| Jun 1, 2026 | Keith | 1–0 | Hettiarachchi | 48th Trusts Open 2026 | Queen's Indian Defense: Kasparov-Petrosian Variation, Marco Defense | |
| Jun 1, 2026 | Le Grange | 0–1 | Hettiarachchi | 48th Trusts Open 2026 | Catalan Opening: Closed | |
| May 31, 2026 | Hettiarachchi | 0–1 | Park-Tamati | 48th Trusts Open 2026 | Sicilian Defense: Closed | |
| May 31, 2026 | Sun | ½–½ | Hettiarachchi | 48th Trusts Open 2026 | French Defense: Chigorin Variation | |
| May 30, 2026 | Hettiarachchi | 0–1 | Langford | 48th Trusts Open 2026 | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| May 29, 2026 | Tew | ½–½ | Hettiarachchi | 48th Trusts Open 2026 | Nimzo-Indian Defense | |
| Apr 9, 2026 | Hettiarachchi | 0–1 | Xie | Open (U12- U20) | Sicilian Defense: Closed | |
| Mar 14, 2026 | Korolev | 0–1 | Hettiarachchi | Round 5: Korolev, Maksim - Hettiarachchi, Buthsara | French Defense: Wing Gambit | |
| Mar 7, 2026 | Wong | 0–1 | Hettiarachchi | ADW March 2026 | Nimzo-Indian Defense: Classical Variation, Berlin Variation | |
| Mar 6, 2026 | Hettiarachchi | 1–0 | Li | Round 1: Hettiarachchi, Buthsara - Li, Olivia | Ruy Lopez: Classical Variation | |
| Mar 6, 2026 | Hettiarachchi | ½–½ | Ang | Round 6: Hettiarachchi, Buthsara - Ang, Alphaeus Wei Ern | Modern Defense | |
| Sep 14, 2025 | Hettiarachchi | 1–0 | Sun | Round 8: Hettiarachchi, Buthsara - Sun, Oliver | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| Sep 13, 2025 | Aidan Prince | 0–1 | Hettiarachchi | Round 7: Aidan Prince - Hettiarachchi, Buthsara | Indian Defense: London System | |
| Sep 13, 2025 | Hettiarachchi | 1–0 | Zhao | Round 6: Hettiarachchi, Buthsara - Zhao, Rebecca | Ruy Lopez: Closed | |
| Sep 5, 2025 | Hettiarachchi | 0–1 | Ang | Round 2: Hettiarachchi, Buthsara - Ang, Alphaeus Wei Ern | Pirc Defense | |
| Jul 20, 2025 | Korolev | 0–1 | Hettiarachchi | ADW July 2025 | Pirc Defense: Classical Variation | |
| Jul 19, 2025 | Jiang | 1–0 | Hettiarachchi | ACC Winter Cup 2025 | Queen's Indian Defense: Classical Variation, Polugaevsky Gambit | |
| Jul 19, 2025 | Hettiarachchi | ½–½ | Fabay | ACC Winter Cup 2025 | Sicilian Defense: Grand Prix Attack | |
| Jul 12, 2025 | Hoang | 0–1 | Hettiarachchi | ADW July 2025 | Indian Defense | |
| Jul 12, 2025 | Hettiarachchi | ½–½ | Fang | ADW July 2025 | Sicilian Defense: Closed | |
| Jul 11, 2025 | Sun | 0–1 | Hettiarachchi | ADW July 2025 | Bird Opening: Dutch Variation | |
| Jul 7, 2025 | Hettiarachchi | 1–0 | Zhou | North Island Chess Championships 2025 | Sicilian Defense: Closed | |
| Jul 6, 2025 | Ross | 1–0 | Hettiarachchi | North Island Chess Championships 2025 | French Defense: Exchange Variation | |
| Jul 5, 2025 | Hettiarachchi | ½–½ | Smith | Round 5: Hettiarachchi, Buthsara - Smith, Robert W | Modern Defense: Three Pawns Attack | |
| Jul 5, 2025 | Hettiarachchi | 0–1 | Hettiarachchi | North Island Chess Championships 2025 | French Defense: Exchange Variation | |
| Jul 4, 2025 | Ang | 1–0 | Hettiarachchi | Round 2: Ang, Alphaeus Wei Ern - Hettiarachchi, Buthsara | Bogo-Indian Defense: Grünfeld Variation | |
| Jul 4, 2025 | Hettiarachchi | 1–0 | Guo | North Island Chess Championships 2025 | French Defense: Advance Variation, Main Line | |
| Jun 28, 2025 | Hettiarachchi | 0–1 | Xie | ACA Blitz Interclubs 2025 | Caro-Kann Defense | |
| Jun 28, 2025 | Hettiarachchi | 0–1 | Mao | ACA Blitz Interclubs 2025 | French Defense: Advance Variation, Euwe Variation | |
| Jun 27, 2025 | Jin | 1–0 | Hettiarachchi | ACA Blitz Interclubs 2025 | Indian Defense: Anti-Nimzo-Indian | |
| Jun 27, 2025 | Hettiarachchi | ½–½ | Ang | ACA Blitz Interclubs 2025 | Scandinavian Defense: Mieses-Kotroc Variation | |
| Jun 22, 2025 | Wright | ½–½ | Hettiarachchi | Peter Stuart Memorial Open 2025 | Bogo-Indian Defense: Exchange Variation | |
| Jun 21, 2025 | Hettiarachchi | ½–½ | Hwang | Peter Stuart Memorial Open 2025 | Sicilian Defense: Grand Prix Attack | |
| Jun 21, 2025 | Fabay | ½–½ | Hettiarachchi | Peter Stuart Memorial Open 2025 | French Defense: Exchange Variation | |
| Jun 20, 2025 | Hettiarachchi | ½–½ | Pei | Peter Stuart Memorial Open 2025 | Sicilian Defense: Grand Prix Attack | |
| Jun 19, 2025 | Hettiarachchi | 1–0 | Aidan Prince | Peter Stuart Memorial Open 2025 | Ruy Lopez: Classical Variation | |
| Jun 17, 2025 | Ang | 1–0 | Hettiarachchi | Peter Stuart Memorial Open 2025 | Nimzo-Indian Defense: Sämisch Variation | |
| Jun 9, 2025 | Po`e-Tofaeono | 1–0 | Hettiarachchi | ACC Autumn Rapid 2025 | English Opening: King's English Variation, Reversed Closed Sicilian | |
| Jun 1, 2025 | Young | 1–0 | Hettiarachchi | Round 4: Young, Cohen - Hettiarachchi, Buthsara | French Defense: Winawer Variation, Advance Variation | |
| May 31, 2025 | Hettiarachchi | ½–½ | Zhang | Round 3: Hettiarachchi, Buthsara - Zhang, Kendrick Botong | Sicilian Defense: Grand Prix Attack | |
| May 31, 2025 | Hettiarachchi | 1–0 | Lu | Round 2: Hettiarachchi, Buthsara - Lu, Xiahan (Luna) | French Defense: Advance Variation, Euwe Variation | |
| May 30, 2025 | Yu | ½–½ | Hettiarachchi | Round 1: Yu, Zachary - Hettiarachchi, Buthsara | Bogo-Indian Defense: Grünfeld Variation | |
| May 26, 2025 | Tew | 1–0 | Hettiarachchi | ACC Autumn Rapid 2025 | Nimzo-Indian Defense | |
| May 17, 2025 | Korolev | 0–1 | Hettiarachchi | ACC Double Weekends May 2025 | French Defense: Exchange Variation, Monte Carlo Variation | |
| May 17, 2025 | Hettiarachchi | 1–0 | Ha | ACC Double Weekends May 2025 | Sicilian Defense: Grand Prix Attack | |
| May 11, 2025 | Baker | 1–0 | Hettiarachchi | ACC Double Weekends May 2025 | Nimzo-Indian Defense: Normal Variation | |
| May 10, 2025 | Hettiarachchi | ½–½ | Somaraju | ACC Double Weekends May 2025 | Sicilian Defense: Closed | |
| May 6, 2025 | Hettiarachchi | 0–1 | Ang | ACC Double Weekends May 2025 | Nimzowitsch Defense: Williams Variation | |
| Jan 12, 2025 | Hettiarachchi | 0–1 | Stark | Round 8: Hettiarachchi, Buthsara - Stark, John | Caro-Kann Defense: Advance Variation | |
| Jan 11, 2025 | Mao | 1–0 | Hettiarachchi | Round 3: Mao, Daqi - Hettiarachchi, Buthsara | Queen's Indian Defense: Spassky System | |
| Oct 6, 2024 | Hettiarachchi | 0–1 | Mao | ACC Blitz and Rapid October Rapid 2024 | Queen's Gambit Declined: Harrwitz Attack | |
| Oct 6, 2024 | Hettiarachchi | ½–½ | Ha | ACC Blitz and Rapid October Rapid 2024 | Scandinavian Defense: Valencian Variation | |
| Oct 6, 2024 | Hettiarachchi | ½–½ | Hwang | ACC Blitz and Rapid October Rapid 2024 | Sicilian Defense: Grand Prix Attack | |
| Oct 6, 2024 | Li | 0–1 | Hettiarachchi | ACC Blitz and Rapid October Rapid 2024 | Owen Defense | |
| Oct 5, 2024 | Hettiarachchi | ½–½ | Lin | ACC Blitz and Rapid October Rapid 2024 | Sicilian Defense: Grand Prix Attack | |
| Oct 5, 2024 | Jin | ½–½ | Hettiarachchi | ACC Blitz and Rapid October Rapid 2024 | English Opening: Agincourt Defense | |
| Jul 14, 2024 | Hettiarachchi | ½–½ | Somaraju | ACC Blitz and Rapid July Rapid 2024 | Caro-Kann Defense: Advance Variation | |
| Jul 14, 2024 | Li | 0–1 | Hettiarachchi | ACC Blitz and Rapid July Rapid 2024 | Queen's Pawn Game: Colle System, Anti-Colle | |
| Jul 14, 2024 | Welikala | 0–1 | Hettiarachchi | ACC Blitz and Rapid July Rapid 2024 | French Defense: Exchange Variation | |
| Jul 13, 2024 | Hettiarachchi | 1–0 | Han | ACC Blitz and Rapid July Blitz 2024 | Ruy Lopez | |
| Jul 13, 2024 | Hettiarachchi | 0–1 | Nailon | ACC Blitz and Rapid July Blitz 2024 | Nimzo-Larsen Attack: Classical Variation | |
| Jul 13, 2024 | Hettiarachchi | 1–0 | Welikala | ACC Blitz and Rapid July Blitz 2024 | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| Jul 13, 2024 | Hettiarachchi | 1–0 | Leon | ACC Blitz and Rapid July Blitz 2024 | Sicilian Defense: Closed | |
| Jul 13, 2024 | Hettiarachchi | ½–½ | Wang | ACC Blitz and Rapid July Blitz 2024 | French Defense: Advance Variation, Paulsen Attack | |
| Jul 13, 2024 | Hettiarachchi | 0–1 | Wang | ACC Blitz and Rapid July Rapid 2024 | Sicilian Defense: Grand Prix Attack | |
| Jul 13, 2024 | Hettiarachchi | 1–0 | Harris | ACC Blitz and Rapid July Rapid 2024 | Ruy Lopez: Berlin Defense, Improved Steinitz Defense | |
| Jul 13, 2024 | Nguyen | 0–1 | Hettiarachchi | ACC Blitz and Rapid July Blitz 2024 | Owen Defense | |
| Jul 13, 2024 | Vasudeva | ½–½ | Hettiarachchi | ACC Blitz and Rapid July Blitz 2024 | Semi-Slav Defense: Main Line | |
| Jul 13, 2024 | Hettiarachchi | 0–1 | Hettiarachchi | ACC Blitz and Rapid July Blitz 2024 | French Defense: Advance Variation, Milner-Barry Gambit | |
| Jul 13, 2024 | Ha | 0–1 | Hettiarachchi | ACC Blitz and Rapid July Blitz 2024 | English Opening: Agincourt Defense, Kurajica Defense | |
| Jul 13, 2024 | Yu | 0–1 | Hettiarachchi | ACC Blitz and Rapid July Rapid 2024 | French Defense: Exchange Variation | |
| Jun 16, 2024 | Hettiarachchi | 0–1 | Aidan | ACC Blitz and Rapid June Rapid 2024 | Ruy Lopez: Steinitz Defense | |
| Jun 16, 2024 | Hettiarachchi | 0–1 | Wang | ACC Blitz and Rapid June Rapid 2024 | French Defense: Advance Variation, Paulsen Attack | |
| Jun 16, 2024 | Wang | 0–1 | Hettiarachchi | ACC Blitz and Rapid June Rapid 2024 | French Defense: Advance Variation, Paulsen Attack | |
| Jun 15, 2024 | Hettiarachchi | 1–0 | Lau | ACC Blitz and Rapid June Blitz 2024 | Sicilian Defense: Grand Prix Attack | |
| Jun 15, 2024 | Hettiarachchi | 1–0 | Jiang | ACC Blitz and Rapid June Blitz 2024 | Pirc Defense | |
| Jun 15, 2024 | Hettiarachchi | 0–1 | Jin | ACC Blitz and Rapid June Blitz 2024 | Sicilian Defense: Grand Prix Attack | |
| Jun 15, 2024 | Hettiarachchi | 0–1 | Ha | ACC Blitz and Rapid June Rapid 2024 | Ruy Lopez: Closed, Martinez Variation | |
| Jun 15, 2024 | Hettiarachchi | 0–1 | Hettiarachchi | ACC Blitz and Rapid June Blitz 2024 | French Defense: Advance Variation, Paulsen Attack | |
| Jun 15, 2024 | Nailon | 1–0 | Hettiarachchi | ACC Blitz and Rapid June Blitz 2024 | Semi-Slav Defense: Accelerated Move Order | |
| Jun 15, 2024 | Wang | 1–0 | Hettiarachchi | ACC Blitz and Rapid June Blitz 2024 | French Defense: Exchange Variation | |
| Jun 15, 2024 | Leon | 0–1 | Hettiarachchi | ACC Blitz and Rapid June Blitz 2024 | French Defense: Advance Variation, Paulsen Attack | |
| Jun 15, 2024 | Han | 0–1 | Hettiarachchi | ACC Blitz and Rapid June Blitz 2024 | French Defense: Exchange Variation | |
| Jun 15, 2024 | Nguyen | 0–1 | Hettiarachchi | ACC Blitz and Rapid June Rapid 2024 | Owen Defense | |
| Jun 15, 2024 | Andersen | ½–½ | Hettiarachchi | ACC Blitz and Rapid June Rapid 2024 | Semi-Slav Defense: Main Line | |
| Jun 11, 2024 | Hettiarachchi | 0–1 | Ang | Round 2: Hettiarachchi, Buthsara - Ang, Alphaeus Wei Ern | Modern Defense | |
| May 11, 2024 | Hettiarachchi | 0–1 | McDonald | Round 6: Hettiarachchi, Buthsara - McDonald, Duncan | Sicilian Defense: Grand Prix Attack | |
| May 11, 2024 | Guo | 1–0 | Hettiarachchi | Round 3: Guo, Benjamin - Hettiarachchi, Buthsara | Rapport-Jobava System, with e6 | |
| May 11, 2024 | Hettiarachchi | 1–0 | Jashari | Round 2: Hettiarachchi, Buthsara - Jashari, Xhevdet | Scandinavian Defense: Kloosterboer Gambit | |
| May 10, 2024 | Zhou | 1–0 | Hettiarachchi | Round 8: Zhou, Martin - Hettiarachchi, Buthsara | French Defense: Exchange Variation | |
| May 10, 2024 | Huang | 1–0 | Hettiarachchi | Round 6: Huang, Ziyi - Hettiarachchi, Buthsara | French Defense: Winawer Variation | |
| May 10, 2024 | McDonald | 1–0 | Hettiarachchi | Round 5: McDonald, Duncan - Hettiarachchi, Buthsara | French Defense: Tarrasch Variation, Open System, Advance Line | |
| Apr 29, 2024 | Hettiarachchi | ½–½ | Sole | Round 4: Hettiarachchi, Buthsara - Sole, Michael D | Ruy Lopez: Morphy Defense, Steinitz Deferred | |
| Apr 27, 2024 | Liu | 0–1 | Hettiarachchi | Round 5: Liu, Richard Jingjie - Hettiarachchi, Buthsara | French Defense: Advance Variation, Paulsen Attack | |
| Apr 25, 2024 | Ang | 1–0 | Hettiarachchi | Round 3: Ang, Alphaeus Wei Ern - Hettiarachchi, Buthsara | Queen's Gambit Accepted: Old Variation | |
| Apr 15, 2024 | Hettiarachchi | ½–½ | Po`e-Tofaeono | Round 2: Hettiarachchi, Buthsara - Po`e-Tofaeono, Grayson | Ruy Lopez: Morphy Defense, Graz Variation | |
| Apr 14, 2024 | Ang | 1–0 | Hettiarachchi | Round 8: Ang, Alphaeus Wei Ern - Hettiarachchi, Buthsara | Semi-Slav Defense: Marshall Gambit | |
| Apr 12, 2024 | Feng | 1–0 | Hettiarachchi | Round 4: Feng, Sophia - Hettiarachchi, Buthsara | Semi-Slav Defense: Accelerated Move Order | |
| Apr 12, 2024 | Hettiarachchi | 0–1 | Huang | Round 3: Hettiarachchi, Buthsara - Huang, Ziyu | Caro-Kann Defense: Advance Variation, Short Variation | |
| Apr 12, 2024 | Lau | 0–1 | Hettiarachchi | Round 2: Lau, Great Boyou - Hettiarachchi, Buthsara | French Defense: Winawer Variation, Alekhine Gambit Accepted | |