| Sep 13, 2025 | Sampsonoglou | 0–1 | Ioannidis | Round 1: Sampsonoglou, Vasilios - Ioannidis, Evgenios | Queen's Pawn Game: Accelerated London System, Steinitz Countergambit | |
| Jul 19, 2025 | Penesis | 0–1 | Sampsonoglou | Round 9: Penesis, Dimitrios - Sampsonoglou, Vasilios | East Indian Defense | |
| Jul 14, 2025 | Giannoulakis | ½–½ | Sampsonoglou | Round 3: Giannoulakis, Lampros - Sampsonoglou, Vasilios | King's Indian Defense: Orthodox Variation, Positional Defense | |
| Jul 12, 2025 | Patrelakis | 1–0 | Sampsonoglou | Round 1: Patrelakis, Evaggelos - Sampsonoglou, Vasilios | Sicilian Defense: Najdorf Variation, English Attack | |
| Jul 3, 2025 | Makridis | 1–0 | Sampsonoglou | Round 4: Makridis, Dimitrios - Sampsonoglou, Vasilios | Scotch Game: Potter Variation | |
| Mar 1, 2025 | Sampsonoglou | 0–1 | Antonioudakis | Round 3: Sampsonoglou, Vasilios - Antonioudakis, Georgios | Rapport-Jobava System | |
| Jan 8, 2025 | Sampsonoglou | ½–½ | Marinidis | Round 9: Sampsonoglou, Vasilios - Marinidis, Stavros | Rapport-Jobava System | |
| Jan 7, 2025 | Tziotzios | 0–1 | Sampsonoglou | Round 8: Tziotzios, Dimitrios - Sampsonoglou, Vasilios | English Opening: Anglo-Indian Defense | |
| Jan 6, 2025 | Sampsonoglou | 1–0 | Polyzos | Round 7: Sampsonoglou, Vasilios - Polyzos, Vasileios | Sicilian Defense: Taimanov Variation, Bastrikov Variation, English Attack | |
| Jan 5, 2025 | Sampsonoglou | 1–0 | Stamatiadis | Round 6: Sampsonoglou, Vasilios - Stamatiadis, Georgios | Rapport-Jobava System | |
| Jan 5, 2025 | Siskos | 0–1 | Sampsonoglou | Round 5: Siskos, Marios - Sampsonoglou, Vasilios | Catalan Opening: Closed | |
| Jan 4, 2025 | Sampsonoglou | 1–0 | Petkaki | Round 4: Sampsonoglou, Vasilios - Petkaki, Danai | Pirc Defense: Sveshnikov System | |
| Jan 3, 2025 | Sampsonoglou | 1–0 | Ifoulis | Round 2: Sampsonoglou, Vasilios - Ifoulis, Antonios | Sicilian Defense: Hyperaccelerated Dragon | |
| Jan 3, 2025 | Tripodakis | 0–1 | Sampsonoglou | Round 3: Tripodakis, Emmanouil - Sampsonoglou, Vasilios | Sicilian Defense: Closed | |
| Jan 2, 2025 | Alexandrakis | 0–1 | Sampsonoglou | Round 1: Alexandrakis, Vasileios Sp - Sampsonoglou, Vasilios | Sicilian Defense: Najdorf Variation | |
| Mar 17, 2024 | Sampsonoglou | 0–1 | Valsamis | Round 6: Sampsonoglou, Vasilios - Valsamis, Alexandros | King's Indian Defense: Normal Variation, King's Knight Variation | |
| Mar 15, 2024 | Sampsonoglou | 0–1 | Loukopoulos | Round 2: Sampsonoglou, Vasilios - Loukopoulos, Panagiotis-Athanasi | King's Indian Attack | |
| Aug 13, 2022 | Alexakis | ½–½ | Sampsonoglou | National Greek Team Championship | Scotch Game: Potter Variation | |
