| Jul 11, 2026 | Addagada | 1–0 | Hettiarachchi | Round 4: Addagada, Geetham - Hettiarachchi, Kisara | Rapport-Jobava System | |
| Jul 10, 2026 | Hettiarachchi | 0–1 | Chen | Round 3: Hettiarachchi, Kisara - Chen, Leo H | Italian Game: Classical Variation, Giuoco Pianissimo, with h6 | |
| Jul 10, 2026 | Wright | ½–½ | Hettiarachchi | Round 2: Wright, Caleb - Hettiarachchi, Kisara | Slav Defense | |
| Jul 10, 2026 | Langford | 1–0 | Hettiarachchi | Round 1: Langford, Joshua - Hettiarachchi, Kisara | French Defense: Advance Variation, Milner-Barry Gambit | |
| Jul 7, 2026 | Sun | 1–0 | Hettiarachchi | North Island Chess Championships 2026 | French Defense: Steinitz Variation, Boleslavsky Variation | |
| May 15, 2026 | Liang | 0–1 | Hettiarachchi | 2026 NSCC Autumn Tournament | Rapport-Jobava System, with e6 | |
| May 7, 2026 | Hettiarachchi | 1–0 | Huang | 2026 NSCC Autumn Tournament | Italian Game: Giuoco Pianissimo, Normal | |
| Apr 8, 2026 | Hu | 1–0 | Hettiarachchi | Open (U12- U20) | Queen's Gambit Declined | |
| Mar 21, 2026 | Hettiarachchi | 0–1 | Li | Round 7: Hettiarachchi, Kisara - Li, Olivia | Italian Game: Giuoco Pianissimo, Normal | |
| Mar 15, 2026 | Korolev | ½–½ | Hettiarachchi | Round 6: Korolev, Aleksei - Hettiarachchi, Kisara | French Defense: Wing Gambit | |
| Mar 7, 2026 | Sai Vishvajith Siddharthini S. | 0–1 | Hettiarachchi | Round 2: Sai Vishvajith Siddharthini S. - Hettiarachchi, Kisara | French Defense: Knight Variation | |
| Mar 6, 2026 | Ang | 1–0 | Hettiarachchi | Round 5: Ang, Alphaeus Wei Ern - Hettiarachchi, Kisara | Semi-Slav Defense: Marshall Gambit | |
| Mar 6, 2026 | Hettiarachchi | ½–½ | Korolev | ADW March 2026 | Nimzowitsch Defense: Declined Variation | |
| Sep 7, 2025 | Hettiarachchi | ½–½ | Wang | Round 4: Hettiarachchi, Kisara - Wang, Ethan Zhirui | Italian Game: Giuoco Pianissimo | |
| Sep 6, 2025 | Crack | 1–0 | Hettiarachchi | Round 3: Crack, Malcolm - Hettiarachchi, Kisara | French Defense: Tarrasch Variation, Closed Variation | |
| Jul 6, 2025 | Nicholls | 1–0 | Hettiarachchi | North Island Chess Championships 2025 | French Defense: Advance Variation, Main Line | |
| Jul 5, 2025 | Hettiarachchi | 0–1 | Hettiarachchi | North Island Chess Championships 2025 | French Defense: Exchange Variation | |
| Jul 4, 2025 | Archer | 1–0 | Hettiarachchi | Round 1: Archer, Ollie - Hettiarachchi, Kisara | Semi-Slav Defense: Accelerated Move Order | |
| Jul 4, 2025 | Willoughby-Ansell | 0–1 | Hettiarachchi | North Island Chess Championships 2025 | French Defense: Orthoschnapp Gambit | |
| May 17, 2025 | Preeyansh Roul | 1–0 | Hettiarachchi | ACC Double Weekends May 2025 | Dutch Defense: Leningrad Variation | |
| May 9, 2025 | Jin | 1–0 | Hettiarachchi | ACC Double Weekends May 2025 | French Defense: Tarrasch Variation, Pawn Center Variation | |
| Jan 11, 2025 | Hettiarachchi | ½–½ | Fulo | Round 1: Hettiarachchi, Kisara - Fulo, Nunilon III | Italian Game: Giuoco Pianissimo, Italian Four Knights Variation | |
| Jul 14, 2024 | Hettiarachchi | 0–1 | Welikala | ACC Blitz and Rapid July Rapid 2024 | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| Jul 13, 2024 | Hettiarachchi | 0–1 | Liu | ACC Blitz and Rapid July Blitz 2024 | Italian Game: Giuoco Pianissimo, Normal | |
| Jul 13, 2024 | Hettiarachchi | 0–1 | Hettiarachchi | ACC Blitz and Rapid July Blitz 2024 | French Defense: Advance Variation, Milner-Barry Gambit | |
| Jul 13, 2024 | Wang | 1–0 | Hettiarachchi | ACC Blitz and Rapid July Rapid 2024 | Petrov's Defense: Three Knights Game | |
| Jun 15, 2024 | Hettiarachchi | 0–1 | Hettiarachchi | ACC Blitz and Rapid June Blitz 2024 | French Defense: Advance Variation, Paulsen Attack | |
| Jun 15, 2024 | Hettiarachchi | 0–1 | Wheeler | ACC Blitz and Rapid June Blitz 2024 | French Defense: Advance Variation, Euwe Variation | |
| Jun 15, 2024 | Hettiarachchi | 0–1 | Jin | ACC Blitz and Rapid June Rapid 2024 | Sicilian Defense: Grand Prix Attack | |
| Jun 15, 2024 | Hettiarachchi | 0–1 | Lau | ACC Blitz and Rapid June Rapid 2024 | Sicilian Defense: Grand Prix Attack | |
| Jun 15, 2024 | Leon | 0–1 | Hettiarachchi | ACC Blitz and Rapid June Blitz 2024 | Ruy Lopez: Morphy Defense, Steinitz Deferred | |
| May 12, 2024 | Hettiarachchi | 0–1 | Lyall | ACC Blitz and Rapid May Rapid 2024 | Petrov's Defense: French Attack | |
| Apr 13, 2024 | De Guzman | 1–0 | Hettiarachchi | Round 1: De Guzman, Jessie - Hettiarachchi, Kisara | Italian Game: Giuoco Piano | |
| Apr 12, 2024 | Ang | 1–0 | Hettiarachchi | Round 1: Ang, Alphaeus Wei Ern - Hettiarachchi, Kisara | Scotch Game | |
| Mar 22, 2024 | Hettiarachchi | 0–1 | Guo | Round 1: Hettiarachchi, Kisara - Guo, Benjamin | Sicilian Defense: Grand Prix Attack | |
| — | Crack | 1–0 | Hettiarachchi | ADW August 2025 | French Defense: Tarrasch Variation, Closed Variation | |