| Jun 30, 2026 | Kalogridis | ½–½ | Xu | Round 9: Kalogridis, Antonios - Xu, Xiangyu | Queen's Gambit Accepted: Normal Variation | |
| Jun 30, 2026 | Kadric | 0–1 | Kalogridis | Round 8: Kadric, Denis - Kalogridis, Antonios | Zukertort Opening | |
| Jun 29, 2026 | Kalogridis | ½–½ | Lavrencic | Round 7: Kalogridis, Antonios - Lavrencic, Matic | Queen's Gambit Declined: Queen's Knight Variation | |
| Jun 29, 2026 | Gunesli | 0–1 | Kalogridis | Round 6: Gunesli, Eymen Giray - Kalogridis, Antonios | Caro-Kann Defense: Accelerated Panov Attack, Modern Variation | |
| Jun 27, 2026 | Dudin | ½–½ | Kalogridis | Round 4: Dudin, Gleb - Kalogridis, Antonios | Four Knights Game | |
| Jun 26, 2026 | Can | 1–0 | Kalogridis | Round 2: Can, Isik - Kalogridis, Antonios | English Opening: Symmetrical Variation, Anti-Benoni Variation, Geller Variation | |
| Apr 6, 2026 | Idani | 0–1 | Kalogridis | Grenke Chess Festival 2026 Open | Petrov's Defense: Modern Attack, Center Attack | |
| Apr 6, 2026 | Kalogridis | 1–0 | Lesny | Grenke Chess Festival 2026 Open | Sicilian Defense: Nimzowitsch Variation, Advance Variation | |
| Apr 5, 2026 | Kalogridis | 0–1 | Koellner | Grenke Chess Festival 2026 Open | Indian Defense: Wade-Tartakower Defense | |
| Apr 5, 2026 | Chasin | ½–½ | Kalogridis | Grenke Chess Festival 2026 Open | English Opening: Symmetrical Variation, Rubinstein Variation | |
| Apr 4, 2026 | Skarbarchuk | 0–1 | Kalogridis | Grenke Chess Festival 2026 Open | Neo-Grünfeld Defense: Delayed Exchange Variation | |
| Apr 4, 2026 | Kalogridis | 1–0 | Corral Nehama | Grenke Chess Festival 2026 Open | Nimzo-Indian Defense: Rubinstein System, Rubinstein Variation | |
| Apr 3, 2026 | Wernberg | ½–½ | Kalogridis | Grenke Chess Festival 2026 Open | London System, with Be2 | |
| Apr 3, 2026 | Kalogridis | 1–0 | Jansen | Grenke Chess Festival 2026 Open | King's Indian Defense: Normal Variation, Rare Defenses | |
| Apr 2, 2026 | Petzelberger | 0–1 | Kalogridis | Grenke Chess Festival 2026 Open | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Mar 23, 2026 | Kalogridis | ½–½ | Kouskoutis | 3rd International Open Chess Tournament of Katerini Group A | Semi-Slav Defense: Meran Variation, Wade Variation | |
| Mar 23, 2026 | Toliopoulos | 0–1 | Kalogridis | 3rd International Open Chess Tournament of Katerini Group A | Sicilian Defense: Moscow Variation | |
| Mar 22, 2026 | Gkavardinas | 1–0 | Kalogridis | 3rd International Open Chess Tournament of Katerini Group A | Sicilian Defense: Prins Variation | |
| Mar 20, 2026 | Kalogridis | ½–½ | Alexakis | 3rd International Open Chess Tournament of Katerini Group A | Benoni Defense: Classical Variation | |
| Feb 23, 2026 | Oikonomopoulos | 0–1 | Kalogridis | Round 7: Oikonomopoulos, Filippos - Kalogridis, Antonios | Sicilian Defense: Closed, Traditional | |
| Feb 22, 2026 | Kalogridis | 1–0 | Mustu | Round 6: Kalogridis, Antonios - Mustu, Hatice Asli | King's Indian Attack, with e6 | |
| Feb 20, 2026 | Giannopoulos | 1–0 | Kalogridis | Round 2: Giannopoulos, Iasonas - Kalogridis, Antonios | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Feb 19, 2026 | Kalogridis | 1–0 | Radonjanin | Round 1: Kalogridis, Antonios - Radonjanin, Nikola | King's Indian Attack: Spassky Variation | |
| Jan 10, 2026 | Tsaknakis | 0–1 | Kalogridis | Round 9: Tsaknakis, Zisis - Kalogridis, Antonios | Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation, Early Deviations | |
| Jan 9, 2026 | Kalogridis | ½–½ | Trimitzios | Round 8: Kalogridis, Antonios - Trimitzios, Petros | Semi-Slav Defense | |
| Jan 6, 2026 | Kollias | 0–1 | Kalogridis | Round 5: Kollias, Ioannis K. - Kalogridis, Antonios | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Jan 5, 2026 | Kalogridis | ½–½ | Tetepoulidis | Round 4: Kalogridis, Antonios - Tetepoulidis, Ioannis | King's Indian Defense: Petrosian Variation, Stein Defense | |
| Jan 4, 2026 | Siskou | 0–1 | Kalogridis | Round 3: Siskou, Evangelia - Kalogridis, Antonios | Dutch Defense: Leningrad Variation, Warsaw Variation | |
| Jan 4, 2026 | Kalogridis | 0–1 | Mantazis | Round 2: Kalogridis, Antonios - Mantazis, Georgios Rafail | Queen's Gambit Declined: Exchange Variation | |
| Jan 3, 2026 | Toliopoulos | 0–1 | Kalogridis | Round 1: Toliopoulos, Konstantinos - Kalogridis, Antonios | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Dec 31, 2025 | Kalogridis | ½–½ | Kotronias | Round 7: Kalogridis, Antonios - Kotronias, Vasilios | King's Indian Defense: Normal Variation, Rare Defenses | |
| Dec 31, 2025 | Krallis | 0–1 | Kalogridis | Round 6: Krallis, Christos - Kalogridis, Antonios | King's Indian Attack: Symmetrical Defense | |
| Dec 11, 2025 | Krallis | ½–½ | Kalogridis | Round 9: Krallis, Christos - Kalogridis, Antonios | Zukertort Opening: Nimzo-Larsen Variation | |
| Dec 10, 2025 | Kalogridis | 0–1 | Kotronias | Round 8: Kalogridis, Antonios - Kotronias, Vasilios | King's Indian Defense: Normal Variation, Rare Defenses | |
| Dec 9, 2025 | Kourkoulos-Arditis | 1–0 | Kalogridis | Round 7: Kourkoulos-Arditis, Stamatis - Kalogridis, Antonios | English Opening: Symmetrical Variation, Three Knights Variation | |
| Dec 8, 2025 | Kalogridis | 1–0 | Ioannidis | Round 6: Kalogridis, Antonios - Ioannidis, Evgenios | Queen's Gambit Declined: Charousek Variation | |
| Dec 6, 2025 | Patrelakis | 1–0 | Kalogridis | Round 4: Patrelakis, Evaggelos - Kalogridis, Antonios | Petrov's Defense: Millennium Attack | |
| Dec 5, 2025 | Kalogridis | 0–1 | Mastrovasilis | Round 3: Kalogridis, Antonios - Mastrovasilis, Athanasios | Semi-Slav Defense | |
| Dec 4, 2025 | Alexakis | ½–½ | Kalogridis | Round 2: Alexakis, Dimitris - Kalogridis, Antonios | Petrov's Defense: Classical Attack, Staunton Variation | |
| Dec 3, 2025 | Kalogridis | ½–½ | Tsarsitalidis | Round 1: Kalogridis, Antonios - Tsarsitalidis, Konstantinos | Semi-Slav Defense | |
| Dec 2, 2025 | Kalogridis | 1–0 | Nikolaidis | Round 5: Kalogridis, Antonios - Nikolaidis, Ioannis | Rapport-Jobava System | |
| Nov 24, 2025 | Mantazis | 0–1 | Kalogridis | 2nd Gavriil Mastrovasilis Memorial Rapid 2025 | Modern Defense: Three Pawns Attack | |
| Nov 24, 2025 | Bakalis | 0–1 | Kalogridis | 2nd Gavriil Mastrovasilis Memorial Rapid 2025 | English Opening | |
| Nov 24, 2025 | Kalogridis | 1–0 | Stoimenidis | 2nd Gavriil Mastrovasilis Memorial Rapid 2025 | Semi-Slav Defense | |
| Nov 24, 2025 | Kalogridis | 1–0 | Minas | 2nd Gavriil Mastrovasilis Memorial Rapid 2025 | Indian Defense: Normal Variation | |
| Nov 24, 2025 | Kalogridis | 1–0 | Vardakas | 2nd Gavriil Mastrovasilis Memorial Rapid 2025 | Indian Defense: Normal Variation | |
| Nov 24, 2025 | Kourkoulos-Arditis | ½–½ | Kalogridis | 2nd Gavriil Mastrovasilis Memorial Rapid 2025 | English Opening: King's English Variation | |
| Nov 24, 2025 | Kalogridis | 1–0 | Kalogeris | 2nd Gavriil Mastrovasilis Memorial Rapid 2025 | Nimzo-Indian Defense: Normal Variation | |
| Nov 22, 2025 | Boutikos | 0–1 | Kalogridis | 2nd Gavriil Mastrovasilis Memorial Rapid 2025 | Caro-Kann Defense: Two Knights Attack | |
| Nov 22, 2025 | Kalogridis | 1–0 | Giannoulas | 2nd Gavriil Mastrovasilis Memorial Rapid 2025 | Yusupov-Rubinstein System | |
| Sep 13, 2025 | Stankovic | ½–½ | Kalogridis | Round 10: Stankovic, Milos - Kalogridis, Antonios | Trompowsky Attack | |
| Sep 13, 2025 | Magkalakis | 0–1 | Kalogridis | Round 9: Magkalakis, Stefanos - Kalogridis, Antonios | Zukertort Opening: Dutch Variation | |
| Sep 13, 2025 | Kalogridis | 0–1 | Kourkoulos-Arditis | Round 8: Kalogridis, Antonios - Kourkoulos-Arditis, Stamatis | Benoni Defense: Modern Variation | |
| Sep 13, 2025 | Betsakos | 0–1 | Kalogridis | Round 7: Betsakos, Konstantinos - Kalogridis, Antonios | Dutch Defense: Hopton Attack | |
| Sep 13, 2025 | Kalogridis | 1–0 | Argiroudis | Round 6: Kalogridis, Antonios - Argiroudis, Stamatis | King's Indian Defense: Normal Variation, Rare Defenses | |
| Sep 13, 2025 | Kalogridis | 1–0 | Papadopoulos | Round 5: Kalogridis, Antonios - Papadopoulos, Panayotis | Nimzo-Indian Defense: Normal Variation | |
| Jul 31, 2025 | Kalogridis | ½–½ | Krawczyk | Round 5: Kalogridis, Antonios - Krawczyk, Flawian | Nimzo-Indian Defense: Normal Variation | |
| Jul 30, 2025 | Chen | ½–½ | Kalogridis | Round 4: Chen, Yuan - Kalogridis, Antonios | Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation | |
| Jul 29, 2025 | Kalogridis | 1–0 | Piddubna | Round 3: Kalogridis, Antonios - Piddubna, Bozhena | Nimzo-Indian Defense: Sämisch Variation | |
| Jul 29, 2025 | Nikhil M | ½–½ | Kalogridis | Round 2: Nikhil M - Kalogridis, Antonios | Zukertort Opening: Quiet System | |
| Jul 28, 2025 | Kalogridis | 1–0 | Iskos | Round 1: Kalogridis, Antonios - Iskos, Alexandros | Queen's Gambit Declined: Exchange Variation | |
| Jul 23, 2025 | Kalogridis | ½–½ | Manea | Round 9: Kalogridis, Antonios - Manea, Alexandru | Modern Defense: Standard Defense | |
| Jul 22, 2025 | Gagic | 1–0 | Kalogridis | Round 8: Gagic, Milan A - Kalogridis, Antonios | King's Indian Attack: Symmetrical Defense | |
| Jul 21, 2025 | Kalogridis | 1–0 | Martic | Round 7: Kalogridis, Antonios - Martic, Ivan | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Jul 20, 2025 | Zhong | ½–½ | Kalogridis | Round 6: Zhong, Kangmin - Kalogridis, Antonios | Zukertort Opening: Dutch Variation | |
| Jul 17, 2025 | Dinesh Rajan M | ½–½ | Kalogridis | Round 4: Dinesh Rajan M - Kalogridis, Antonios | Caro-Kann Defense: Advance Variation, Bronstein Variation | |
| Jul 16, 2025 | Kalogridis | ½–½ | Mehmed | Round 3: Kalogridis, Antonios - Mehmed, Elif | Queen's Gambit Declined: Exchange Variation | |
| Jul 14, 2025 | Kalogridis | ½–½ | Sadbhav Rautela | Round 1: Kalogridis, Antonios - Sadbhav Rautela | Slav Defense: Czech Variation, Carlsbad Variation | |
| Jul 3, 2025 | Naoum | 0–1 | Kalogridis | Round 6: Naoum, Spyridon - Kalogridis, Antonios | Grünfeld Defense: Russian Variation | |
| Jul 3, 2025 | Kalogridis | ½–½ | Papadopoulos | Round 4: Kalogridis, Antonios - Papadopoulos, Georgios | Nimzo-Indian Defense: Sämisch Variation | |
| Jul 3, 2025 | Pavlidis | 1–0 | Kalogridis | Round 3: Pavlidis, Antonios - Kalogridis, Antonios | Petrov's Defense: Nimzowitsch Attack | |
| Jul 3, 2025 | Kalogridis | 1–0 | Giannoulakis | Round 2: Kalogridis, Antonios - Giannoulakis, Lampros | Nimzo-Indian Defense: Normal Variation | |
| Jul 3, 2025 | Nikolaou | 0–1 | Kalogridis | Round 1: Nikolaou, Georgios - Kalogridis, Antonios | Dutch Defense: Leningrad Variation, Warsaw Variation | |
| Jul 3, 2025 | Gkoumas | ½–½ | Kalogridis | Round 5: Gkoumas, Georgios - Kalogridis, Antonios | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Jul 3, 2025 | Kalogridis | ½–½ | Banikas | Round 7: Kalogridis, Antonios - Banikas, Hristos | Nimzo-Indian Defense: Kmoch Variation | |
| Jun 22, 2025 | Mastrovasilis | ½–½ | Kalogridis | 43rd Hybrid Greek Cup F8 | Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation, Chelyabinsk Variation | |
| May 16, 2025 | Kalogridis | 1–0 | Ioannidis | Finals: Kalogridis, Antonios - Ioannidis, Evgenios | English Defense | |
| Apr 27, 2025 | Iermito | 1–0 | Kalogridis | Round 9: Iermito, Sebastian Dario - Kalogridis, Antonios | English Opening: Anglo-Indian Defense, King's Knight Variation | |
| Apr 26, 2025 | Kalogridis | ½–½ | Petkov | Round 8: Kalogridis, Antonios - Petkov, Momchil | King's Indian Defense: Exchange Variation | |
| Apr 24, 2025 | Klimkowski | ½–½ | Kalogridis | Round 5: Klimkowski, Jan - Kalogridis, Antonios | English Opening: Symmetrical Variation, Three Knights Variation | |
| Apr 23, 2025 | Kalogridis | 0–1 | Lu | Round 2: Kalogridis, Antonios - Lu, Shanglei | Nimzo-Indian Defense: Kmoch Variation | |
| Mar 3, 2025 | Kalogridis | 0–1 | Alexakis | Round 7: Kalogridis, Antonios - Alexakis, Dimitris | Nimzo-Indian Defense: St. Petersburg Variation, American Variation | |
| Mar 2, 2025 | Kalogridis | ½–½ | Patrelakis | Round 6: Kalogridis, Antonios - Patrelakis, Evaggelos | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Mar 2, 2025 | Pavlidou | 0–1 | Kalogridis | Round 5: Pavlidou, Ekaterini - Kalogridis, Antonios | Indian Defense: Anti-Grünfeld, Basman-Williams Attack | |
| Mar 1, 2025 | Kalogridis | 1–0 | Eftovska | Round 4: Kalogridis, Antonios - Eftovska, Lea | East Indian Defense | |
| Mar 1, 2025 | Ertugrul | 0–1 | Kalogridis | Round 3: Ertugrul, Berkay - Kalogridis, Antonios | Zukertort Opening: Sicilian Invitation | |
| Feb 27, 2025 | Kazantzoglou | ½–½ | Kalogridis | Round 1: Kazantzoglou, Stefanos - Kalogridis, Antonios | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Sep 1, 2024 | Kalogridis | ½–½ | Krallis | Piraeus GM Norm Tournament ' KORENTINIS MEMORIAL' | Nimzo-Indian Defense: Sämisch Variation | |
| Aug 31, 2024 | Harikrishnan.A.Ra | 1–0 | Kalogridis | Piraeus GM Norm Tournament ' KORENTINIS MEMORIAL' | Zukertort Opening: Sicilian Invitation | |
| Aug 30, 2024 | Kalogridis | 0–1 | Moutousis | Piraeus GM Norm Tournament ' KORENTINIS MEMORIAL' | King's Indian Defense: Orthodox Variation, Bayonet Attack | |
| Aug 29, 2024 | Mayank Chakraborty | 1–0 | Kalogridis | Piraeus GM Norm Tournament ' KORENTINIS MEMORIAL' | Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation | |
| Aug 28, 2024 | Kalogridis | 0–1 | Alexakis | Piraeus GM Norm Tournament ' KORENTINIS MEMORIAL' | Nimzo-Indian Defense: Kmoch Variation | |
| Aug 27, 2024 | Liu | 0–1 | Kalogridis | Piraeus GM Norm Tournament ' KORENTINIS MEMORIAL' | Neo-Grünfeld Defense: Ultra-Delayed Exchange Variation | |
| Aug 26, 2024 | Kalogridis | ½–½ | Kotronias | Piraeus GM Norm Tournament ' KORENTINIS MEMORIAL' | King's Indian Defense: Orthodox Variation | |
| Aug 25, 2024 | Nikcevic | 1–0 | Kalogridis | Piraeus GM Norm Tournament ' KORENTINIS MEMORIAL' | English Opening: King's English Variation, Kramnik-Shirov Counterattack | |
| Aug 24, 2024 | Kapnisis | 0–1 | Kalogridis | Piraeus GM Norm Tournament ' KORENTINIS MEMORIAL' | Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation, Early Deviations | |
| Jul 29, 2024 | Qalichava | ½–½ | Kalogridis | Round 1: Qalichava, Akaki - Kalogridis, Antonios | Trompowsky Attack | |
| Jul 25, 2024 | Harsha Bharathakoti | 1–0 | Kalogridis | Biel Chess Festival MTO | Grünfeld Defense: Russian Variation, Accelerated Variation | |
| Jul 24, 2024 | Kalogridis | 1–0 | Ohler | Biel Chess Festival MTO | Queen's Gambit Declined: Charousek Variation | |
| Jul 23, 2024 | Ganguly | 1–0 | Kalogridis | Biel Chess Festival MTO | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |