| Feb 22, 2026 | Guest | 0–1 | Clarke | Round 9: Guest, James - Clarke, Niall | Vienna Gambit, with Max Lange Defense | |
| Feb 22, 2026 | Clarke | 1–0 | Chris Biju | Round 8: Clarke, Niall - Chris Biju, Calvin | French Defense: Exchange Variation | |
| Feb 22, 2026 | Choong | 1–0 | Clarke | Round 7: Choong, Han-sen - Clarke, Niall | Englund Gambit Declined: Reversed French | |
| Feb 22, 2026 | Clarke | ½–½ | Cebolla Ruiz | Round 6: Clarke, Niall - Cebolla Ruiz, David | Philidor Defense: Lion Variation | |
| Feb 21, 2026 | Clarke | 1–0 | Nyberg | Round 9: Clarke, Niall - Nyberg, Max | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| Feb 21, 2026 | Clarke | 0–1 | Radhakrishnan | Round 8: Clarke, Niall - Radhakrishnan, Dhruv | Sicilian Defense: Kan Variation, Knight Variation | |
| Feb 21, 2026 | Gilmore | 1–0 | Clarke | Round 7: Gilmore, Samuel - Clarke, Niall | Semi-Slav Defense | |
| Feb 21, 2026 | Clarke | 0–1 | John | Round 6: Clarke, Niall - John, Joshua | Sicilian Defense: Taimanov Variation, Bastrikov Variation | |
| Feb 21, 2026 | Clarke | 0–1 | Rushbrooke | Round 5: Clarke, Niall - Rushbrooke, Remy | Sicilian Defense: Kalashnikov Variation | |
| Feb 21, 2026 | Dias | ½–½ | Clarke | Round 4: Dias, Savin - Clarke, Niall | Italian Game: Deutz Gambit | |
| Feb 21, 2026 | Akeya-Price | 0–1 | Clarke | Round 3: Akeya-Price, Robert - Clarke, Niall | Indian Defense: Anti-Nimzo-Indian | |
| Feb 21, 2026 | Clarke | 0–1 | Jackson | Round 2: Clarke, Niall - Jackson, Edward | Caro-Kann Defense: Exchange Variation | |
| Feb 21, 2026 | Lorenzo Munoz | 0–1 | Clarke | Round 1: Lorenzo Munoz, Adrian - Clarke, Niall | Nimzo-Larsen Attack: Classical Variation | |
| Feb 21, 2026 | Clarke | ½–½ | Gray | Round 5: Clarke, Niall - Gray, Edward | Philidor Defense: Lion Variation, Lion's Claw, with Be2 and c6 | |
| Feb 21, 2026 | Clarke | 0–1 | Pacetti Terra | Round 4: Clarke, Niall - Pacetti Terra, Nicolas | Italian Game: Classical Variation, Giuoco Pianissimo | |
| Feb 21, 2026 | Rathbone-Jones | 1–0 | Clarke | Round 3: Rathbone-Jones, Ifan - Clarke, Niall | Queen's Pawn Game: Symmetrical Variation | |
| Feb 21, 2026 | Hedger | 1–0 | Clarke | Round 2: Hedger, Alec - Clarke, Niall | Scotch Game: Classical Variation | |
| Feb 21, 2026 | Pang | 1–0 | Clarke | Round 1: Pang, Khai Jie Ryan - Clarke, Niall | Ruy Lopez: Berlin Defense, Anti-Berlin Variation | |
| Sep 20, 2025 | Clarke | 0–1 | Badacsonyi | 2025 UK Open Blitz Qualifier: London 3 (Golders Green) | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| Sep 3, 2024 | Clarke | 0–1 | Yuan | Round 14: Clarke, Niall - Yuan, David | Queen's Gambit Declined: Harrwitz Attack, Orthodox Defense | |
| Sep 3, 2024 | Yuan | 1–0 | Clarke | Round 13: Yuan, David - Clarke, Niall | Sicilian Defense: Najdorf Variation, English Attack | |
| Sep 3, 2024 | Clarke | ½–½ | Sahdev | Round 12: Clarke, Niall - Sahdev, Varun | Modern Defense: Geller's System | |
| Sep 3, 2024 | Sahdev | ½–½ | Clarke | Round 11: Sahdev, Varun - Clarke, Niall | King's Gambit | |
| Sep 3, 2024 | Kirupakaran | 1–0 | Clarke | Round 10: Kirupakaran, Vishnu - Clarke, Niall | Vienna Game: Stanley Variation, Three Knights Variation | |
| Sep 3, 2024 | Clarke | 0–1 | Kirupakaran | Round 9: Clarke, Niall - Kirupakaran, Vishnu | Sicilian Defense: Four Knights Variation, Exchange Variation | |
| Sep 3, 2024 | Clarke | 0–1 | Grose | Round 8: Clarke, Niall - Grose, Kameron | Sicilian Defense: Najdorf Variation | |
| Sep 3, 2024 | Grose | 1–0 | Clarke | Round 7: Grose, Kameron - Clarke, Niall | Italian Game: Classical Variation, Giuoco Pianissimo, with h6 | |
| Sep 3, 2024 | Ewart | 0–1 | Clarke | Round 6: Ewart, Thomas - Clarke, Niall | Scotch Game: Potter Variation | |
| Sep 3, 2024 | Clarke | 1–0 | Ewart | Round 5: Clarke, Niall - Ewart, Thomas | Italian Game: Giuoco Pianissimo, Normal | |
| Sep 3, 2024 | Clarke | 0–1 | Clarke | Round 4: Clarke, Niall - Clarke, Connor | Four Knights Game: Scotch Variation | |
| Sep 3, 2024 | Clarke | 1–0 | Clarke | Round 3: Clarke, Connor - Clarke, Niall | Rapport-Jobava System | |
| Sep 3, 2024 | Ramasamy | 1–0 | Clarke | Round 2: Ramasamy, Thirukumaran - Clarke, Niall | Caro-Kann Defense: Tartakower Variation | |
| Sep 3, 2024 | Clarke | 1–0 | Ramasamy | Round 1: Clarke, Niall - Ramasamy, Thirukumaran | Caro-Kann Defense: Tartakower Variation | |
| Dec 21, 2024 | Clarke | * | Oragwu | Round 7: Clarke, Niall - Oragwu, Chukwunonso | Philidor Defense | |
| Sep 1, 2024 | Clarke | 0–1 | Badacsonyi | Round 1: Clarke, Niall - Badacsonyi, Stanley | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| Sep 1, 2024 | Clarke | 0–1 | Patel | Round 3: Clarke, Niall - Patel, Zain | Modern Defense | |
| Sep 1, 2024 | Clarke | 0–1 | Sagues | Round 5: Clarke, Niall - Sagues, Vincent | Scandinavian Defense: Valencian Variation | |
| Sep 1, 2024 | Clarke | 0–1 | Han | Round 8: Clarke, Niall - Han, Yichen | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| Sep 1, 2024 | Dunn | 0–1 | Clarke | Round 2: Dunn, Maxim - Clarke, Niall | Catalan Opening: Closed | |
| Sep 1, 2024 | Kirupakaran | 0–1 | Clarke | Round 4: Kirupakaran, Vishnu - Clarke, Niall | Anderssen's Opening | |
| Sep 1, 2024 | Brennan | 0–1 | Clarke | Round 6: Brennan, Henry - Clarke, Niall | Rapport-Jobava System | |
| Sep 1, 2024 | Clery | 0–1 | Clarke | Round 7: Clery, Liam - Clarke, Niall | Bishop's Opening: Vienna Hybrid | |
| Sep 1, 2024 | Mozaffari | 1–0 | Clarke | Round 9: Mozaffari, Mohammad Hossein - Clarke, Niall | Italian Game: Evans Gambit, McDonnell Defense, Main Line | |
| Nov 13, 2021 | Clarke | 1–0 | Murawski | English Under 18 and Under 16 Blitz | Italian Game: Giuoco Pianissimo | |
| Nov 13, 2021 | Clarke | 1–0 | Dicen | English Under 18 and Under 16 Blitz | Sicilian Defense: Accelerated Dragon, Modern Variation | |
| Nov 13, 2021 | Clarke | 0–1 | Walker | English Under 18 and Under 16 Blitz | Scotch Game: Modern Defense | |
| Nov 13, 2021 | Clarke | 0–1 | Sanger | English Under 18 and Under 16 Blitz | Sicilian Defense: Classical Variation | |
| Nov 13, 2021 | Clarke | ½–½ | Sheikh | English Under 18 and Under 16 Blitz | Sicilian Defense: Paulsen-Basman Defense | |
| Nov 13, 2021 | Badacsonyi | 1–0 | Clarke | English Under 18 and Under 16 Blitz | Trompowsky Attack | |
| Nov 13, 2021 | Vyas | 0–1 | Clarke | English Under 18 and Under 16 Blitz | Ruy Lopez: Berlin Defense | |
| Nov 13, 2021 | Ismail | 0–1 | Clarke | English Under 18 and Under 16 Blitz | King's Indian Attack | |
| Nov 13, 2021 | Jenkins | 0–1 | Clarke | English Under 18 and Under 16 Blitz | Ruy Lopez: Berlin Defense, Improved Steinitz Defense | |
