| Dec 3, 2025 | Vortmeier | ½–½ | Badacsonyi | Round 9: Vortmeier, Jan - Badacsonyi, Stanley | King's Indian Defense: Petrosian Variation, Stein Defense | |
| Dec 2, 2025 | Khachatouri | 0–1 | Vortmeier | Round 8: Khachatouri, Saro - Vortmeier, Jan | King's Indian Defense: Normal Variation | |
| Dec 1, 2025 | Vortmeier | ½–½ | Noy | Round 7: Vortmeier, Jan - Noy, Eyal | King's Indian Attack: Spassky Variation | |
| Nov 30, 2025 | Figeac | 0–1 | Vortmeier | Round 6: Figeac, Aurelien - Vortmeier, Jan | Four Knights Game: Spanish Variation, Classical Variation | |
| Nov 30, 2025 | Vortmeier | 0–1 | Vu Dinh | Round 5: Vortmeier, Jan - Vu Dinh, Adrien | King's Indian Attack: Symmetrical Defense | |
| Nov 29, 2025 | Vortmeier | 0–1 | Efroimski | Round 4: Vortmeier, Jan - Efroimski, Marsel | English Opening: Agincourt Defense, Neo-Catalan Declined | |
| Nov 28, 2025 | Sammed Jaykumar | 1–0 | Vortmeier | Round 3: Sammed Jaykumar, Shete - Vortmeier, Jan | Queen's Pawn Game: Barry Attack | |
| Nov 28, 2025 | Kalavannan | 0–1 | Vortmeier | Round 2: Kalavannan, Koby - Vortmeier, Jan | King's Indian Defense: Semi-Averbakh System | |
| Nov 27, 2025 | Vortmeier | 0–1 | Harvey | Round 1: Vortmeier, Jan - Harvey, Marcus R | Zukertort Opening: Queenside Fianchetto Variation | |
| Oct 5, 2025 | Eberle | ½–½ | Vortmeier | Deutsche Ländermeisterschaft 2025 | Ruy Lopez: Morphy Defense, Steinitz Deferred | |
| Oct 4, 2025 | Langer | 0–1 | Vortmeier | Deutsche Ländermeisterschaft 2025 | Queen's Pawn Game: Modern Defense | |
| Oct 3, 2025 | Sydykov | 1–0 | Vortmeier | Deutsche Ländermeisterschaft 2025 | Ruy Lopez: Morphy Defense, Steinitz Deferred | |
| Oct 2, 2025 | Sieber | 1–0 | Vortmeier | Deutsche Ländermeisterschaft 2025 | King's Indian Defense: Normal Variation, Rare Defenses | |
| Sep 29, 2025 | Vortmeier | 0–1 | Eilenberg | Deutsche Ländermeisterschaft 2025 | English Opening: Caro-Kann Defensive System | |
| Jul 30, 2025 | De Wit | ½–½ | Vortmeier | Round 9: De Wit, Evan - Vortmeier, Jan | King's Indian Defense: Makogonov Variation | |
| Jul 29, 2025 | Vortmeier | 1–0 | Van Kuijk | Round 8: Vortmeier, Jan - Van Kuijk, Vadim | King's Indian Attack: Double Fianchetto | |
| Jul 28, 2025 | Van Roon | 1–0 | Vortmeier | Round 7: Van Roon, Sjoerd - Vortmeier, Jan | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| Jul 27, 2025 | Vortmeier | 0–1 | Kurt | Round 6: Vortmeier, Jan - Kurt, Sascha | English Opening: Symmetrical Variation, Rubinstein Variation | |
| Jul 26, 2025 | Bruggink | ½–½ | Vortmeier | Round 5: Bruggink, Tycho - Vortmeier, Jan | King's Indian Attack | |
| Jul 25, 2025 | Vortmeier | 1–0 | Ten Dam | Round 4: Vortmeier, Jan - Ten Dam, Bram | King's Indian Attack: Symmetrical Defense | |
| Jul 24, 2025 | De Boer | 1–0 | Vortmeier | Round 3: De Boer, Eelke - Vortmeier, Jan | King's Indian Defense: Orthodox Variation, Gligoric-Taimanov System | |
| Jul 23, 2025 | Vortmeier | ½–½ | Ritzerveld | Round 2: Vortmeier, Jan - Ritzerveld, Noah | King's Indian Attack | |
| Jul 22, 2025 | Roebers | 0–1 | Vortmeier | Round 1: Roebers, Bregje - Vortmeier, Jan | Ruy Lopez: Morphy Defense, Steinitz Deferred | |
| Jun 13, 2025 | Vortmeier | 1–0 | Weber | ODJM A 2025 | King's Indian Attack: Symmetrical Defense | |
| Jun 12, 2025 | Winkler | 0–1 | Vortmeier | ODJM A 2025 | Four Knights Game: Spanish Variation, Classical Variation | |
| Jun 11, 2025 | Weidenhoefer | 1–0 | Vortmeier | ODJM A 2025 | Bishop's Opening: Vienna Hybrid, Spielmann Attack | |
| Jun 11, 2025 | Vortmeier | ½–½ | Koehler | ODJM A 2025 | English Opening: Agincourt Defense, Neo-Catalan Declined | |
| Jun 10, 2025 | Lutze | ½–½ | Vortmeier | ODJM A 2025 | King's Indian Defense: Petrosian Variation, Stein Defense | |
| Jun 9, 2025 | Vortmeier | 1–0 | Tulchynsky | ODJM A 2025 | King's Indian Defense: Fianchetto Variation, Classical Fianchetto | |
| Jun 8, 2025 | Astner | 0–1 | Vortmeier | ODJM A 2025 | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| Jun 8, 2025 | Vortmeier | 1–0 | Tiedemann | ODJM A 2025 | King's Indian Attack: Symmetrical Defense | |
| Jun 6, 2025 | Vortmeier | ½–½ | Kololli | ODJM A 2025 | English Opening: Agincourt Defense | |
| Aug 4, 2024 | Kovalskyy | 0–1 | Vortmeier | Round 9: Kovalskyy, Alicia - Vortmeier, Jan | King's Indian Defense: Normal Variation, Deferred Fianchetto | |
| Aug 4, 2024 | Neugirg | 1–0 | Vortmeier | Round 8: Neugirg, Mika - Vortmeier, Jan | King's Indian Attack: Symmetrical Defense | |
| Aug 3, 2024 | Vortmeier | * | Maenken | Round 7: Vortmeier, Jan - Maenken, Merlin | English Opening: Great Snake Variation | |
| Aug 3, 2024 | Lutze | ½–½ | Vortmeier | Round 6: Lutze, Max - Vortmeier, Jan | Zukertort Opening: Quiet System | |
| Aug 2, 2024 | Vortmeier | 1–0 | Wolfer | Round 5: Vortmeier, Jan - Wolfer, Noah | King's Indian Attack: Symmetrical Defense | |
| Aug 1, 2024 | Vortmeier | 1–0 | Goedde | Round 3: Vortmeier, Jan - Goedde, Patrick | English Opening: Anglo-Indian Defense | |
| Aug 1, 2024 | Atar | 0–1 | Vortmeier | Round 2: Atar, Efecan - Vortmeier, Jan | English Opening: Great Snake Variation | |
| Jul 31, 2024 | Vortmeier | 1–0 | Faerber | Round 1: Vortmeier, Jan - Faerber, Anatoli | King's Indian Defense: Fianchetto Variation, Debrecen Defense | |
| Jul 26, 2024 | Pijpers | 1–0 | Vortmeier | Round 4: Pijpers, Arthur - Vortmeier, Jan | Ruy Lopez: Morphy Defense, Steinitz Deferred | |
| Jun 22, 2024 | Sieciechowicz | 1–0 | Vortmeier | krakow a | King's Indian Defense: Semi-Averbakh System | |
| May 25, 2024 | Weidenhoefer | 1–0 | Vortmeier | DEM U18 2024 | Modern Defense: Pseudo-Austrian Attack | |
| May 24, 2024 | Vortmeier | ½–½ | Petrovskyi | DEM U18 2024 | English Opening: Agincourt Defense, Neo-Catalan Declined | |
| May 23, 2024 | Vortmeier | 1–0 | Hecht | DEM U18 2024 | King's Indian Attack: Double Fianchetto | |
| May 22, 2024 | Duong | 0–1 | Vortmeier | DEM U18 2024 | Ruy Lopez: Morphy Defense, Anderssen Variation | |
| May 22, 2024 | Sidletskyi | 1–0 | Vortmeier | DEM U18 2024 | Scotch Game: Scotch Gambit, Advance Variation | |
| May 21, 2024 | Vortmeier | ½–½ | Heinrich | DEM U18 2024 | King's Indian Attack | |
| May 20, 2024 | Fuhrmann | 0–1 | Vortmeier | DEM U18 2024 | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| May 19, 2024 | Vortmeier | 1–0 | Morczynski | DEM U18 2024 | King's Indian Attack: Symmetrical Defense | |
| May 19, 2024 | Haack | 1–0 | Vortmeier | DEM U18 2024 | King's Indian Defense: Fianchetto Variation, Yugoslav Variation, Rare Line | |
| Mar 31, 2024 | Schuricht | ½–½ | Vortmeier | Round 7: Schuricht, Emil Frederick - Vortmeier, Jan | English Opening: Symmetrical Variation, Mecking Variation | |
| Mar 31, 2024 | Vortmeier | 1–0 | Klinkhammer | Round 6: Vortmeier, Jan - Klinkhammer, Matthias | King's Indian Attack: Sicilian Variation | |
| Mar 30, 2024 | Vortmeier | 1–0 | Kraus | Round 4: Vortmeier, Jan - Kraus, Linus | Zukertort Opening | |
| Mar 29, 2024 | Pijpers | 1–0 | Vortmeier | Round 3: Pijpers, Arthur - Vortmeier, Jan | Ruy Lopez: Morphy Defense, Steinitz Deferred | |
| Mar 29, 2024 | Vortmeier | 1–0 | Aengenheister | Round 2: Vortmeier, Jan - Aengenheister, Dennis | Clemenz Opening | |
| Mar 28, 2024 | Hepting | 0–1 | Vortmeier | Round 1: Hepting, Frank - Vortmeier, Jan | Modern Defense | |
