| Mar 8, 2026 | Kothari | * | Gunarathne | English Youth Championships. Top boards per section. | Sicilian Defense: Closed | |
| Mar 8, 2026 | Gunarathne | 0–1 | Pereslavtsev | English Youth Championships. Top boards per section. | Sicilian Defense: Kan Variation, Maróczy Bind, Réti Variation | |
| Feb 14, 2026 | Crawford | 1–0 | Gunarathne | Round 2: Crawford, Owen - Gunarathne, Senith Thenula | Sicilian Defense: Najdorf Variation | |
| Feb 13, 2026 | Gunarathne | ½–½ | Verbytski | Round 1: Gunarathne, Senith Thenula - Verbytski, Oleg | Sicilian Defense: Kalashnikov Variation | |
| Oct 31, 2025 | Miller | 0–1 | Gunarathne | ECF Coventry International 2025 | ? | |
| Oct 30, 2025 | Gunarathne | 0–1 | Sasikumar | ECF Coventry International 2025 | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| Oct 30, 2025 | Gunarathne | 0–1 | Luk | ECF Coventry International 2025 | Caro-Kann Defense: Exchange Variation | |
| Oct 28, 2025 | Verbytski | ½–½ | Gunarathne | ECF Coventry International 2025 | Sicilian Defense: Najdorf Variation, Opocensky Variation | |
| Oct 27, 2025 | Gunarathne | 1–0 | Sandhu | ECF Coventry International 2025 | Sicilian Defense: Kan Variation, Maróczy Bind, Réti Variation | |
| Oct 27, 2025 | Hanache | 1–0 | Gunarathne | ECF Coventry International 2025 | Sicilian Defense: Najdorf Variation, Adams Attack | |
| Oct 26, 2025 | Gunarathne | 1–0 | Ireland | ECF Coventry International 2025 | Petrov's Defense: Damiano Variation, Kholmov Gambit | |
| Oct 26, 2025 | Vaidyanathan | 1–0 | Gunarathne | ECF Coventry International 2025 | Queen's Gambit Declined: Semi-Slav, Abrahams Variation | |
| Sep 7, 2025 | Gunarathne | 1–0 | Stephenson | Hull 4NCL Congress 2025 - Open section. | French Defense: Advance Variation | |
| Sep 7, 2025 | Birtwistle | 1–0 | Gunarathne | Hull 4NCL Congress 2025 - Open section. | Sicilian Defense: Delayed Alapin Variation, with d6 | |
| Sep 6, 2025 | Gunarathne | ½–½ | Zhang | Hull 4NCL Congress 2025 - Open section. | Sicilian Defense: Four Knights Variation | |
| Sep 6, 2025 | Ciuravin | 1–0 | Gunarathne | Hull 4NCL Congress 2025 - Open section. | Queen's Pawn Game: Accelerated London System, Steinitz Countergambit | |
| Jul 30, 2025 | Gunarathne | 0–1 | Malibiran | Round 5: Gunarathne, Senith Thenula - Malibiran, Alexis Kristoff | Sicilian Defense: Accelerated Dragon, Modern Bc4 Variation | |
| Jul 29, 2025 | Karthick | 0–1 | Gunarathne | Round 4: Karthick, Alagu Naachiappan - Gunarathne, Senith Thenula | Sicilian Defense: Grand Prix Attack | |
| Jul 29, 2025 | Lorigan | 1–0 | Gunarathne | Round 3: Lorigan, Maxim - Gunarathne, Senith Thenula | Semi-Slav Defense | |
| Jul 28, 2025 | Gunarathne | 0–1 | Murthy | Round 2: Gunarathne, Senith Thenula - Murthy, Arush | Scandinavian Defense: Marshall Variation | |
| Jul 28, 2025 | Ratcliffe | 0–1 | Gunarathne | Round 1: Ratcliffe, James - Gunarathne, Senith Thenula | Sicilian Defense: Alapin Variation | |
| Jul 20, 2025 | Burrows | 0–1 | Gunarathne | ECF English Open Championship 2025 | Sicilian Defense: Najdorf Variation, Adams Attack | |
| Jul 20, 2025 | Gunarathne | 1–0 | Schell | ECF English Open Championship 2025 | Caro-Kann Defense: Exchange Variation, Rubinstein Variation | |
| Jul 19, 2025 | Vaidyanathan | 0–1 | Gunarathne | ECF English Open Championship 2025 | Sicilian Defense: Closed, Traditional | |
| Jul 19, 2025 | Gunarathne | 0–1 | Norris | ECF English Open Championship 2025 | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| Jul 18, 2025 | Ellson | 0–1 | Gunarathne | ECF English Open Championship 2025 | Semi-Slav Defense: Accelerated Move Order | |
| Jul 18, 2025 | Gunarathne | 0–1 | Verbytski | ECF English Open Championship 2025 | Sicilian Defense: French Variation | |
| Jul 18, 2025 | Hanache | 1–0 | Gunarathne | ECF English Open Championship 2025 | Sicilian Defense: Moscow Variation | |
| 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 | Zhao | 1–0 | Gunarathne | Round 5: Zhao, George - Gunarathne, Senith Thenula | Dutch Defense: Classical Variation | |
| Jun 25, 2025 | Gunarathne | 0–1 | Vaidyanathan | Round 4: Gunarathne, Senith Thenula - Vaidyanathan, Adithya | Sicilian Defense: Accelerated Dragon, Modern Bc4 Variation | |
| Jun 25, 2025 | Makkar | 1–0 | Gunarathne | Round 3: Makkar, Rajat - Gunarathne, Senith Thenula | English Opening: Agincourt Defense | |
| Jun 25, 2025 | Andrew Lo | 0–1 | Gunarathne | Round 2: Andrew Lo - Gunarathne, Senith Thenula | Dutch Defense: Queen's Knight Variation | |
| Jun 25, 2025 | Gunarathne | 1–0 | Verma | Round 1: Gunarathne, Senith Thenula - Verma, Shlok | French Defense: Advance Variation, Main Line | |
| Apr 21, 2025 | Gunarathne | ½–½ | Sullivan | Round 6: Gunarathne, Senith Thenula - Sullivan, Daniel | Caro-Kann Defense: Exchange Variation | |
| Apr 21, 2025 | Cox | 1–0 | Gunarathne | Round 7: Cox, Tristan A - Gunarathne, Senith Thenula | Dutch Defense: Hopton Attack | |
| Apr 20, 2025 | Gunarathne | ½–½ | De Silva | Round 4: Gunarathne, Senith Thenula - De Silva, Sithun | Sicilian Defense: Accelerated Dragon, Modern Bc4 Variation | |
| Apr 20, 2025 | Potter | ½–½ | Gunarathne | Round 5: Potter, John M - Gunarathne, Senith Thenula | Sicilian Defense: Najdorf Variation | |
| Apr 19, 2025 | Gunarathne | 1–0 | Li | Round 2: Gunarathne, Senith Thenula - Li, Reya | Italian Game: Giuoco Pianissimo, Canal Variation | |
| Apr 19, 2025 | Willmoth | 1–0 | Gunarathne | Round 3: Willmoth, Robert F - Gunarathne, Senith Thenula | Dutch Defense: Stonewall Variation, Modern Variation | |
| Jan 19, 2025 | Gunarathne | 1–0 | Burke | 32nd 4NCL Congress | French Defense: Exchange Variation | |
| Jan 19, 2025 | Doran | ½–½ | Gunarathne | 32nd 4NCL Congress | Sicilian Defense: Najdorf Variation, Main Line | |
| Jan 18, 2025 | Gunarathne | 0–1 | Sasikumar | 32nd 4NCL Congress | Sicilian Defense: Accelerated Dragon, Modern Bc4 Variation | |
| Jan 18, 2025 | Peart | 1–0 | Gunarathne | 32nd 4NCL Congress | Sicilian Defense: Alapin Variation | |
| Jan 17, 2025 | Gunarathne | ½–½ | Quaite | 32nd 4NCL Congress | Four Knights Game: Italian Variation | |
| Sep 22, 2024 | Wong | 1–0 | Gunarathne | 2024 UK Chess Challenge Terafinal Challengers U14 | Dutch Defense: Hopton Attack | |
| Sep 21, 2024 | Gunarathne | 0–1 | Ding | 2024 UK Chess Challenge Terafinal Challengers U14 | Sicilian Defense: Najdorf Variation | |
| Sep 21, 2024 | Ganti | 1–0 | Gunarathne | 2024 UK Chess Challenge Terafinal Challengers U14 | Sicilian Defense: Najdorf Variation | |
| Sep 21, 2024 | Luk | 1–0 | Gunarathne | 2024 UK Chess Challenge Terafinal Challengers U14 | Dutch Defense | |
| Aug 3, 2024 | Kumar | 0–1 | Gunarathne | Round 7: Kumar, Arnav - Gunarathne, Senith Thenula | Sicilian Defense: Najdorf Variation, English Attack | |
| Aug 2, 2024 | Gunarathne | 0–1 | Freeman | Round 6: Gunarathne, Senith Thenula - Freeman, Luke | Sicilian Defense: Accelerated Dragon, Modern Bc4 Variation | |
| Jul 31, 2024 | Gunarathne | 1–0 | Taramov | Round 4: Gunarathne, Senith Thenula - Taramov, Magomed | Caro-Kann Defense: Exchange Variation, Rubinstein Variation | |
| Jul 29, 2024 | Gunarathne | 0–1 | Leung | Round 2: Gunarathne, Senith Thenula - Leung, Hao Ran | Caro-Kann Defense: Exchange Variation, Rubinstein Variation | |
| Jul 28, 2024 | Chu | 0–1 | Gunarathne | Round 1: Chu, Edward - Gunarathne, Senith Thenula | King's Indian Defense | |
| Jul 25, 2024 | Gunarathne | 1–0 | Lopez Henderson | Round 5: Gunarathne, Senith Thenula - Lopez Henderson, Kyle | Caro-Kann Defense: Panov Attack, Modern Defense, Mieses Line | |
| Jul 24, 2024 | Singhal | 0–1 | Gunarathne | Round 4: Singhal, Atharv - Gunarathne, Senith Thenula | King's Indian Defense: Normal Variation, Rare Defenses | |
| Jul 24, 2024 | Gunarathne | 1–0 | Malibiran | Round 3: Gunarathne, Senith Thenula - Malibiran, Alexis Kristoff | Sicilian Defense: Accelerated Dragon, Modern Bc4 Variation | |
| Jul 23, 2024 | Murthy | 0–1 | Gunarathne | Round 2: Murthy, Arush - Gunarathne, Senith Thenula | King's Indian Defense: Sämisch Variation | |
| Jul 23, 2024 | Mittal | 1–0 | Gunarathne | Round 1: Mittal, Aditya - Gunarathne, Senith Thenula | Sicilian Defense: Alapin Variation, Stoltz Attack | |
| Jun 28, 2024 | Kovalskyi | 1–0 | Gunarathne | Round 5: Kovalskyi, Roman - Gunarathne, Senith Thenula | Sicilian Defense: Najdorf Variation, English Attack | |
| Jun 28, 2024 | Gunarathne | 1–0 | Will Laver | Round 4: Gunarathne, Senith Thenula - Will Laver | Pirc Defense: Classical Variation, Schlechter Variation | |
| Jun 27, 2024 | Gunarathne | 0–1 | Korshunov | Round 3: Gunarathne, Senith Thenula - Korshunov, Sergey And. | Sicilian Defense: O'Kelly Variation, Normal System | |
| Jun 27, 2024 | Han | 1–0 | Gunarathne | Round 2: Han, Yichen - Gunarathne, Senith Thenula | Sicilian Defense: Taimanov Variation, Normal Variation | |
| Jun 26, 2024 | Xu | 0–1 | Gunarathne | Round 1: Xu, Weiming - Gunarathne, Senith Thenula | Sicilian Defense: Modern Variations | |
| Mar 3, 2024 | Gunarathne | 0–1 | Chedd | British Rapidplay - lower boards | Caro-Kann Defense: Panov Attack, Modern Defense | |
| Mar 3, 2024 | Middleton | 1–0 | Gunarathne | British Rapidplay Championship 2024 | Sicilian Defense: Delayed Alapin Variation, with d6 | |
| Mar 3, 2024 | Gunarathne | 0–1 | Sasikumar | British Rapidplay Championship 2024 | Sicilian Defense: Accelerated Dragon, Modern Variation | |
| Mar 3, 2024 | Robert T Killeen | ½–½ | Gunarathne | British Rapidplay Championship 2024 | Sicilian Defense: Najdorf Variation | |
| Mar 3, 2024 | Gunarathne | 0–1 | Keohane | British Rapidplay Championship 2024 | French Defense: Exchange Variation, Monte Carlo Variation | |
| Mar 2, 2024 | Broomfield | 0–1 | Gunarathne | British Rapidplay Championship 2024 | Sicilian Defense | |
| Mar 2, 2024 | Gunarathne | 1–0 | Keshari | British Rapidplay - lower boards | French Defense: Exchange Variation, Monte Carlo Variation | |
| Mar 2, 2024 | Hu | 1–0 | Gunarathne | British Rapidplay Championship 2024 | Sicilian Defense: Prins Variation | |
| Mar 2, 2024 | Gunarathne | 0–1 | Fraser-Mitchell | British Rapidplay Championship 2024 | Nimzowitsch Defense: Declined Variation | |
| Mar 2, 2024 | Butler | 0–1 | Gunarathne | British Rapidplay - lower boards | Polish Opening: Czech Defense | |
| Mar 2, 2024 | Gunarathne | 0–1 | Burrows | British Rapidplay Championship 2024 | Sicilian Defense: Najdorf Variation, Traditional Line | |
| Sep 8, 2024 | Gunarathne | ½–½ | He | Round 4: Gunarathne, Senith Thenula - He, Tom Junde | Italian Game: Giuoco Piano | |
| Sep 8, 2024 | Birtwistle | 1–0 | Gunarathne | Round 5: Birtwistle, Nigel - Gunarathne, Senith Thenula | Dutch Defense | |
| Sep 7, 2024 | Gunarathne | ½–½ | Cansdale | Round 2: Gunarathne, Senith Thenula - Cansdale, Zach | Caro-Kann Defense: Two Knights Attack, Mindeno Variation, Exchange Line | |
| Sep 7, 2024 | Alan Peart | 1–0 | Gunarathne | Round 3: Alan Peart - Gunarathne, Senith Thenula | Sicilian Defense: Closed, Traditional | |
| Aug 18, 2024 | Fallowfield | ½–½ | Gunarathne | Round 5: Fallowfield, Jeremy R - Gunarathne, Senith Thenula | Sicilian Defense: Grand Prix Attack | |
| Aug 1, 2024 | Lee | ½–½ | Gunarathne | Round 5: Lee, Yuk Hei - Gunarathne, Senith Thenula | Sicilian Defense: Closed, Traditional | |
| Jul 30, 2024 | Shi | 1–0 | Gunarathne | Round 3: Shi, Shaoquan - Gunarathne, Senith Thenula | King's Indian Defense: Kramer Variation | |
| Jul 29, 2023 | Gunarathne | 0–1 | Dairi | British Championships: Junior Under 12 | Sicilian Defense: Accelerated Dragon, Modern Variation | |
| Jul 28, 2023 | Gunarathne | 1–0 | Marsden | British Championships: Junior Under 12 | French Defense: Exchange Variation, Monte Carlo Variation | |
| Jul 28, 2023 | Lukhi | 0–1 | Gunarathne | British Championships: Junior Under 12 | Indian Defense | |
| Jul 27, 2023 | Gunarathne | 0–1 | Vaidyanathan | British Championships: Junior Under 12 | Sicilian Defense: Dragon Variation, Yugoslav Attack, Main Line | |
| Jul 26, 2023 | Gunarathne | 1–0 | Chandrashekhar | British Championships: Junior Under 12 | Philidor Defense: Albin-Blackburne Gambit | |
| Jul 26, 2023 | Nguyen | 0–1 | Gunarathne | British Championships: Junior Under 12 | Sicilian Defense: Najdorf Variation, English Attack | |
| Jul 25, 2023 | Gomez | 0–1 | Gunarathne | British Championships: Junior Under 12 | English Opening: Anglo-Indian Defense, Queen's Knight Variation | |
| Apr 10, 2023 | Gunarathne | 0–1 | Lewis | 3rd 4NCL Easter Congress: U2000 | Alekhine Defense: Exchange Variation | |
| Apr 10, 2023 | Gunarathne | 0–1 | Morrish | 3rd 4NCL Easter Congress: U2000 | Sicilian Defense: Dragon Variation, Yugoslav Attack, Belezky Line | |
| Apr 9, 2023 | Gunarathne | 0–1 | Acharya | 3rd 4NCL Easter Congress: U2000 | Sicilian Defense: Open | |
| Apr 8, 2023 | Gunarathne | 0–1 | Jackson | 3rd 4NCL Easter Congress: U2000 | Sicilian Defense: Dragon Variation, Yugoslav Attack, Old Line | |
| Apr 8, 2023 | Anderson | 1–0 | Gunarathne | 3rd 4NCL Easter Congress: U2000 | King's Indian Defense: Normal Variation, Standard Development | |
| Apr 7, 2023 | Neatherway | 0–1 | Gunarathne | 3rd 4NCL Easter Congress: U2000 | Sicilian Defense: Najdorf Variation, English Attack | |
| — | Chan | 1–0 | Gunarathne | 3rd 4NCL Easter Congress: U2000 | Sicilian Defense: Najdorf Variation, Opocensky Variation | |
| — | Gunarathne | ½–½ | Crawford | Round 2: Gunarathne, Senith Thenula - Crawford, Owen | Pirc Defense: Classical Variation, Quiet System | |
| — | Gunarathne | 1–0 | Ding | Round 2: Gunarathne, Senith Thenula - Ding, Yicheng | Sicilian Defense: Najdorf Variation, Browne Variation | |
| — | Gunarathne | 0–1 | Pert | Round 4: Gunarathne, Senith Thenula - Pert, Max | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| — | Gunarathne | ½–½ | Linton | Round 4: Gunarathne, Senith Thenula - Linton, Alexander | Sicilian Defense: French Variation | |