilian Defense: Najdorf Variation, Polugaevsky Variation | |
| Jun 10, 2022 | Zackrisson | 1–0 | Weidemann | DEM U18 2022 | Sicilian Defense: French Variation | |
| Jun 9, 2022 | Weidemann | 0–1 | Musiolik | DEM U18 2022 | French Defense: Tarrasch Variation, Morozevich Variation | |
| Jun 8, 2022 | Weidemann | 1–0 | Orf | DEM U18 2022 | Philidor Defense: Lion Variation | |
| Jun 8, 2022 | Dobrikov | ½–½ | Weidemann | DEM U18 2022 | Sicilian Defense: Dragon Variation, Yugoslav Attack, Panov Variation | |
| Jun 7, 2022 | Haack | ½–½ | Weidemann | DEM U18 2022 | Sicilian Defense: Dragon Variation, Yugoslav Attack | |
| Jun 6, 2022 | Weidemann | * | Dahl | DEM U18 2022 | Sicilian Defense: Najdorf Variation | |
| Jun 5, 2022 | Weidemann | ½–½ | Weishäutel | DEM U18 2022 | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| Jun 5, 2022 | Boder | * | Weidemann | DEM U18 2022 | English Opening: King's English Variation | |
| Jun 27, 2021 | Hassemeier | 1–0 | Weidemann | DVM U16 2020 | Nimzo-Indian Defense: Classical Variation, Noa Variation | |
| Jun 26, 2021 | Weidemann | 1–0 | Danninger | DVM U16 2020 | Sicilian Defense: Dragon Variation, Yugoslav Attack | |
| Jun 26, 2021 | Weidemann | 0–1 | Sulayev | DVM U16 2020 | Sicilian Defense: Kalashnikov Variation | |
| Jun 25, 2021 | Farokhi | 0–1 | Weidemann | DVM U16 2021 | Sicilian Defense: Delayed Alapin Variation, with d6 | |
| — | Weidemann | 0–1 | Ganguly | Round 2: Weidemann, Jakob - Ganguly, Surya Shekhar | Italian Game: Giuoco Pianissimo, Normal | |