| Jul 17, 2024 | Mathioulakis | 0–1 | Kostas | Round 9: Mathioulakis, Fanis - Kostas, Panagiotis | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Jul 16, 2024 | Kostas | 0–1 | Sidiropoulos | Round 8: Kostas, Panagiotis - Sidiropoulos, Vasilis | Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation | |
| Jul 15, 2024 | Bartakke Aditya | ½–½ | Kostas | Round 7: Bartakke Aditya - Kostas, Panagiotis | Sicilian Defense: Lasker-Pelikan Variation | |
| Jul 15, 2024 | Kostas | 1–0 | Bartakke | Round 6: Kostas, Panagiotis - Bartakke, Amardeep S. | Sicilian Defense: Richter-Rauzer Variation, Classical Variation | |
| Jul 12, 2024 | Kostas | 1–0 | Zlotogorski | Round 2: Kostas, Panagiotis - Zlotogorski, Itay | Caro-Kann Defense: Classical Variation, Main Line | |
| Jul 11, 2024 | Moutzouris | 0–1 | Kostas | Round 1: Moutzouris, Emanuel - Kostas, Panagiotis | Réti Opening: Advance Variation | |
| Jul 11, 2024 | Patrelakis | 1–0 | Kostas | Round 5: Patrelakis, Evaggelos - Kostas, Panagiotis | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Jul 11, 2024 | Kostas | ½–½ | Fragkos | Round 4: Kostas, Panagiotis - Fragkos, Vasileios | Scotch Game | |
| Jul 11, 2024 | Festas | 0–1 | Kostas | Round 3: Festas, Georgios - Kostas, Panagiotis | Queen's Pawn Game: Accelerated London System | |
| Aug 8, 2024 | Kostas | 0–1 | Stratigos | Round 4: Kostas, Panagiotis - Stratigos, Spiros | Sicilian Defense: Dragon Variation, Yugoslav Attack, Modern Line | |
| Aug 7, 2024 | Kostas | 1–0 | Galanis | Round 2: Kostas, Panagiotis - Galanis, Nikolaos-Panagiotis | Richter-Veresov Attack: Two Knights System, Grünfeld Defense | |
| Aug 7, 2024 | Padmini | 1–0 | Kostas | Round 3: Padmini, Rout - Kostas, Panagiotis | Scandinavian Defense: Richter Variation | |
| Sep 9, 2021 | Kostas | 1–0 | Rousis | Greek Team Championship | Scandinavian Defense: Gubinsky-Melts Defense | |
| — | Kostas | 1–0 | Koutras | ΠΑΝΕΛΛΗΝΙΟ ΠΡΩΤΑΘΛΗΜΑ BLITZ 2025 | French Defense: Classical Variation, Burn Variation | |
| — | Kostas | 1–0 | Tsilimparis | ΠΑΝΕΛΛΗΝΙΟ ΠΡΩΤΑΘΛΗΜΑ BLITZ 2025 | French Defense: Classical Variation, Burn Variation | |
| — | Kostas | 1–0 | Alexandri | ΠΑΝΕΛΛΗΝΙΟ ΑΤΟΜΙΚΟ ΠΡΩΤΑΘΛΗΜΑ RAPID 2025 | Richter-Veresov Attack: Two Knights System | |
| — | Kostas | 1–0 | Marinidis | ΠΑΝΕΛΛΗΝΙΟ ΑΤΟΜΙΚΟ ΠΡΩΤΑΘΛΗΜΑ RAPID | French Defense: Rubinstein Variation, Blackburne Defense | |
| — | Krallis | 1–0 | Kostas | ΠΑΝΕΛΛΗΝΙΟ ΠΡΩΤΑΘΛΗΜΑ BLITZ 2025 | Scandinavian Defense: Modern Variation | |
| — | Alexakis | 1–0 | Kostas | ΠΑΝΕΛΛΗΝΙΟ ΠΡΩΤΑΘΛΗΜΑ BLITZ 2025 | Scandinavian Defense: Modern Variation | |
| — | Maggos | 1–0 | Kostas | ΠΑΝΕΛΛΗΝΙΟ ΠΡΩΤΑΘΛΗΜΑ BLITZ 2025 | Scandinavian Defense: Marshall Variation | |
| — | Ioannidis | 1–0 | Kostas | ΠΑΝΕΛΛΗΝΙΟ ΑΤΟΜΙΚΟ ΠΡΩΤΑΘΛΗΜΑ RAPID | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| — | Krallis | 1–0 | Kostas | ΠΑΝΕΛΛΗΝΙΟ ΑΤΟΜΙΚΟ ΠΡΩΤΑΘΛΗΜΑ RAPID | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| — | Exarchos | 1–0 | Kostas | ΠΑΝΕΛΛΗΝΙΟ ΑΤΟΜΙΚΟ ΠΡΩΤΑΘΛΗΜΑ RAPID | Vienna Game: Falkbeer Variation | |
