| May 17, 2026 | Iturrizaga Bonelli | 1–0 | Leisch | Round 8: Iturrizaga Bonelli, Eduardo - Leisch, Lukas | English Opening: Agincourt Defense, Neo-Catalan Declined | |
| May 17, 2026 | Leisch | 0–1 | Samunenkov | Round 6: Leisch, Lukas - Samunenkov, Ihor | Nimzo-Indian Defense: Rubinstein System, Rubinstein Variation | |
| May 17, 2026 | Martinez Alcantara | 1–0 | Leisch | Round 3: Martinez Alcantara, Jose Eduardo - Leisch, Lukas | Sicilian Defense: Delayed Alapin Variation, with d6 | |
| May 17, 2026 | Leisch | * | Charaus | Round 2: Leisch, Lukas - Charaus, Florian | ? | |
| May 16, 2026 | Leisch | 0–1 | Santos Latasa | Round 10: Leisch, Lukas - Santos Latasa, Jaime | Queen's Gambit Declined: Cambridge Springs Defense, Rubinstein Variation | |
| May 16, 2026 | Perunovic | 1–0 | Leisch | Round 9: Perunovic, Milos - Leisch, Lukas | Sicilian Defense: Richter-Rauzer Variation, Vitolins Variation | |
| May 16, 2026 | Bok | 1–0 | Leisch | Round 5: Bok, Benjamin - Leisch, Lukas | Queen's Gambit Declined: Queen's Knight Variation | |
| May 16, 2026 | Rodshtein | 1–0 | Leisch | Round 3: Rodshtein, Maxim - Leisch, Lukas | Queen's Gambit Declined: Queen's Knight Variation | |
| May 15, 2026 | Shimanov | 1–0 | Leisch | Round 3: Shimanov, Aleksandr - Leisch, Lukas | Queen's Gambit Declined: Queen's Knight Variation | |
| May 14, 2026 | Leisch | 0–1 | Travadon | Round 5: Leisch, Lukas - Travadon, Loic | Queen's Gambit Declined | |
| Apr 6, 2026 | Ten Hertog | ½–½ | Leisch | Round 9: Ten Hertog, Hugo - Leisch, Lukas | ? | |
| Apr 6, 2026 | Leisch | 1–0 | Movsesian | Round 8: Leisch, Lukas - Movsesian, Julia | ? | |
| Apr 5, 2026 | Schoppen | 1–0 | Leisch | Round 7: Schoppen, Casper - Leisch, Lukas | ? | |
| Apr 5, 2026 | Leisch | 0–1 | Kivisto | Round 6: Leisch, Lukas - Kivisto, Mikko | ? | |
| Apr 4, 2026 | Becker | 0–1 | Leisch | Round 5: Becker, Tobias - Leisch, Lukas | ? | |
| Apr 4, 2026 | Leisch | 0–1 | Van Wely | Round 4: Leisch, Lukas - Van Wely, Loek | ? | |
| Apr 3, 2026 | Escudero Ribo | 0–1 | Leisch | Round 3: Escudero Ribo, Eloi - Leisch, Lukas | ? | |
| Apr 3, 2026 | Leisch | 0–1 | Maghsoodloo | Round 2: Leisch, Lukas - Maghsoodloo, Parham | ? | |
| Apr 21, 2025 | Leisch | 0–1 | Boev | Freestyle Chess Open A | ? | |
| Apr 21, 2025 | Erdogmus | 1–0 | Leisch | Freestyle Chess Open A | ? | |
| Apr 20, 2025 | Leisch | 1–0 | Jahncke | Freestyle Chess Open A | ? | |
| Apr 20, 2025 | Kamsky | 1–0 | Leisch | Freestyle Chess Open A | ? | |
| Apr 19, 2025 | Leisch | 1–0 | Heron | Freestyle Chess Open A | ? | |
| Apr 19, 2025 | Schinkowski | 0–1 | Leisch | Freestyle Chess Open A | ? | |
| Apr 18, 2025 | Leisch | 0–1 | Keymer | Round 3: Leisch, Lukas - Keymer, Vincent | ? | |
| Apr 18, 2025 | Duson | 0–1 | Leisch | Round 2: Duson, Robin - Leisch, Lukas | ? | |
| Apr 6, 2025 | Leisch | ½–½ | Mihok | Round 11: Leisch, Lukas - Mihok, Oliver | King's Indian Defense: Orthodox Variation, Positional Defense | |
| Apr 5, 2025 | Csonka | ½–½ | Leisch | Round 10: Csonka, Balazs - Leisch, Lukas | Slav Defense: Quiet Variation, Schallopp Defense | |
| Apr 4, 2025 | Leisch | 1–0 | Stevic | Round 9: Leisch, Lukas - Stevic, Hrvoje | Slav Defense: Exchange Variation | |
| Dec 18, 2024 | Leisch | 0–1 | Koskinen | XI Sunway Sitges International Chess Festival 2024 - Group A | ? | |
| Dec 16, 2024 | Lee | 1–0 | Leisch | XI Sunway Sitges International Chess Festival 2024 - Group A | Nimzo-Indian Defense: Normal Variation | |
| Dec 15, 2024 | Leisch | 0–1 | Song | XI Sunway Sitges International Chess Festival 2024 - Group A | Slav Defense: Modern Line | |
| Dec 13, 2024 | Leisch | 1–0 | Montes Molina | XI Sunway Sitges International Chess Festival 2024 - Group A | French Defense: Advance Variation, Paulsen Attack | |
| Dec 12, 2024 | Kumar | 0–1 | Leisch | XI Sunway Sitges International Chess Festival 2024 - Group A | Nimzo-Indian Defense: Normal Variation, Classical Defense | |
| Dec 12, 2024 | Kumar | 0–1 | Leisch | XI Sunway Sitges International Chess Fes | Nimzo-Indian Defense: Normal Variation, Classical Defense | |
| Jul 29, 2024 | Leisch | ½–½ | Dragnev | Round 3: Leisch, Lukas - Dragnev, Valentin | King's Indian Defense: Fianchetto Variation, Classical Variation | |
| Jul 28, 2024 | Gruenwald | 0–1 | Leisch | Round 2: Gruenwald, Simon - Leisch, Lukas | French Defense: Exchange Variation | |
| Jul 27, 2024 | Leisch | 1–0 | Myagmarsuren | Round 1: Leisch, Lukas - Myagmarsuren, Mandukhai | Semi-Slav Defense | |
| Jul 13, 2024 | Leisch | 0–1 | Pavic | EUG open blitz | English Opening: Symmetrical Variation, Ultra-Symmetrical Variation | |
| Jul 13, 2024 | Leisch | 1–0 | Stauskas | EUG open blitz | Rapport-Jobava System | |
| Jul 13, 2024 | Folkeringa | * | Leisch | EUG open blitz | ? | |
| Jul 13, 2024 | Houhou | 0–1 | Leisch | EUG open blitz | French Defense: Tarrasch Variation, Open System, Euwe-Keres Line | |
| Jul 13, 2024 | Bartok | 0–1 | Leisch | EUG open blitz | French Defense: Advance Variation, Paulsen Attack | |
| Jul 12, 2024 | Leisch | 1–0 | Tomulic | European University Team Championship Open | Catalan Opening: Closed Variation, Rabinovich Variation | |
| Jul 12, 2024 | Pribelszky | ½–½ | Leisch | European University Team Championship Open | French Defense: King's Indian Attack | |
| Jul 12, 2024 | Manafov | ½–½ | Leisch | European University Team Championship Open | Slav Defense: Exchange Variation | |
| Jul 11, 2024 | Leisch | 1–0 | Jellema | European University Team Championship Open | Dutch Defense: Classical Variation | |
| Jul 11, 2024 | Leisch | ½–½ | Isik | European University Team Championship Open | Rapport-Jobava System | |
| Jul 11, 2024 | Gharibyan | ½–½ | Leisch | European University Team Championship Open | French Defense: Winawer Variation, Delayed Exchange Variation | |
| Jul 10, 2024 | Leisch | ½–½ | Papp | European University Team Championship Open | Rapport-Jobava System, with e6 | |
| Jul 10, 2024 | Muha | 0–1 | Leisch | European University Team Championship Open | Slav Defense: Quiet Variation | |
| Jul 10, 2024 | Vardanyan | 1–0 | Leisch | European University Team Championship Open | English Opening: Caro-Kann Defensive System | |
| Aug 4, 2024 | Blohberger | ½–½ | Leisch | Round 9: Blohberger, Felix - Leisch, Lukas | Slav Defense: Quiet Variation, Pin Defense | |
| Aug 3, 2024 | Breneis | 0–1 | Leisch | Round 8: Breneis, Lukas - Leisch, Lukas | English Opening: Symmetrical Variation | |
| Aug 2, 2024 | Leisch | ½–½ | Bauer | Round 7: Leisch, Lukas - Bauer, Sebastian | King's Indian Defense: Sämisch Variation, Sämisch Gambit | |
| Aug 1, 2024 | Schernthaner | ½–½ | Leisch | Round 6: Schernthaner, David - Leisch, Lukas | French Defense: Steinitz Variation, Boleslavsky Variation | |
| Jul 31, 2024 | Leisch | ½–½ | Schwabeneder | Round 5: Leisch, Lukas - Schwabeneder, Florian | English Defense | |
| Jul 30, 2024 | Neumeier | 0–1 | Leisch | Round 4: Neumeier, Klaus - Leisch, Lukas | English Opening: Agincourt Defense, Neo-Catalan Declined | |
| Apr 15, 2023 | Donchenko | 1–0 | Leisch | Austrian Bundesliga | Zukertort Opening | |
| Apr 14, 2023 | Leisch | 0–1 | Horvath | Austrian Bundesliga | English Opening: Anglo-Indian Defense | |
| Apr 13, 2023 | Moussard | ½–½ | Leisch | Austrian Bundesliga | Sicilian Defense: Dragon Variation, Yugoslav Attack, Modern Line | |
| Mar 26, 2023 | Leisch | ½–½ | Bosiocic | Austrian Bundesliga | English Opening | |
| Mar 25, 2023 | Roseneck | 1–0 | Leisch | Austrian Bundesliga | Semi-Slav Defense | |
| Mar 24, 2023 | Leisch | 1–0 | Krassowizkij | Austrian Bundesliga | English Opening: Agincourt Defense | |
| Mar 23, 2023 | Leisch | ½–½ | Janzelj | Austrian Bundesliga | English Opening: Agincourt Defense, Catalan Defense Accepted | |
| Mar 13, 2023 | Leisch | ½–½ | Kosakowski | European Individual Chess Championship 2023 | English Opening: Great Snake Variation | |
| Mar 9, 2023 | Gorodetzky | ½–½ | Leisch | European Individual Chess Championship 2023 | Italian Game: Giuoco Pianissimo, Italian Four Knights Variation | |
| Mar 8, 2023 | Leisch | ½–½ | Kovacevic | European Individual Chess Championship 2023 | English Opening: King's English Variation | |
| Mar 7, 2023 | Djukic | ½–½ | Leisch | European Individual Chess Championship 2023 | Ruy Lopez: Berlin Defense | |
| Mar 6, 2023 | Leisch | ½–½ | Maurizzi | European Individual Chess Championship 2023 | Tarrasch Defense: Dubov Tarrasch | |
| Mar 5, 2023 | Petkov | ½–½ | Leisch | European Individual Chess Championship 2023 | Semi-Slav Defense | |
| Jan 21, 2023 | Haba | ½–½ | Leisch | Marianske Lazne 2023 | French Defense: Exchange Variation | |
| Jan 20, 2023 | Leisch | ½–½ | Niedbala | Marianske Lazne 2023 | Indian Defense: Wade-Tartakower Defense | |
| Jan 19, 2023 | Leisch | ½–½ | Lalic | Marianske Lazne 2023 | English Opening: King's English Variation, Four Knights Variation, Flexible Line | |
| Jan 18, 2023 | Pajeken | 1–0 | Leisch | Marianske Lazne 2023 | French Defense: Paulsen Variation | |
| Jan 17, 2023 | Leisch | 0–1 | Finek | Marianske Lazne 2023 | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| Jan 17, 2023 | Sorm | 1–0 | Leisch | Marianske Lazne 2023 | English Opening: King's English Variation, Four Knights Variation, Quiet Line | |
| Jan 16, 2023 | Leisch | ½–½ | Krejci | Marianske Lazne 2023 | English Opening: King's English Variation | |
| Jan 15, 2023 | Can | 1–0 | Leisch | Marianske Lazne 2023 | Italian Game: Classical Variation, Greco Gambit | |
| Jan 14, 2023 | Leisch | * | Ricken | Marianske Lazne 2023 | ? | |
| Nov 6, 2022 | Sadilek | 0–1 | Leisch | Austrian Bundesliga | Sicilian Defense: Closed, Traditional | |
| Nov 5, 2022 | Leisch | ½–½ | Berchtenbreiter | Austrian Bundesliga | English Opening: Great Snake Variation | |
| Feb 12, 2022 | Kruckenhauser | ½–½ | Leisch | Vienna February IM | Sicilian Defense: Moscow Variation, Main Line | |
| Feb 11, 2022 | Leisch | * | Baidetskyi | Vienna February IM | Caro-Kann Defense: Advance Variation | |
| Feb 10, 2022 | Leisch | 1–0 | Borrmann | Vienna February IM | Zukertort Opening: Nimzo-Larsen Variation | |
| Feb 9, 2022 | Cu Hor | 0–1 | Leisch | Vienna February IM | Réti Opening: Advance Variation | |
| Feb 8, 2022 | Leisch | ½–½ | Yankelevich | Vienna February IM | Indian Defense: King's Indian Variation, Fianchetto Variation | |
| Feb 7, 2022 | Leisch | 1–0 | Finek | Vienna February IM | Neo-Grünfeld Defense: Classical Variation, Original Defense | |
| Feb 7, 2022 | Peyrer | ½–½ | Leisch | Vienna February IM | Queen's Pawn Game: Symmetrical Variation, Pseudo-Catalan | |
| Feb 6, 2022 | Savanovic | ½–½ | Leisch | Vienna February IM | Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation, Nyezhmetdinov Attack | |
| Feb 5, 2022 | Leisch | * | Morgunov | Vienna February IM | ? | |
| Aug 22, 2021 | Leisch | 0–1 | Svana | Innsbruck Festival | English Opening: Anglo-Indian Defense | |
| Aug 22, 2021 | Schimnatkowski | * | Leisch | Innsbruck Festival | ? | |
| Aug 22, 2021 | Schimnatkowski | * | Leisch | Innsbruck Festival | ? | |
| Jun 6, 2021 | Leisch | 1–0 | Loescher | Austrian Blitz Championship | ? | |
| Jun 6, 2021 | Leisch | 1–0 | Sandhoefner | Austrian Blitz Championship | Sicilian Defense: Wing Gambit, Marshall Variation | |
| Jun 6, 2021 | Leisch | 0–1 | Enoeckl | Austrian Blitz Championship | French Defense: Advance Variation, Paulsen Attack | |
| Jun 6, 2021 | Leisch | * | Kummer | Austrian Blitz Championship | ? | |
| Jun 6, 2021 | Huber | ½–½ | Leisch | Austrian Blitz Championship | King's Indian Attack: Double Fianchetto | |
| Jun 6, 2021 | Diermair | 1–0 | Leisch | Austrian Blitz Championship | Réti Opening | |