| Feb 23, 2025 | Loeffler | 1–0 | Zounani | Round 9: Loeffler, Markus - Zounani, Yacine | French Defense: Wing Gambit | |
| Feb 22, 2025 | Chelly | 0–1 | Loeffler | Round 8: Chelly, Yahya - Loeffler, Markus | Nimzo-Indian Defense: Normal Variation, Gligoric System, Exchange Variation | |
| Feb 21, 2025 | Loeffler | 0–1 | Boulrens | Round 7: Loeffler, Markus - Boulrens, Ala Eddine | Ruy Lopez: Closed, Anti-Marshall | |
| Feb 21, 2025 | Kadi | 1–0 | Loeffler | Round 6: Kadi, Mohamed El Mouldi - Loeffler, Markus | Sicilian Defense: Kan Variation, Wing Attack | |
| Feb 20, 2025 | Loeffler | 0–1 | Rekik Ismail | Round 5: Loeffler, Markus - Rekik Ismail | Caro-Kann Defense: Advance Variation, Short Variation | |
| Feb 18, 2025 | Neininger | 0–1 | Loeffler | Round 4: Neininger, Ralph - Loeffler, Markus | English Opening: Symmetrical Variation, Three Knights Variation | |
| Feb 18, 2025 | Hallal | 1–0 | Loeffler | Round 3: Hallal,Tarik - Loeffler, Markus | Sicilian Defense: Kupreichik Variation | |
| Feb 16, 2025 | Loeffler | * | Messala | Round 1: Loeffler, Markus - Messala, Noureddine | ? | |
| Feb 15, 2025 | Loeffler | 0–1 | Velten | Round 2: Loeffler, Markus - Velten, Paul | French Defense: Paulsen Variation | |
| Oct 13, 2024 | Loeffler | 0–1 | Knoedler | SMM Nationalliga A 2024 | French Defense: Winawer Variation, Advance Variation | |
| Oct 12, 2024 | Gaehler | ½–½ | Loeffler | SMM Nationalliga A 2024 | French Defense: Wing Gambit | |
| Aug 25, 2024 | Loeffler | 0–1 | Georgiadis | SUI-chT Schwarz-Weiss Bern-Winterthur | Sicilian Defense: Najdorf Variation, English Attack | |
| Aug 24, 2024 | Godena | 1–0 | Loeffler | SUI-chT Mendrisio-Schwarz-Weiss Bern | Sicilian Defense: Alapin Variation | |
| Jun 23, 2024 | Heimann | 1–0 | Loeffler | SUI-chT Riehen-Schwarz-Weiss Bern | Sicilian Defense: Najdorf Variation, Opocensky Variation | |
| May 12, 2024 | Joie | 1–0 | Loeffler | Bundesturnier | Sicilian Defense: Moscow Variation, Moscow Gambit | |
| May 11, 2024 | Loeffler | 1–0 | Menzi | Bundesturnier | Ruy Lopez: Closed, Breyer Defense, Zaitsev Hybrid | |
| May 11, 2024 | Loeffler | ½–½ | Baenziger | Bundesturnier | Sicilian Defense: Najdorf Variation, English Attack | |
| May 10, 2024 | Loeffler | 1–0 | Bauer | Bundesturnier | French Defense: Winawer Variation, Advance Variation | |
| May 10, 2024 | Sutter | 1–0 | Loeffler | Bundesturnier | English Opening: Symmetrical Variation | |
| May 9, 2024 | Loeffler | 1–0 | Zecirovic | Bundesturnier | Caro-Kann Defense: Advance Variation, Short Variation | |
| May 9, 2024 | Haugner | 0–1 | Loeffler | Bundesturnier | Sicilian Defense: Najdorf Variation | |
| Apr 28, 2024 | Loeffler | 0–1 | Sigfusson | SUI-chT Schwarz-Weiss Bern-Reti | Ruy Lopez: Closed, Chigorin Defense | |
| Apr 14, 2024 | Fecker | 1–0 | Loeffler | SUI-chT Zuerich-Schwarz-Weiss Bern | Sicilian Defense: Moscow Variation | |
| Mar 30, 2024 | Loeffler | 0–1 | Stojanovic | Round 4: Loeffler, Markus - Stojanovic, Mihajlo | Petrov's Defense: Nimzowitsch Attack | |
| Mar 29, 2024 | Rohith Krishna S | 1–0 | Loeffler | Round 2: Rohith Krishna S - Loeffler, Markus | King's Indian Defense: Normal Variation, King's Knight Variation | |
| Mar 10, 2024 | Sokolov | 1–0 | Loeffler | SUI-chT Geneve-Schwarz-Weiss Bern | Sicilian Defense: Najdorf Variation, Opocensky Variation, Traditional Line | |
| Nov 17, 2022 | Loeffler | 0–1 | Holzke | 30th World Senior Chess Championship 2022 | Sicilian Defense: Najdorf Variation | |
| Jul 10, 2022 | Gallagher | 1–0 | Loeffler | Swiss Championship | ? | |
| Jul 9, 2022 | Georgescu | 1–0 | Loeffler | Swiss Championship | Caro-Kann Defense: Advance Variation, Tal Variation | |
| Jul 8, 2022 | Loeffler | ½–½ | Baenziger | Swiss Championship | King's Indian Attack: Keres Variation | |
| Jul 8, 2022 | Salzgeber | 0–1 | Loeffler | Swiss Championship | Nimzo-Indian Defense: Normal Variation, Gligoric System, Exchange Variation | |
| Jul 7, 2022 | Loeffler | 1–0 | Carre | Swiss Championship | Petrov's Defense: Nimzowitsch Attack | |
| Jul 6, 2022 | Loeffler | 0–1 | Udipi | Swiss Championship | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | |
| Jul 4, 2022 | Loeffler | ½–½ | Riedener | Swiss Championship | King's Indian Attack: Keres Variation | |
| Feb 21, 2022 | Loeffler | ½–½ | Basso | Cannes Open | Ruy Lopez: Open | |
| Aug 22, 2021 | Morgunov | 0–1 | Loeffler | Innsbruck Festival | Sicilian Defense: Moscow Variation | |
| Aug 22, 2021 | Morgunov | * | Loeffler | Innsbruck Festival | ? | |
| Aug 1, 2021 | Dornieden | 0–1 | Loeffler | Biel/Bienne Master (MTO) | Sicilian Defense: Alapin Variation, Barmen Defense, Modern Line | |
