| Apr 5, 2026 | Ziegenfuss | 1–0 | Papasimakopoulos | Grenke Chess Festival 2026 Open | Queen's Pawn Game: Modern Defense | |
| Apr 4, 2026 | Koellner | ½–½ | Papasimakopoulos | Grenke Chess Festival 2026 Open | Queen's Pawn Game | |
| Mar 30, 2026 | Maze | 1–0 | Papasimakopoulos | Reykjavik Open 2026 | French Defense: King's Indian Attack | |
| Mar 29, 2026 | Papasimakopoulos | 1–0 | Kamp | Reykjavik Open 2026 | English Opening: Symmetrical Variation, Anti-Benoni Variation | |
| Mar 28, 2026 | Can | ½–½ | Papasimakopoulos | Reykjavik Open 2026 | French Defense: Winawer Variation, Advance Variation | |
| Mar 28, 2026 | Papasimakopoulos | ½–½ | Andersen | Reykjavik Open 2026 | Semi-Slav Defense: Meran Variation | |
| Mar 27, 2026 | Bech | 0–1 | Papasimakopoulos | Reykjavik Open 2026 | Queen's Gambit Declined | |
| Mar 26, 2026 | Maurizzi | 1–0 | Papasimakopoulos | Reykjavik Open 2026 | Queen's Gambit Accepted: Classical Defense, Main Line | |
| Feb 22, 2026 | Kolytas | ½–½ | Papasimakopoulos | Round 6: Kolytas, Spiridon - Papasimakopoulos, Alexandros | English Opening: Romanishin Gambit | |
| Feb 22, 2026 | Papasimakopoulos | 0–1 | Stefanou | Round 5: Papasimakopoulos, Alexandros - Stefanou, Konstantinos | Nimzo-Indian Defense: St. Petersburg Variation, Romanishin–Psakhis Variation | |
| Feb 21, 2026 | Stratigos | 0–1 | Papasimakopoulos | Round 4: Stratigos, Spiros - Papasimakopoulos, Alexandros | Modern Defense | |
| Feb 21, 2026 | Papasimakopoulos | 1–0 | Kiousi | Round 3: Papasimakopoulos, Alexandros - Kiousi, Panagiota | Zukertort Opening: Nimzo-Larsen Variation | |
| Feb 20, 2026 | Merkos | ½–½ | Papasimakopoulos | Round 2: Merkos, Thomas - Papasimakopoulos, Alexandros | Caro-Kann Defense: Modern Variation | |
| Feb 19, 2026 | Papasimakopoulos | 1–0 | Proutsalis | Round 1: Papasimakopoulos, Alexandros - Proutsalis, Marios Alexandros | Queen's Gambit Declined: Queen's Knight Variation | |
| Nov 30, 2025 | Warmerdam | 0–1 | Papasimakopoulos | Round 13: Warmerdam, Max - Papasimakopoulos, Alexandros | Old Indian Defense | |
| Nov 30, 2025 | Papasimakopoulos | ½–½ | Maurizzi | Round 12: Papasimakopoulos, Alexandros - Maurizzi, MarcAndria | King's Indian Defense | |
| Nov 30, 2025 | Serifovic | 0–1 | Papasimakopoulos | Round 11: Serifovic, Faruk - Papasimakopoulos, Alexandros | French Defense: Winawer Variation, Advance Variation, Moscow Variation | |
| Nov 30, 2025 | Papasimakopoulos | 1–0 | Dinev | Round 10: Papasimakopoulos, Alexandros - Dinev, Dejan | Slav Defense: Exchange Variation | |
| Nov 30, 2025 | Ribeiro | ½–½ | Papasimakopoulos | Round 9: Ribeiro, Rodrigo - Papasimakopoulos, Alexandros | Queen's Gambit Declined | |
| Nov 30, 2025 | Papasimakopoulos | ½–½ | Stamatiou | Round 8: Papasimakopoulos, Alexandros - Stamatiou, Rodolfos | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Nov 30, 2025 | Andriasian | 1–0 | Papasimakopoulos | Round 7: Andriasian, Zaven - Papasimakopoulos, Alexandros | French Defense: King's Indian Attack | |
| Nov 30, 2025 | Papasimakopoulos | 1–0 | Bauer | Round 6: Papasimakopoulos, Alexandros - Bauer, Christian | Mexican Defense | |
| Nov 30, 2025 | Papasimakopoulos | 1–0 | Maier | Round 5: Papasimakopoulos, Alexandros - Maier, Christian | Nimzo-Indian Defense: Spielmann Variation | |
| Nov 30, 2025 | Lohr | 0–1 | Papasimakopoulos | Round 4: Lohr, Maximilian - Papasimakopoulos, Alexandros | French Defense: Winawer Variation | |
| Nov 30, 2025 | Ramaj | 1–0 | Papasimakopoulos | Round 2: Ramaj, Ergit - Papasimakopoulos, Alexandros | French Defense: Winawer Variation, Alekhine-Maróczy Gambit | |
| Nov 30, 2025 | Beqa | 0–1 | Papasimakopoulos | Round 1: Beqa, Naim - Papasimakopoulos, Alexandros | ? | |
| Nov 29, 2025 | Droin | 1–0 | Papasimakopoulos | Round 11: Droin, Augustin - Papasimakopoulos, Alexandros | French Defense: Winawer Variation, Alekhine-Maróczy Gambit | |
| Nov 29, 2025 | Papasimakopoulos | 1–0 | Avdiu | Round 10: Papasimakopoulos, Alexandros - Avdiu, Bardh | Queen's Gambit Accepted: Normal Variation, Traditional System | |
| Nov 29, 2025 | Warmerdam | 1–0 | Papasimakopoulos | Round 9: Warmerdam, Max - Papasimakopoulos, Alexandros | English Opening: Agincourt Defense, Neo-Catalan Declined | |
| Nov 29, 2025 | Papasimakopoulos | 1–0 | Karacsonyi | Round 8: Papasimakopoulos, Alexandros - Karacsonyi, Kata | King's Indian Defense | |
| Nov 29, 2025 | Szakmary | 0–1 | Papasimakopoulos | Round 7: Szakmary, Domonkos - Papasimakopoulos, Alexandros | French Defense: Winawer Variation, Advance Variation, Smyslov Variation | |
| Nov 29, 2025 | Papasimakopoulos | 0–1 | Pultinevicius | Round 6: Papasimakopoulos, Alexandros - Pultinevicius, Paulius | English Opening: King's English Variation, Four Knights Variation | |
| Nov 28, 2025 | Sadiku | 0–1 | Papasimakopoulos | Round 5: Sadiku, Bedri - Papasimakopoulos, Alexandros | French Defense: King's Indian Attack | |
| Nov 28, 2025 | Papasimakopoulos | 0–1 | Kozul | Round 4: Papasimakopoulos, Alexandros - Kozul, Zdenko | English Opening: Anglo-Indian Defense, King's Indian Formation | |
| Nov 28, 2025 | Anton Guijarro | 0–1 | Papasimakopoulos | Round 3: Anton Guijarro, David - Papasimakopoulos, Alexandros | Zukertort Opening: Nimzo-Larsen Variation | |
| Nov 16, 2025 | Malamatas | 0–1 | Papasimakopoulos | Round 1: Malamatas, Konstantinos - Papasimakopoulos, Alexandros | Zukertort Opening | |
| Nov 6, 2025 | Spyratos | 0–1 | Papasimakopoulos | Round 6: Spyratos, Nikolaos - Papasimakopoulos, Alexandros | Zukertort Opening: Nimzo-Larsen Variation | |
| Nov 6, 2025 | Papasimakopoulos | 1–0 | Katsanis | Round 5: Papasimakopoulos, Alexandros - Katsanis, Vasileios Dim | Zukertort Opening | |
| Nov 6, 2025 | Papadopoulos | 0–1 | Papasimakopoulos | Round 4: Papadopoulos, Georgios - Papasimakopoulos, Alexandros | Queen's Pawn Game: Zukertort Variation | |
| Nov 6, 2025 | Papasimakopoulos | 1–0 | Papaioannou | Round 3: Papasimakopoulos, Alexandros - Papaioannou, Dimitrios | Zukertort Opening: Sicilian Invitation | |
| Nov 6, 2025 | Palaiologou | 0–1 | Papasimakopoulos | Round 2: Palaiologou, Apostolos - Papasimakopoulos, Alexandros | French Defense: Tarrasch Variation, Closed Variation | |
| Nov 6, 2025 | Papasimakopoulos | 1–0 | Armaos | Round 1: Papasimakopoulos, Alexandros - Armaos, Michail | Queen's Gambit Declined: Janowski Variation | |
| Nov 6, 2025 | Katsanis | 1–0 | Papasimakopoulos | Round 5: Katsanis, Vasileios Dim - Papasimakopoulos, Alexandros | Queen's Gambit Declined: Janowski Variation | |
| Nov 6, 2025 | Papasimakopoulos | 1–0 | Koutlas | Round 4: Papasimakopoulos, Alexandros - Koutlas, Nikolaos | Zukertort Opening: Nimzo-Larsen Variation | |
| Nov 6, 2025 | Papaioannou | 0–1 | Papasimakopoulos | Round 3: Papaioannou, Dimitrios - Papasimakopoulos, Alexandros | French Defense: Winawer Variation, Advance Variation | |
| Nov 6, 2025 | Papasimakopoulos | 1–0 | Kazantzoglou | Round 2: Papasimakopoulos, Alexandros - Kazantzoglou, Stefanos | Zukertort Opening | |
| Sep 13, 2025 | Papasimakopoulos | 1–0 | Mihov | Round 9: Papasimakopoulos, Alexandros - Mihov, Filip | Nimzo-Indian Defense: Spielmann Variation, Carlsbad Variation | |
| Sep 13, 2025 | Merkouropoulos | 0–1 | Papasimakopoulos | Round 8: Merkouropoulos, Dionysios - Papasimakopoulos, Alexandros | Nimzo-Indian Defense: Normal Variation, Classical Defense | |
| Sep 13, 2025 | Avramidou | 1–0 | Papasimakopoulos | Round 7: Avramidou, Anastasia - Papasimakopoulos, Alexandros | French Defense: Advance Variation, Euwe Variation | |
| Sep 13, 2025 | Papasimakopoulos | 1–0 | Kukov | Round 6: Papasimakopoulos, Alexandros - Kukov, Velislav | Slav Defense: Exchange Variation | |
| Sep 13, 2025 | Papasimakopoulos | 0–1 | Papakonstantinou | Round 5: Papasimakopoulos, Alexandros - Papakonstantinou, Dimitrios | Zukertort Opening: Nimzo-Larsen Variation | |
| Sep 13, 2025 | Kiratzopoulos | 0–1 | Papasimakopoulos | Round 4: Kiratzopoulos, Efthimios - Papasimakopoulos, Alexandros | Torre Attack: Classical Defense | |
| Sep 13, 2025 | Papasimakopoulos | 1–0 | Konstantinidis | Round 3: Papasimakopoulos, Alexandros - Konstantinidis, Mavroudis | Queen's Gambit Declined | |
| Sep 13, 2025 | Lagopatis | 0–1 | Papasimakopoulos | Round 2: Lagopatis, Nikolaos - Papasimakopoulos, Alexandros | French Defense: Exchange Variation | |
| Sep 13, 2025 | Papasimakopoulos | 1–0 | Christou | Round 1: Papasimakopoulos, Alexandros - Christou, Lambros | King's Indian Defense: Sämisch Variation, Bobotsov-Korchnoi-Petrosian Variation | |
| Sep 12, 2025 | Alexakis | 1–0 | Papasimakopoulos | Round 10: Alexakis, Dimitris - Papasimakopoulos, Alexandros | French Defense: Winawer Variation, Alekhine-Maróczy Gambit | |
| Jul 4, 2025 | Papadopoulos | 1–0 | Papasimakopoulos | Round 7: Papadopoulos, Nikolaos - Papasimakopoulos, Alexandros | Queen's Indian Defense: Fianchetto Variation, Check Variation, Intermezzo Line | |
| Jul 3, 2025 | Papasimakopoulos | 0–1 | Kelires | Round 6: Papasimakopoulos, Alexandros - Kelires, Andreas | Zukertort Opening | |
| Jul 3, 2025 | Mastrovasilis | ½–½ | Papasimakopoulos | Round 4: Mastrovasilis, Dimitrios - Papasimakopoulos, Alexandros | French Defense: Winawer Variation, Alekhine-Maróczy Gambit | |
| Jul 3, 2025 | Kormas | ½–½ | Papasimakopoulos | Round 3: Kormas, Georgios - Papasimakopoulos, Alexandros | Rat Defense: Accelerated Gurgenidze | |
| Jul 3, 2025 | Papasimakopoulos | 1–0 | Rahmanidis | Round 2: Papasimakopoulos, Alexandros - Rahmanidis, Petros | Indian Defense: Przepiorka Variation | |
| Jul 3, 2025 | Kalogridakis | ½–½ | Papasimakopoulos | Round 1: Kalogridakis, Theodoros - Papasimakopoulos, Alexandros | French Defense: Winawer Variation, Bogoljubow Variation | |
| Jul 3, 2025 | Papasimakopoulos | 1–0 | Chatzieleftheriou | Round 5: Papasimakopoulos, Alexandros - Chatzieleftheriou, Andreas | Zukertort Opening | |
| Apr 16, 2025 | Papasimakopoulos | 0–1 | Alexiadis | paphos2025 | English Opening: Anglo-Indian Defense, King's Indian Formation | |
| Apr 15, 2025 | Yildirim | 0–1 | Papasimakopoulos | paphos2025 | Pirc Defense: Classical Variation, Quiet System, Czech Defense | |
| Apr 14, 2025 | Kiseljova | ½–½ | Papasimakopoulos | paphos2025 | Marienbad System: Berg Variation | |
| Apr 13, 2025 | Kyparissopoulos | 1–0 | Papasimakopoulos | paphos2025 | French Defense: Advance Variation, Euwe Variation | |
| Apr 12, 2025 | Papasimakopoulos | ½–½ | Poetsch | paphos2025 | Nimzo-Indian Defense: Classical Variation, Noa Variation | |
| Apr 12, 2025 | Thomson | 0–1 | Papasimakopoulos | paphos2025 | Caro-Kann Defense | |
| Apr 11, 2025 | Papasimakopoulos | 1–0 | Luijpen | paphos2025 | Zukertort Opening | |
| Mar 19, 2025 | Papasimakopoulos | 0–1 | Klimkowski | Round 5: Papasimakopoulos, Alexandros - Klimkowski, Jan | Zukertort Opening: Dutch Variation | |
| Mar 16, 2025 | Horvath | 1–0 | Papasimakopoulos | Round 2: Horvath, Dominik - Papasimakopoulos, Alexandros | Bogo-Indian Defense: Retreat Variation | |
| Jan 25, 2025 | Papasimakopoulos | ½–½ | Jurek | marianky-2025 | Torre Attack: Classical Defense | |
| Jan 24, 2025 | Xu | ½–½ | Papasimakopoulos | marianky-2025 | Scotch Game: Scotch Gambit, Göring Gambit Declined | |
| Jan 23, 2025 | Papasimakopoulos | 1–0 | Dunnington | marianky-2025 | Queen's Pawn Game: Modern Defense | |
| Jan 22, 2025 | Del Rey | 0–1 | Papasimakopoulos | marianky-2025 | Tarrasch Defense: Symmetrical Variation | |
| Jan 21, 2025 | Papasimakopoulos | 1–0 | Smietanska | marianky-2025 | Réti Opening: Anglo-Slav Variation, Bled Variation | |
| Jan 21, 2025 | Prazak | ½–½ | Papasimakopoulos | marianky-2025 | Caro-Kann Defense: Advance Variation, Short Variation | |
| Jan 20, 2025 | Dylong | 0–1 | Papasimakopoulos | marianky-2025 | Caro-Kann Defense | |
| Jan 19, 2025 | Papasimakopoulos | ½–½ | Smolik | marianky-2025 | Nimzo-Indian Defense: Normal Variation | |
| Jan 18, 2025 | Garsky | 0–1 | Papasimakopoulos | marianky-2025 | Modern Defense | |
| Mar 3, 2025 | Kouskoutis | 0–1 | Papasimakopoulos | Round 7: Kouskoutis, Georgios-Alexandros - Papasimakopoulos, Alexandros | English Opening: King's English Variation, Nimzowitsch Variation | |
| Mar 2, 2025 | Papasimakopoulos | 1–0 | Tzagarakis | Round 6: Papasimakopoulos, Alexandros - Tzagarakis, Panagiotis | Zukertort Opening: Nimzo-Larsen Variation | |
| Mar 2, 2025 | Patrelakis | 1–0 | Papasimakopoulos | Round 5: Patrelakis, Evaggelos - Papasimakopoulos, Alexandros | French Defense: Rubinstein Variation, Blackburne Defense | |
| Mar 1, 2025 | Papasimakopoulos | 1–0 | Koutlas | Round 4: Papasimakopoulos, Alexandros - Koutlas, Nikolaos | Zukertort Opening | |
| Mar 1, 2025 | Bub | 0–1 | Papasimakopoulos | Round 3: Bub, Volker - Papasimakopoulos, Alexandros | Zukertort Opening: Black Mustang Defense | |
| Feb 28, 2025 | Papasimakopoulos | 1–0 | Akin | Round 2: Papasimakopoulos, Alexandros - Akin, Mehmet Efe | English Opening: Anglo-Indian Defense, King's Knight Variation | |
| Feb 27, 2025 | Kesidis | 0–1 | Papasimakopoulos | Round 1: Kesidis, Odyseas - Papasimakopoulos, Alexandros | English Opening: Anglo-Indian Defense, Queen's Indian Formation | |
| Dec 30, 2024 | Papasimakopoulos | 1–0 | Ahmed | FIDE World Blitz Chess Championship 2024 | Queen's Gambit Accepted: Classical Defense, Main Line | |
| Dec 30, 2024 | Papasimakopoulos | 0–1 | Volokitin | FIDE World Blitz Chess Championship 2024 | Nimzo-Indian Defense: Spielmann Variation | |
| Dec 30, 2024 | Papasimakopoulos | 0–1 | Smirnov | FIDE World Blitz Chess Championship 2024 | Nimzo-Indian Defense: Spielmann Variation, Carlsbad Variation | |
| Dec 30, 2024 | Papasimakopoulos | 0–1 | Amartuvshin | FIDE World Blitz Chess Championship 2024 | King's Indian Defense | |
| Dec 30, 2024 | Papasimakopoulos | 0–1 | Pereira | FIDE World Blitz Chess Championship 2024 | Benoni Defense | |
| Dec 30, 2024 | Papasimakopoulos | 1–0 | Blackwood | FIDE World Blitz Chess Championship 2024 | King's Indian Defense: Smyslov Variation | |
| Dec 30, 2024 | Ivanchuk | 1–0 | Papasimakopoulos | FIDE World Blitz Chess Championship 2024 | French Defense: Winawer Variation, Fingerslip Variation, Kunin Double Gambit | |
| Dec 30, 2024 | Anton Guijarro | 1–0 | Papasimakopoulos | FIDE World Blitz Chess Championship 2024 | French Defense: Winawer Variation, Advance Variation | |
| Dec 30, 2024 | Soo | 0–1 | Papasimakopoulos | FIDE World Blitz Chess Championship 2024 | Queen's Gambit Declined | |
| Dec 30, 2024 | Fressinet | 1–0 | Papasimakopoulos | FIDE World Blitz Chess Championship 2024 | English Opening: Anglo-Indian Defense, King's Knight Variation | |
| Dec 30, 2024 | Degenbaev | 1–0 | Papasimakopoulos | FIDE World Blitz Chess Championship 2024 | French Defense: Winawer Variation, Advance Variation | |
| Dec 30, 2024 | Manon | 0–1 | Papasimakopoulos | FIDE World Blitz Chess Championship 2024 | Modern Defense: Gurgenidze Defense | |