| Jul 3, 2025 | Konstantelias | ½–½ | Gouloutis | Round 1: Konstantelias, Konstantinos - Gouloutis, Nikolaos | Caro-Kann Defense: Classical Variation, Lobron System | |
| Mar 1, 2025 | Pavlidou | 1–0 | Konstantelias | Round 3: Pavlidou, Ekaterini - Konstantelias, Konstantinos | Dutch Defense: Rubinstein Variation | |
| Feb 27, 2025 | Ardenski | ½–½ | Konstantelias | Round 1: Ardenski, Dimitar - Konstantelias, Konstantinos | Scandinavian Defense: Main Line, Mieses Variation | |
| Aug 6, 2024 | Konstantelias | 0–1 | Gomes | Round 1: Konstantelias, Konstantinos - Gomes, Mary Ann | Bird Opening | |
| Aug 4, 2022 | Vardakas | 1–0 | Konstantelias | Thessaloniki Open | A | Queen's Gambit Declined | |
| Aug 3, 2022 | Konstantelias | ½–½ | Skembris | Thessaloniki Open | A | Sicilian Defense: Closed | |
| Aug 8, 2021 | Vasiliadis | * | Konstantelias | 30th OPEN Chess International Tournament | ? | |
| Aug 7, 2021 | Konstantelias | * | Koutlas | 30th OPEN Chess International Tournament | ? | |
| Aug 6, 2021 | Tzovanis | * | Konstantelias | 30th OPEN Chess International Tournament | ? | |
| Aug 5, 2021 | Konstantelias | * | Bardis | 30th OPEN Chess International Tournament | ? | |
| Aug 4, 2021 | Tsarsitalidis | * | Konstantelias | 30th OPEN Chess International Tournament | ? | |
| Aug 3, 2021 | Konstantelias | * | Schnelzer | 30th OPEN Chess International Tournament | ? | |
| Aug 2, 2021 | Konstantelias | * | Deli | 30th OPEN Chess International Tournament | ? | |
| Aug 2, 2021 | Mihailidou | * | Konstantelias | 30th OPEN Chess International Tournament | ? | |
| Aug 1, 2021 | Ioannidis | 1–0 | Konstantelias | 30th OPEN Chess International Tournament | Scandinavian Defense: Valencian Variation, Main Line | |
| — | Konstantelias | 0–1 | Qalichava | Round 1: Konstantelias, Konstantinos - Qalichava, Akaki | Sicilian Defense: Snyder Variation, Queen Fianchetto Variation | |
| — | Konstantelias | 0–1 | Ozturk | Round 7: Konstantelias, Konstantinos - Ozturk, Efe | French Defense: Horwitz Attack, Papa-Ticulat Gambit | |
| — | Kormas | 1–0 | Konstantelias | Round 2: Kormas, Georgios - Konstantelias, Konstantinos | Scandinavian Defense: Valencian Variation, Main Line | |
| — | Kiryttopoulos | ½–½ | Konstantelias | Round 6: Kiryttopoulos, Panagiotis Aris - Konstantelias, Konstantinos | Queen's Pawn Game: Symmetrical Variation, Pseudo-Catalan | |
| — | Karounis | 1–0 | Konstantelias | Round 8: Karounis, Ioannis - Konstantelias, Konstantinos | Scandinavian Defense: Main Line, Mieses Variation | |
