| May 9, 2026 | Galajyan | 1–0 | Mesropyan | rated rapid game | Vienna Game: Stanley Variation, Three Knights Variation | |
| May 9, 2026 | Makarov | 1–0 | Mesropyan | rated rapid game | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| May 9, 2026 | Mesropyan | 0–1 | Baylav | rated rapid game | Sicilian Defense: Najdorf Variation, Opocensky Variation | |
| May 9, 2026 | Shakhzodova | 0–1 | Mesropyan | rated rapid game | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| May 9, 2026 | Mesropyan | 1–0 | Elena | rated rapid game | Sicilian Defense: Boleslavsky Variation | |
| May 9, 2026 | Doria | 0–1 | Mesropyan | rated rapid game | English Opening: Carls-Bremen System | |
| May 9, 2026 | Mesropyan | 1–0 | Menzi | rated rapid game | Ruy Lopez: Closed, Pilnik Variation | |
| Feb 22, 2026 | Xu | 0–1 | Mesropyan | Round 9: Xu, Edison - Mesropyan, Hayk | King's Gambit Accepted: Hanstein Gambit | |
| Feb 22, 2026 | Mesropyan | 1–0 | Kapoor | Round 8: Mesropyan, Hayk - Kapoor, Gurveen | Sicilian Defense: French Variation | |
| Feb 22, 2026 | Hng | 0–1 | Mesropyan | Round 7: Hng, Mei-En Emmanuelle - Mesropyan, Hayk | Danish Gambit | |
| Feb 22, 2026 | Mesropyan | 1–0 | Borissow | Round 6: Mesropyan, Hayk - Borissow, Magnus | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Feb 21, 2026 | Mesropyan | 0–1 | Khaliunaa Gankhulug | Round 9: Mesropyan, Hayk - Khaliunaa Gankhulug | Ruy Lopez: Closed, Bogoljubow Variation | |
| Feb 21, 2026 | Lemeshev | 1–0 | Mesropyan | Round 8: Lemeshev, Ilya - Mesropyan, Hayk | King's Indian Attack | |
| Feb 21, 2026 | Mesropyan | 1–0 | Guest | Round 7: Mesropyan, Hayk - Guest, James | Ruy Lopez: Schliemann Defense | |
| Feb 21, 2026 | Cox | ½–½ | Mesropyan | Round 6: Cox, Toby - Mesropyan, Hayk | King's Gambit Declined: Queen's Knight Defense | |
| Feb 21, 2026 | Mesropyan | 1–0 | Imam-Sadeque | Round 5: Mesropyan, Hayk - Imam-Sadeque, Ali | Scandinavian Defense: Richter Variation | |
| Feb 21, 2026 | Muhunthan | 1–0 | Mesropyan | Round 4: Muhunthan, Charukgan - Mesropyan, Hayk | Ruy Lopez: Closed, Zaitsev System | |
| Feb 21, 2026 | Mesropyan | 0–1 | Carroll | Round 3: Mesropyan, Hayk - Carroll, Peter | Sicilian Defense: Lasker-Pelikan Variation, Retreat Variation | |
| Feb 21, 2026 | Hedger | 0–1 | Mesropyan | Round 2: Hedger, Alec - Mesropyan, Hayk | Scotch Game: Classical Variation | |
| Feb 21, 2026 | Mesropyan | 1–0 | Robertson | Round 1: Mesropyan, Hayk - Robertson, Felix | Caro-Kann Defense: Two Knights Attack | |
| Feb 21, 2026 | Mesropyan | 1–0 | Yuan | Round 4: Mesropyan, Hayk - Yuan, David | Sicilian Defense: Moscow Variation | |
| Feb 21, 2026 | Akeya-Price | 1–0 | Mesropyan | Round 5: Akeya-Price, Robert - Mesropyan, Hayk | Bogo-Indian Defense: Retreat Variation | |
| Feb 21, 2026 | Sow | 1–0 | Mesropyan | Round 3: Sow, MiaoGeng Malcolm - Mesropyan, Hayk | Danish Gambit Accepted | |
| Feb 21, 2026 | Mesropyan | 0–1 | Mahajan Ayush | Round 2: Mesropyan, Hayk - Mahajan Ayush | Ruy Lopez: Berlin Defense, Anti-Berlin Variation | |
| Feb 21, 2026 | Dias | 0–1 | Mesropyan | Round 1: Dias, Savin - Mesropyan, Hayk | Italian Game: Giuoco Piano | |
| Feb 8, 2026 | Nawalaniec | 1–0 | Mesropyan | Round 6: Nawalaniec, Adam - Mesropyan, Hayk | Ruy Lopez: Morphy Defense | |
| Feb 7, 2026 | Mesropyan | 0–1 | O`Donnell | Round 5: Mesropyan, Hayk - O`Donnell, Conor | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Dec 2, 2025 | Mesropyan | 0–1 | Harley | Round 8: Mesropyan, Hayk - Harley, Andrew D | French Defense: Winawer Variation, Warsaw Variation | |
| Dec 1, 2025 | Panjer | 1–0 | Mesropyan | Round 7: Panjer, Sidney - Mesropyan, Hayk | King's Indian Attack | |
| Nov 30, 2025 | Mesropyan | 1–0 | Kovalskyi | Round 6: Mesropyan, Hayk - Kovalskyi, Roman | Sicilian Defense: Hyperaccelerated Fianchetto | |
| Nov 30, 2025 | Koster | 1–0 | Mesropyan | Round 5: Koster, Ramon - Mesropyan, Hayk | Queen's Gambit Declined: Harrwitz Attack, Main Line | |
| Nov 29, 2025 | Li | 1–0 | Mesropyan | Round 4: Li, Guohao - Mesropyan, Hayk | English Opening: Agincourt Defense, Wimpy System | |
| Nov 28, 2025 | Mesropyan | 0–1 | Willow | Round 3: Mesropyan, Hayk - Willow, Jonah B | French Defense: Winawer Variation, Advance Variation | |
| Nov 28, 2025 | Schmider | 0–1 | Mesropyan | Round 2: Schmider, Niklas - Mesropyan, Hayk | Ruy Lopez: Morphy Defense | |
| Nov 27, 2025 | Mesropyan | ½–½ | Brunner | Round 1: Mesropyan, Hayk - Brunner, Nicolas | Sicilian Defense: Moscow Variation | |
| Jul 20, 2025 | Zhao | 0–1 | Mesropyan | ECF English Open Championship 2025 | Bogo-Indian Defense: Retreat Variation | |
| Jul 20, 2025 | Mesropyan | ½–½ | James | ECF English Open Championship 2025 | Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation, Chelyabinsk Variation | |
| Jul 19, 2025 | Lebedev | 1–0 | Mesropyan | ECF English Open Championship 2025 | Bogo-Indian Defense: Retreat Variation | |
| Jul 19, 2025 | Mesropyan | ½–½ | Larkin | ECF English Open Championship 2025 | Sicilian Defense: French Variation, Normal | |
| Jul 18, 2025 | Carroll | 1–0 | Mesropyan | ECF English Open Championship 2025 | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Jul 18, 2025 | Mesropyan | ½–½ | Emms | ECF English Open Championship 2025 | Ruy Lopez: Closed, Pilnik Variation | |
| Jul 18, 2025 | Fellowes | 0–1 | Mesropyan | ECF English Open Championship 2025 | Queen's Pawn Game: London System | |
| Jun 26, 2025 | Gunarathne | 1–0 | Mesropyan | Round 6: Gunarathne, Senith Thenula - Mesropyan, Hayk | Italian Game: Giuoco Pianissimo, Italian Four Knights Variation | |
| Jun 26, 2025 | Mesropyan | 1–0 | Cooper | Round 5: Mesropyan, Hayk - Cooper, Harvey | Caro-Kann Defense: Classical Variation | |
| Jun 25, 2025 | Mesropyan | 0–1 | Merriman | Round 3: Mesropyan, Hayk - Merriman, James | French Defense: Paulsen Variation | |
| Jun 25, 2025 | Han | 1–0 | Mesropyan | Round 2: Han, Yichen - Mesropyan, Hayk | Queen's Gambit Declined: Exchange Variation | |
| Jun 25, 2025 | Halen Harrison | 0–1 | Mesropyan | Round 1: Halen Harrison - Mesropyan, Hayk | Rapport-Jobava System | |
| Jun 14, 2025 | Ziems | 0–1 | Mesropyan | 2025 FIDE World Blitz Team Championship Pool C | Queen's Gambit Declined: Harrwitz Attack, Fianchetto Defense | |
| Jun 14, 2025 | Mukanov | 1–0 | Mesropyan | 2025 FIDE World Blitz Team Championship Pool C | Sicilian Defense: French Variation, Normal | |
| Jun 14, 2025 | Torres | 1–0 | Mesropyan | 2025 FIDE World Blitz Team Championship Pool C | Scotch Game: Potter Variation | |
| Jun 14, 2025 | Khamdamova | 1–0 | Mesropyan | 2025 FIDE World Blitz Team Championship Pool C | Ruy Lopez: Morphy Defense | |
| Jun 14, 2025 | Mesropyan | 1–0 | Lobkin | 2025 FIDE World Blitz Team Championship Pool C | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Jun 14, 2025 | Mesropyan | 1–0 | Agafonov | 2025 FIDE World Blitz Team Championship Pool C | Pirc Defense: Kholmov System | |
| Jun 14, 2025 | Mesropyan | ½–½ | Yontar | 2025 FIDE World Blitz Team Championship Pool C | Ruy Lopez: Bird Variation | |
| Jun 14, 2025 | Mortazavi | 0–1 | Mesropyan | 2025 FIDE World Blitz Team Championship Pool C | Four Knights Game | |
| Jun 14, 2025 | Tsaknakis | 1–0 | Mesropyan | 2025 FIDE World Blitz Team Championship Pool C | Ruy Lopez: Morphy Defense | |
| Jun 14, 2025 | Dauren | 1–0 | Mesropyan | 2025 FIDE World Blitz Team Championship Pool C | Queen's Pawn Game: Accelerated London System | |
| Jun 14, 2025 | Camp | 0–1 | Mesropyan | 2025 FIDE World Blitz Team Championship matches C1-C6 | Queen's Gambit Declined | |
| Jun 13, 2025 | Mesropyan | 0–1 | Schuster | Round 12: Mesropyan, Hayk - Schuster, Rebekka | French Defense: Exchange Variation | |
| Jun 13, 2025 | Mesropyan | ½–½ | Lapidus | Round 11: Mesropyan, Hayk - Lapidus, Alexey M. | Sicilian Defense: Moscow Variation, Main Line | |
| Jun 13, 2025 | Cepoi | 0–1 | Mesropyan | Round 10: Cepoi, Gesneria-Codruta - Mesropyan, Hayk | Queen's Indian Defense: Classical Variation, Traditional Variation, Nimzowitsch Line | |
| Jun 13, 2025 | Enkhbayar | 0–1 | Mesropyan | Round 9: Enkhbayar, Genden - Mesropyan, Hayk | Queen's Gambit Declined: Tartakower Defense | |
| Jun 12, 2025 | Mesropyan | 1–0 | Mihailidou | Round 8: Mesropyan, Hayk - Mihailidou, Magdalini | Ruy Lopez: Morphy Defense, Cozio Defense | |
| Jun 12, 2025 | Mesropyan | 1–0 | Sezdbekova | Round 7: Mesropyan, Hayk - Sezdbekova, Aizhan | Ruy Lopez: Morphy Defense, Anderssen Variation | |
| Jun 12, 2025 | Nayberg | 0–1 | Mesropyan | Round 6: Nayberg, Simona - Mesropyan, Hayk | Italian Game: Classical Variation, Greco Gambit | |
| Jun 12, 2025 | Mesropyan | 1–0 | Demir | Round 5: Mesropyan, Hayk - Demir, Aleyna | Scandinavian Defense: Main Line | |
| Jun 11, 2025 | Ziems | 1–0 | Mesropyan | 2025 FIDE World Rapid Team Championship matches 19-26 | Queen's Gambit Declined: Harrwitz Attack, Fianchetto Defense | |
| Jun 11, 2025 | Mindru | 0–1 | Mesropyan | 2025 FIDE World Rapid Team Championship matches 19-26 | Queen's Pawn Game: Colle System | |
| Jun 11, 2025 | Mesropyan | 1–0 | Widger | 2025 FIDE World Rapid Team Championschip matches 11-18 | Ruy Lopez: Steinitz Defense | |
| Jun 11, 2025 | Mesropyan | ½–½ | Yontar | 2025 FIDE World Rapid Team Championschip matches 11-18 | Ruy Lopez: Closed, Pilnik Variation | |
| Jun 28, 2024 | Tombolis | 1–0 | Mesropyan | Round 5: Tombolis, Christopher - Mesropyan, Hayk | Queen's Gambit Declined: Modern Variation, Normal Line | |
| Jun 28, 2024 | Kukreja | 1–0 | Mesropyan | Round 4: Kukreja, Karan - Mesropyan, Hayk | Catalan Opening: Closed | |
| Jun 27, 2024 | Buanne | 0–1 | Mesropyan | Round 1: Buanne, Luca - Mesropyan, Hayk | Ruy Lopez: Closed, Anti-Marshall | |
| Jun 27, 2024 | Mesropyan | 1–0 | Fung | Round 2: Mesropyan, Hayk - Fung, Marcus | Modern Defense | |
| Jun 27, 2024 | Mesropyan | 1–0 | Xu | Round 3: Mesropyan, Hayk - Xu, Weiming | Ruy Lopez: Steinitz Defense | |
| Oct 15, 2023 | Mesropyan | 0–1 | Lutsko | 2023 UK Chess Challenge Terafinal Under 18 | Ruy Lopez: Morphy Defense, Anderssen Variation | |
| Oct 15, 2023 | Mesropyan | 1–0 | Haria-Skuse | 2023 UK Chess Challenge Terafinal Under 18 | French Defense: Exchange Variation | |
| Oct 15, 2023 | Kukreja | 0–1 | Mesropyan | 2023 UK Chess Challenge Terafinal Under 18 | Bogo-Indian Defense: Retreat Variation | |
| Oct 15, 2023 | Liu | 1–0 | Mesropyan | 2023 UK Chess Challenge Terafinal Under 18 | Ruy Lopez: Closed, Zaitsev System | |
| Oct 15, 2023 | Makkar | 1–0 | Mesropyan | 2023 UK Chess Challenge Terafinal Under 18 | Queen's Gambit Declined: Harrwitz Attack, Fianchetto Defense | |
| Oct 14, 2023 | Mesropyan | 0–1 | Saunders | 2023 UK Chess Challenge Terafinal Under 18 | Caro-Kann Defense: Exchange Variation, Rubinstein Variation | |
| Oct 14, 2023 | Mesropyan | 0–1 | Madhavan | 2023 UK Chess Challenge Terafinal Under 18 | Caro-Kann Defense: Exchange Variation | |
| Oct 14, 2023 | Mesropyan | 1–0 | Dicen | 2023 UK Chess Challenge Terafinal Under 18 | Sicilian Defense: Dragon Variation, Yugoslav Attack, Modern Line | |
| Oct 14, 2023 | Arora | 1–0 | Mesropyan | 2023 UK Chess Challenge Terafinal Under 18 | Catalan Opening: Closed | |
| Oct 14, 2023 | Gera | 0–1 | Mesropyan | 2023 UK Chess Challenge Terafinal Under 18 | Queen's Pawn Game: Accelerated London System | |
| Oct 14, 2023 | Weersing | 0–1 | Mesropyan | 2023 UK Chess Challenge Terafinal Under 18 | Queen's Gambit Declined: Tartakower Defense, Exchange Variation | |
| Oct 10, 2021 | Mesropyan | ½–½ | Patel | 2021 UK Chess Challenge Terafinal Under 14 | Sicilian Defense: Smith-Morra Gambit Accepted | |
| Oct 10, 2021 | Mesropyan | 0–1 | Vyas | 2021 UK Chess Challenge Terafinal Under 14 | Sicilian Defense: Smith-Morra Gambit Accepted | |
| Oct 10, 2021 | Makkar | 1–0 | Mesropyan | 2021 UK Chess Challenge Terafinal Under 14 | Rapport-Jobava System | |
| Oct 10, 2021 | Dias | 0–1 | Mesropyan | 2021 UK Chess Challenge Terafinal Under 14 | Queen's Gambit Declined | |
| Oct 10, 2021 | Duke | 0–1 | Mesropyan | 2021 UK Chess Challenge Terafinal Under 14 | Bishop's Opening: Boi Variation | |
| Oct 9, 2021 | Mesropyan | 0–1 | Buanne | 2021 UK Chess Challenge Terafinal Under 14 | Sicilian Defense: Smith-Morra Gambit Accepted, Pin Defense | |
| Oct 9, 2021 | Mesropyan | 1–0 | Pert | 2021 UK Chess Challenge Terafinal Under 14 | Caro-Kann Defense: Advance Variation | |
| Oct 9, 2021 | Mesropyan | 1–0 | Caleshu | 2021 UK Chess Challenge Terafinal Under 14 | French Defense: Advance Variation, Main Line | |
| Oct 9, 2021 | Kolani | 1–0 | Mesropyan | 2021 UK Chess Challenge Terafinal Under 14 | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| Oct 9, 2021 | Arora | 0–1 | Mesropyan | 2021 UK Chess Challenge Terafinal Under 14 | Queen's Pawn Game: Zukertort Variation | |
| — | Mesropyan | ½–½ | Chopra | 2021 UK Chess Challenge Terafinal Under 14 | French Defense: Advance Variation, Paulsen Attack | |
| — | Mesropyan | 0–1 | Hauge | Round 2: Mesropyan, Hayk - Hauge, Lars Oskar | Sicilian Defense: French Variation | |
| — | Mesropyan | ½–½ | Fitzsimons | Round 4: Mesropyan, Hayk - Fitzsimons, David | French Defense: Steinitz Variation, Boleslavsky Variation | |
| — | Mesropyan | 1–0 | Dasgupta | Round 6: Mesropyan, Hayk - Dasgupta, Avyukt | French Defense: Rubinstein Variation, Fort Knox Variation | |