| Nov 30, 2025 | Nyzhnyk | ½–½ | Kraai | Round 9: Nyzhnyk, Illya - Kraai, Jesse | Queen's Gambit Declined: Three Knights Variation | |
| Nov 30, 2025 | Shabalov | 1–0 | Nyzhnyk | Round 8: Shabalov, Alexander - Nyzhnyk, Illya | Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation | |
| Nov 30, 2025 | Nyzhnyk | ½–½ | Tanenbaum | Round 7: Nyzhnyk, Illya - Tanenbaum, Zachary | Tarrasch Defense: Schara Gambit | |
| Nov 29, 2025 | Lu | ½–½ | Nyzhnyk | Round 6: Lu, Maximillian - Nyzhnyk, Illya | Catalan Opening: Open Defense | |
| Nov 28, 2025 | Nyzhnyk | 1–0 | Lin | Round 5: Nyzhnyk, Illya - Lin, Bryan Enming | Nimzo-Larsen Attack: Indian Variation | |
| Nov 28, 2025 | Rakhmatullaev | 1–0 | Nyzhnyk | Round 4: Rakhmatullaev, Almas - Nyzhnyk, Illya | Petrov's Defense: Modern Attack | |
| Nov 27, 2025 | Nyzhnyk | 1–0 | Narayanan | Round 3: Nyzhnyk, Illya - Narayanan, Samrug | Vienna Game: Mengarini Variation | |
| Nov 27, 2025 | Li | 0–1 | Nyzhnyk | Round 2: Li, Rachael - Nyzhnyk, Illya | Sicilian Defense: Closed | |
| Nov 26, 2025 | Nyzhnyk | 1–0 | Abraham | Round 1: Nyzhnyk, Illya - Abraham, John Z | Sicilian Defense: French Variation | |
| Mar 7, 2025 | Sofronie | ½–½ | Nyzhnyk | PICF 2025 - KAREL JANEČEK Open | Indian Defense | |
| Mar 6, 2025 | Nyzhnyk | 1–0 | Druska | PICF 2025 - KAREL JANEČEK Open | Rapport-Jobava System | |
| Mar 5, 2025 | Beerdsen | ½–½ | Nyzhnyk | PICF 2025 - KAREL JANEČEK Open | Petrov's Defense: Nimzowitsch Attack | |
| Mar 4, 2025 | Nyzhnyk | 1–0 | Shagbazyan | PICF 2025 - KAREL JANEČEK Open | Caro-Kann Defense: Tartakower Variation | |
| Mar 3, 2025 | Kraus | ½–½ | Nyzhnyk | PICF 2025 - KAREL JANEČEK Open | Petrov's Defense: Cozio Attack | |
| Mar 2, 2025 | Nyzhnyk | 1–0 | Svanda | PICF 2025 - KAREL JANEČEK Open | Zukertort Opening | |
| Mar 1, 2025 | Stinka | ½–½ | Nyzhnyk | PICF 2025 - KAREL JANEČEK Open | Sicilian Defense: Moscow Variation | |
| Feb 28, 2025 | Nyzhnyk | 1–0 | Dwilewicz | PICF 2025 - KAREL JANEČEK Open | Queen's Pawn Game: London System | |
| Feb 27, 2025 | Hrbolka | 0–1 | Nyzhnyk | PICF 2025 - KAREL JANEČEK Open | King's Indian Defense: Semi-Averbakh System | |
| Jun 14, 2024 | Wu | ½–½ | Nyzhnyk | Round 9: Wu, Sibo - Nyzhnyk, Illya | Queen's Pawn Game: Barry Attack | |
| Jun 14, 2024 | Nyzhnyk | 1–0 | Deng | Round 8: Nyzhnyk, Illya - Deng, Henry | English Opening: Caro-Kann Defensive System | |
| Jun 13, 2024 | Cruz | ½–½ | Nyzhnyk | Round 7: Cruz, Cristhian - Nyzhnyk, Illya | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Jun 13, 2024 | Nyzhnyk | ½–½ | Boros | Round 6: Nyzhnyk, Illya - Boros, Denes | Queen's Gambit Accepted: Central Variation, Alekhine System | |
| Jun 12, 2024 | Shivakumar | ½–½ | Nyzhnyk | Round 5: Shivakumar, Shawnak - Nyzhnyk, Illya | Slav Defense: Exchange Variation | |
| Jun 12, 2024 | Nyzhnyk | 1–0 | Tang | Round 4: Nyzhnyk, Illya - Tang, Dylan | Bishop's Opening: Berlin Defense | |
| Jun 11, 2024 | Vemparala | 0–1 | Nyzhnyk | Round 3: Vemparala, Nikash - Nyzhnyk, Illya | Sicilian Defense: Najdorf Variation, Opocensky Variation | |
| Jun 11, 2024 | Nyzhnyk | 1–0 | Zuluaga Mancilla | Round 2: Nyzhnyk, Illya - Zuluaga Mancilla, Cesar | Slav Defense: Chebanenko Variation | |
| Jun 11, 2024 | Nyzhnyk | 1–0 | Tang | Round 1: Nyzhnyk, Illya - Tang, Zoey | Slav Defense: Quiet Variation | |
| Feb 25, 2024 | Nyzhnyk | ½–½ | Raja Harshit | Round 9: Nyzhnyk, Illya - Raja Harshit | Slav Defense: Exchange Variation, Symmetrical Line | |
| Feb 25, 2024 | Kaplan | 0–1 | Nyzhnyk | Round 8: Kaplan, Avi Harrison - Nyzhnyk, Illya | King's Indian Defense: Kramer Variation | |
| Feb 25, 2024 | Nyzhnyk | ½–½ | Akobian | Round 10: Nyzhnyk, Illya - Akobian, Varuzhan | Bird Opening: Dutch Variation | |
| Feb 25, 2024 | Akobian | 1–0 | Nyzhnyk | Round 9: Akobian, Varuzhan - Nyzhnyk, Illya | King's Indian Defense: Smyslov Variation | |
| Feb 25, 2024 | Chandra | ½–½ | Nyzhnyk | Round 8: Chandra, Akshat - Nyzhnyk, Illya | Sicilian Defense: Moscow Variation | |
| Feb 25, 2024 | Nyzhnyk | ½–½ | Chandra | Round 7: Nyzhnyk, Illya - Chandra, Akshat | Caro-Kann Defense: Panov Attack, Main Line | |
| Feb 25, 2024 | Nyzhnyk | 0–1 | Caruana | Round 3: Nyzhnyk, Illya - Caruana, Fabiano | Queen's Gambit Declined: Ragozin Defense, Alekhine Variation | |
| Feb 25, 2024 | Nyzhnyk | 0–1 | Batsuren | Round 6: Nyzhnyk, Illya - Batsuren, Dambasuren | Queen's Gambit Declined: Three Knights Variation | |
| Feb 25, 2024 | Batsuren | 0–1 | Nyzhnyk | Round 5: Batsuren, Dambasuren - Nyzhnyk, Illya | English Opening: Agincourt Defense, Catalan Defense Accepted | |
| Feb 25, 2024 | Caruana | 0–1 | Nyzhnyk | Round 4: Caruana, Fabiano - Nyzhnyk, Illya | Sicilian Defense: Najdorf Variation, Zagreb Variation | |
| Feb 25, 2024 | Theodorou | ½–½ | Nyzhnyk | Round 2: Theodorou, Nikolas - Nyzhnyk, Illya | French Defense: King's Indian Attack | |
| Feb 25, 2024 | Nyzhnyk | 1–0 | Theodorou | Round 1: Nyzhnyk, Illya - Theodorou, Nikolas | King's Indian Defense: Fianchetto Variation, Classical Fianchetto | |
| Feb 24, 2024 | Nyzhnyk | 1–0 | Eckert | Round 7: Nyzhnyk, Illya - Eckert, Doug | Indian Defense | |
| Feb 24, 2024 | Dhyana Patel | 0–1 | Nyzhnyk | Round 6: Dhyana Patel - Nyzhnyk, Illya | King's Indian Defense: Kazakh Variation | |
| Feb 24, 2024 | Nyzhnyk | ½–½ | Cervantes Landeiro | Round 5: Nyzhnyk, Illya - Cervantes Landeiro, Thalia | Sicilian Defense: Najdorf Variation | |
| Feb 23, 2024 | Caglar | 0–1 | Nyzhnyk | Round 4: Caglar, Sila - Nyzhnyk, Illya | Caro-Kann Defense: Two Knights Attack, Mindeno Variation | |
| Feb 22, 2024 | Nyzhnyk | ½–½ | Ladan | Round 3: Nyzhnyk, Illya - Ladan, Nicholas | Queen's Gambit Declined: Ragozin Defense, Alekhine Variation | |
| Feb 22, 2024 | Ghazaryan | 0–1 | Nyzhnyk | Round 2: Ghazaryan, Raffi - Nyzhnyk, Illya | Sicilian Defense: Najdorf Variation | |
| Feb 21, 2024 | Williams | ½–½ | Nyzhnyk | Round 1: Justus Williams - Illya Nyzhnyk | Indian Defense: Przepiorka Variation | |
| Nov 11, 2024 | Nyzhnyk | ½–½ | Can | Round 9: Nyzhnyk, Illya - Can, Isik | Queen's Gambit Accepted: Central Variation, Alekhine System | |
| Nov 11, 2024 | Hardaway | ½–½ | Nyzhnyk | Round 8: Hardaway, Brewington - Nyzhnyk, Illya | French Defense: Rubinstein Variation, Capablanca Line | |
| Nov 10, 2024 | Nyzhnyk | ½–½ | Griffith | Round 6: Nyzhnyk, Illya - Griffith, Kyron | Nimzo-Indian Defense: Classical Variation, Noa Variation | |
| Nov 10, 2024 | Rozman | ½–½ | Nyzhnyk | Round 7: Rozman, Levy - Nyzhnyk, Illya | Slav Defense: Exchange Variation, Symmetrical Line | |
| Nov 9, 2024 | Nyzhnyk | ½–½ | Teclaf | Round 4: Nyzhnyk, Illya - Teclaf, Pawel | Four Knights Game: Scotch Variation Accepted | |
| Nov 9, 2024 | Kaliksteyn | 0–1 | Nyzhnyk | Round 5: Kaliksteyn, Alexander - Nyzhnyk, Illya | King's Indian Defense: Orthodox Variation | |
| Nov 8, 2024 | Nyzhnyk | ½–½ | Ostrovskiy | Round 2: Nyzhnyk, Illya - Ostrovskiy, Aleksandr | Queen's Gambit Declined: Semi-Tarrasch Defense | |
| Nov 8, 2024 | Barbosa | ½–½ | Nyzhnyk | Round 3: Barbosa, Oliver - Nyzhnyk, Illya | Semi-Slav Defense: Stoltz Variation | |
| Nov 7, 2024 | Williams | ½–½ | Nyzhnyk | Round 1: Williams, Justus - Nyzhnyk, Illya | Petrov's Defense: Cozio Attack | |
| Oct 19, 2024 | Williams | 0–1 | Nyzhnyk | Round 9: Williams, Justus - Nyzhnyk, Illya | Semi-Slav Defense: Marshall Gambit, Forgotten Variation | |
| Oct 17, 2024 | Nyzhnyk | ½–½ | Gazik | Round 8: Nyzhnyk, Illya - Gazik, Viktor | English Opening: King's English Variation, Four Knights Variation, Quiet Line | |
| Oct 17, 2024 | Harsha Bharathakoti | 0–1 | Nyzhnyk | Round 7: Harsha Bharathakoti - Nyzhnyk, Illya | Nimzo-Indian Defense: Three Knights Variation | |
| Oct 16, 2024 | Nyzhnyk | ½–½ | Corrales Jimenez | Round 6: Nyzhnyk, Illya - Corrales Jimenez, Fidel | Indian Defense: Anti-Grünfeld, Basman-Williams Attack | |
| Oct 15, 2024 | Nyzhnyk | 1–0 | Chen | Round 4: Nyzhnyk, Illya - Chen, Ryo | Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation | |
| Oct 15, 2024 | Rorrer | ½–½ | Nyzhnyk | Round 5: Rorrer, Grayson - Nyzhnyk, Illya | Slav Defense: Exchange Variation | |
| Oct 14, 2024 | Nyzhnyk | ½–½ | Torres Rosas | Round 2: Nyzhnyk, Illya - Torres Rosas, Luis Carlos | French Defense: MacCutcheon Variation, Lasker Variation | |
| Oct 13, 2024 | Eckert | 0–1 | Nyzhnyk | Round 1: Eckert, Doug - Nyzhnyk, Illya | English Opening: Anglo-Indian Defense, Queen's Knight Variation | |
| Jul 5, 2024 | Nyzhnyk | 1–0 | Lapan | 52nd Annual World Open | French Defense: Exchange Variation, Monte Carlo Variation | |
| Jul 5, 2024 | Nyzhnyk | * | Mendes Aaron Reeve | 52nd Annual World Open | ? | |
| Jul 4, 2024 | Nyzhnyk | * | Kretchetov | 52nd Annual World Open | ? | |
| Jul 4, 2024 | Shukla | 0–1 | Nyzhnyk | 52nd Annual World Open | Sicilian Defense: Scheveningen Variation, Classical Variation | |
| Jul 1, 2023 | Perrine | 0–1 | Nyzhnyk | 51st Annual World Open | Zukertort Opening: Reversed Grünfeld | |
| Mar 12, 2023 | Nyzhnyk | 1–0 | Stearman | Saint Louis Super Swiss | Queen's Indian Defense: Fianchetto Variation, Nimzowitsch Variation, Nimzowitsch Attack | |
| Mar 12, 2023 | Daggupati | ½–½ | Nyzhnyk | Saint Louis Super Swiss | Petrov's Defense: Classical Attack, Staunton Variation | |
| Jul 23, 2022 | Nyzhnyk | 1–0 | Proleiko | 1000IM St. Louis IM Norm Tournament | English Opening: Romanishin Gambit | |
| Jul 22, 2022 | Nyzhnyk | 1–0 | Tokhirjonova | 1000IM St. Louis IM Norm Tournament | Indian Defense: Tartakower Attack | |
| Jul 22, 2022 | Sethuraman | 0–1 | Nyzhnyk | 1000IM St. Louis IM Norm Tournament | King's Indian Defense: Fianchetto Variation, Simagin Variation | |
| Jul 21, 2022 | Nyzhnyk | 1–0 | Kozelov | 1000IM St. Louis IM Norm Tournament | Queen's Gambit Declined: Chigorin Defense, Main Line | |
| Jul 21, 2022 | Wang | 0–1 | Nyzhnyk | 1000IM St. Louis IM Norm Tournament | Sicilian Defense: Closed | |
| Jul 20, 2022 | Altman | 0–1 | Nyzhnyk | 1000IM St. Louis IM Norm Tournament | King's Indian Defense | |
| Jul 20, 2022 | Cervantes | 0–1 | Nyzhnyk | 1000IM St. Louis IM Norm Tournament | Old Indian Defense | |
| Jul 19, 2022 | Nyzhnyk | 1–0 | Stefanov | 1000IM St. Louis IM Norm Tournament | Catalan Opening: Open Defense | |
| Jul 19, 2022 | Williams | 0–1 | Nyzhnyk | 1000IM St. Louis IM Norm Tournament | Queen's Gambit Declined: Vienna Variation, Quiet Variation | |
| Apr 29, 2022 | Nyzhnyk | 0–1 | Akobian | American Cup Blitz | Tarrasch Defense: Symmetrical Variation | |
| Apr 29, 2022 | Burke | 1–0 | Nyzhnyk | American Cup Blitz | Caro-Kann Defense: Advance Variation, Tal Variation | |
| Jul 5, 2021 | Nyzhnyk | * | Niemann | 49th Annual World Open | Ruy Lopez: Closed, Delayed Exchange | |
| Jul 5, 2021 | Burke | 1–0 | Nyzhnyk | 49th Annual World Open | Petrov's Defense: Classical Attack, Staunton Variation | |
| Jul 4, 2021 | Nyzhnyk | 1–0 | Andriasian | 49th Annual World Open | Slav Defense: Exchange Variation | |
| Jul 4, 2021 | Jacobson | * | Nyzhnyk | 49th Annual World Open | King's Indian Defense: Normal Variation, Rare Defenses | |
| Jul 3, 2021 | Nyzhnyk | ½–½ | Hakobyan | 49th Annual World Open | Queen's Gambit Declined: Ragozin Defense, Alekhine Variation | |
| Jul 3, 2021 | Theodorou | * | Nyzhnyk | 49th Annual World Open | King's Indian Attack: Symmetrical Defense | |
| Jul 2, 2021 | Nyzhnyk | 1–0 | Daggupati | 49th Annual World Open | Sicilian Defense: French Variation | |
| Jul 2, 2021 | Zhou | * | Nyzhnyk | 49th Annual World Open | Caro-Kann Defense: Endgame Offer | |
| Jul 1, 2021 | Nyzhnyk | 1–0 | Putnam | 49th Annual World Open | Indian Defense: London System | |
| Jun 1, 2021 | Nyzhnyk | 1–0 | Zhou | 8th Cherry Blossom Classic - Open | English Opening: Anglo-Indian Defense, King's Indian Formation | |
| May 31, 2021 | Hevia Alejano | 0–1 | Nyzhnyk | 8th Cherry Blossom Classic - Open | Slav Defense: Quiet Variation, Schallopp Defense | |
| May 31, 2021 | Theodorou | ½–½ | Nyzhnyk | 8th Cherry Blossom Classic - Open | King's Indian Attack: Double Fianchetto | |
| May 30, 2021 | Nyzhnyk | ½–½ | Stremavicius | 8th Cherry Blossom Classic - Open | Dutch Defense: Staunton Gambit, Alekhine Variation | |
| May 30, 2021 | Burke | ½–½ | Nyzhnyk | 8th Cherry Blossom Classic - Open | French Defense: Rubinstein Variation, Capablanca Line | |
| May 29, 2021 | Nyzhnyk | 1–0 | Panchanathan | 8th Cherry Blossom Classic - Open | Bishop's Opening: Vienna Hybrid | |
| May 29, 2021 | Jacobson | ½–½ | Nyzhnyk | 8th Cherry Blossom Classic - Open | Indian Defense: Anti-Nimzo-Indian | |
| May 28, 2021 | Nyzhnyk | 1–0 | Sarkar | 8th Cherry Blossom Classic - Open | Neo-Grünfeld Defense: Goglidze Attack | |
| May 28, 2021 | Thurlow | 0–1 | Nyzhnyk | 8th Cherry Blossom Classic - Open | Caro-Kann Defense: Advance Variation, Tal Variation | |
| — | Nyzhnyk | ½–½ | Escalante Ramirez | Saint Louis Super Swiss | King's Indian Defense: Steiner Attack | |