| Sep 4, 2023 | Nikolas Theodorou | ½–½ | Yasser Quesada Perez | Round 9: Nikolas Theodorou - Yasser Quesada Perez | English Opening: Anglo-Indian Defense | |
| Sep 4, 2023 | Nikolas Theodorou | 1–0 | Mikhail Antipov | Round 8: Nikolas Theodorou - Mikhail Antipov | Neo-Grünfeld Defense: Classical Variation, Original Defense | |
| Sep 4, 2023 | Nikolas Theodorou | 1–0 | Jason Liang | Round 7: Nikolas Theodorou - Jason Liang | King's Indian Attack: Keres Variation | |
| Sep 3, 2023 | Emilio Cordova | ½–½ | Nikolas Theodorou | Round 6: Emilio Cordova - Nikolas Theodorou | King's Indian Attack: Symmetrical Defense | |
| Sep 3, 2023 | Viktor Matviishen | ½–½ | Nikolas Theodorou | Round 5: Viktor Matviishen - Nikolas Theodorou | King's Indian Defense: Normal Variation | |
| Sep 2, 2023 | Nikolas Theodorou | 1–0 | Harshit Raja | Round 4: Nikolas Theodorou - Harshit Raja | English Opening: Agincourt Defense, Neo-Catalan Declined | |
| Sep 2, 2023 | Daniel Fernandez | ½–½ | Nikolas Theodorou | Round 3: Daniel Fernandez - Nikolas Theodorou | King's Indian Attack: Symmetrical Defense | |
| Sep 1, 2023 | Nikolas Theodorou | 1–0 | Andrei Macovei | Round 2: Nikolas Theodorou - Andrei Macovei | English Opening: Agincourt Defense, Neo-Catalan Declined | |
| Sep 1, 2023 | Advay Bansal | 0–1 | Nikolas Theodorou | Round 1: Advay Bansal - Nikolas Theodorou | French Defense: Winawer Variation, Advance Variation | |
| May 25, 2023 | Aleksandar Indjic | 0–1 | Nikolas Theodorou | Round 9: Aleksandar Indjic - Nikolas Theodorou | Sicilian Defense: Closed, Traditional | |
| May 24, 2023 | Nikolas Theodorou | ½–½ | Christopher Woojin Yoo | Round 8: Nikolas Theodorou - Christopher Woojin Yoo | Nimzo-Larsen Attack: Classical Variation | |
| May 23, 2023 | Samvel Ter-Sahakyan | ½–½ | Nikolas Theodorou | Round 7: Samvel Ter-Sahakyan - Nikolas Theodorou | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| May 22, 2023 | Nikolas Theodorou | 0–1 | Daniel Dardha | Round 6: Nikolas Theodorou - Daniel Dardha | Caro-Kann Defense: Endgame Variation | |
| May 21, 2023 | Andrey Esipenko | 1–0 | Nikolas Theodorou | Round 5: Andrey Esipenko - Nikolas Theodorou | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| May 20, 2023 | Nikolas Theodorou | 1–0 | Maksim Chigaev | Round 4: Nikolas Theodorou - Maksim Chigaev | Réti Opening: Anglo-Slav Variation, Bled Variation | |
| May 19, 2023 | Nikolas Theodorou | 1–0 | Abhimanyu Puranik | Round 3: Nikolas Theodorou - Abhimanyu Puranik | Sicilian Defense: Lasker-Pelikan Variation | |
| May 18, 2023 | Murali Karthikeyan | ½–½ | Nikolas Theodorou | Round 2: Murali Karthikeyan - Nikolas Theodorou | Queen's Pawn Game: London System | |
| May 17, 2023 | Sarin Nihal | 1–0 | Nikolas Theodorou | Round 1: Sarin Nihal - Nikolas Theodorou | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Nov 27, 2022 | Nikolas Theodorou | 1–0 | Sila Caglar | Round 9: Nikolas Theodorou - Sila Caglar | Queen's Gambit Declined | |
| Nov 27, 2022 | Ekin Ozenir | 0–1 | Nikolas Theodorou | Round 8: Ekin Ozenir - Nikolas Theodorou | King's Indian Defense: Petrosian Variation, Stein Defense | |
| Nov 26, 2022 | Justus Williams | ½–½ | Nikolas Theodorou | Round 6: Justus Williams - Nikolas Theodorou | King's Indian Defense: Fianchetto Variation, Yugoslav Variation, Rare Line | |
| Nov 25, 2022 | Nikolas Theodorou | ½–½ | Safal Bora | Round 5: Nikolas Theodorou - Safal Bora | Sicilian Defense: Accelerated Dragon, Maróczy Bind, Gurgenidze Variation | |
| Nov 25, 2022 | Olivier Chiku-Ratte | 0–1 | Nikolas Theodorou | Round 4: Olivier Chiku-Ratte - Nikolas Theodorou | Nimzo-Indian Defense: Sämisch Variation | |
| Nov 24, 2022 | Nikolas Theodorou | ½–½ | Mark Plotkin | Round 3: Nikolas Theodorou - Mark Plotkin | Slav Defense: Quiet Variation | |
| Nov 24, 2022 | Evan Park | ½–½ | Nikolas Theodorou | Round 2: Evan Park - Nikolas Theodorou | Sicilian Defense: Lasker-Pelikan Variation | |
| Nov 23, 2022 | Nikolas Theodorou | 1–0 | Alexander Costello | Round 1: Nikolas Theodorou - Alexander Costello | English Opening: Anglo-Indian Defense, Anglo-Grünfeld Variation | |
| Jan 17, 2022 | Nikolas Theodorou | ½–½ | Eric Li | Round 9: Nikolas Theodorou - Eric Li | King's Indian Attack | |
| Jan 17, 2022 | Balaji Daggupati | 0–1 | Nikolas Theodorou | Round 8: Balaji Daggupati - Nikolas Theodorou | Vienna Game: Frankenstein-Dracula Variation | |
| Jan 16, 2022 | Nikolas Theodorou | ½–½ | Kevin Wang | Round 7: Nikolas Theodorou - Kevin Wang | King's Indian Attack: Symmetrical Defense | |
| Jan 16, 2022 | Levy Rozman | ½–½ | Nikolas Theodorou | Round 6: Levy Rozman - Nikolas Theodorou | Rapport-Jobava System | |
| Jan 15, 2022 | Nikolas Theodorou | ½–½ | Djurabek Khamrakulov | Round 5: Nikolas Theodorou - Djurabek Khamrakulov | Queen's Gambit Accepted: Classical Defense, Steinitz Variation, Development Variation | |
| Jan 15, 2022 | Gabor Nagy | ½–½ | Nikolas Theodorou | Round 4: Gabor Nagy - Nikolas Theodorou | King's Indian Defense: Fianchetto Variation, Uhlmann-Szabo System | |
| Jan 14, 2022 | Jason Liang | 1–0 | Nikolas Theodorou | Round 3: Jason Liang - Nikolas Theodorou | Sicilian Defense: Keres Variation | |
| Jan 14, 2022 | Nikolas Theodorou | ½–½ | Robert Shlyakhtenko | Round 2: Nikolas Theodorou - Robert Shlyakhtenko | Queen's Gambit Accepted: Classical Defense, Main Line | |
| Jan 14, 2022 | Ivan Schitco | 0–1 | Nikolas Theodorou | Round 1: Ivan Schitco - Nikolas Theodorou | King's Indian Defense: Fianchetto Variation, Classical Variation | |
| Nov 28, 2021 | Harshit Raja | 0–1 | Nikolas Theodorou | Round 9: Harshit Raja - Nikolas Theodorou | Ruy Lopez: Cozio Defense | |
| Nov 28, 2021 | Nikolas Theodorou | ½–½ | Robby Kevlishvili | Round 8: Nikolas Theodorou - Robby Kevlishvili | Ruy Lopez: Closed, Anti-Marshall | |
| Nov 27, 2021 | Stavroula Tsolakidou | 0–1 | Nikolas Theodorou | Round 7: Stavroula Tsolakidou - Nikolas Theodorou | King's Indian Defense: Makogonov Variation | |
| Nov 27, 2021 | Nikolas Theodorou | 0–1 | Rahul Srivatshav Peddi | Round 6: Nikolas Theodorou - Rahul Srivatshav Peddi | Semi-Slav Defense: Anti-Moscow Gambit | |
| Nov 26, 2021 | Alexander Fishbein | ½–½ | Nikolas Theodorou | Round 5: Alexander Fishbein - Nikolas Theodorou | King's Indian Defense: Fianchetto Variation, Uhlmann-Szabo System | |
| Nov 26, 2021 | Safal Bora | 0–1 | Nikolas Theodorou | Round 4: Safal Bora - Nikolas Theodorou | King's Indian Attack: Symmetrical Defense | |
| Nov 25, 2021 | Nikolas Theodorou | ½–½ | Eylon Nakar | Round 3: Nikolas Theodorou - Eylon Nakar | Queen's Gambit Declined: Harrwitz Attack, Fianchetto Defense | |
| Nov 25, 2021 | Ming Lu | 0–1 | Nikolas Theodorou | Round 2: Ming Lu - Nikolas Theodorou | King's Indian Defense: Makogonov Variation | |
| Nov 24, 2021 | Nikolas Theodorou | 1–0 | Pedro Rodriguez Rivera | Round 1: Nikolas Theodorou - Pedro Rodriguez Rivera | Indian Defense | |
| Sep 7, 2021 | Mark Paragua | ½–½ | Nikolas Theodorou | Round 9: Mark Paragua - Nikolas Theodorou | King's Indian Defense: Normal Variation, King's Knight Variation | |
| Sep 6, 2021 | Nikolas Theodorou | 1–0 | Levy Rozman | Round 8: Nikolas Theodorou - Levy Rozman | Queen's Indian Defense: Classical Variation, Traditional Variation | |
| Sep 5, 2021 | Nikolas Theodorou | ½–½ | Tianqi Wang | Round 7: Nikolas Theodorou - Tianqi Wang | Benoni Defense: Benoni-Indian Defense, Kingside Move Order | |
| Sep 5, 2021 | Thomas Roussel-Roozmon | ½–½ | Nikolas Theodorou | Round 6: Thomas Roussel-Roozmon - Nikolas Theodorou | English Opening: Anglo-Indian Defense, King's Indian Formation | |
| Sep 4, 2021 | Nikolas Theodorou | 1–0 | Justin Wang | Round 5: Nikolas Theodorou - Justin Wang | King's Indian Attack: Yugoslav Variation | |
| Sep 4, 2021 | Andrew Hong | ½–½ | Nikolas Theodorou | Round 4: Andrew Hong - Nikolas Theodorou | Ruy Lopez: Cozio Defense | |
| Jul 5, 2021 | Nikolas Theodorou | ½–½ | John Fedorowicz | 49th Annual World Open | King's Indian Attack | |
| Jul 4, 2021 | Nikolas Theodorou | ½–½ | Carissa Yip | 49th Annual World Open | ? | |
| Jun 20, 2021 | Benjamin Gledura | ½–½ | Nikolas Theodorou | Round 9: Benjamin Gledura - Nikolas Theodorou | King's Indian Defense: Fianchetto Variation, Uhlmann-Szabo System | |
| Jun 20, 2021 | Nikolas Theodorou | ½–½ | Andrew Hong | Round 8: Nikolas Theodorou - Andrew Hong | Queen's Gambit Accepted: Central Variation, Greco Variation | |
| Jun 19, 2021 | Viktor Matviishen | 0–1 | Nikolas Theodorou | Round 7: Viktor Matviishen - Nikolas Theodorou | King's Indian Defense: Makogonov Variation | |
| Jun 19, 2021 | Nikolas Theodorou | ½–½ | Levy Rozman | Round 6: Nikolas Theodorou - Levy Rozman | Zukertort Opening: Kingside Fianchetto | |
| Jun 19, 2021 | Timur Gareyev | ½–½ | Nikolas Theodorou | Round 5: Timur Gareyev - Nikolas Theodorou | King's Indian Defense: Averbakh Variation | |
| Jun 18, 2021 | Nikolas Theodorou | ½–½ | Aleksey Sorokin | Round 4: Nikolas Theodorou - Aleksey Sorokin | Neo-Grünfeld Defense: Classical Variation, Modern Defense | |
| Jun 18, 2021 | Yaacov Norowitz | 0–1 | Nikolas Theodorou | Round 3: Yaacov Norowitz - Nikolas Theodorou | King's Indian Defense: Fianchetto Variation, Uhlmann-Szabo System | |
| Jun 17, 2021 | Nikolas Theodorou | 1–0 | Seth Homa | Round 2: Nikolas Theodorou - Seth Homa | Zukertort Opening: Sicilian Invitation | |
| Jun 17, 2021 | Ryo Wenyu Chen | 0–1 | Nikolas Theodorou | Round 1: Ryo Wenyu Chen - Nikolas Theodorou | Ruy Lopez: Morphy Defense, Schliemann Defense Deferred | |