| Jun 19, 2026 | Mehta | 1–0 | Dissanayake | 26BHClubChamp | Slav Defense: Exchange Variation | |
| Jun 12, 2026 | Dissanayake | 1–0 | Wu | 26BHClubChamp | Torre Attack: Fianchetto Defense | |
| May 29, 2026 | Dissanayake | 1–0 | Katakam | 26BHClubChamp | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| May 15, 2026 | Dissanayake | 1–0 | Fazel | 26BHClubChamp | Queen's Gambit Accepted: Accelerated Mannheim Variation | |
| Apr 18, 2026 | Charters | 1–0 | Dissanayake | 2026 Melbourne International Open - Amateurs | Caro-Kann Defense: Exchange Variation | |
| Apr 17, 2026 | Testolin | 0–1 | Dissanayake | 2026 Melbourne International Open - Rapid | Nimzo-Larsen Attack: Classical Variation | |
| Apr 17, 2026 | Dissanayake | 1–0 | Khanchandani | 2026 Melbourne International Open - Rapid | Dutch Defense: Classical Variation | |
| Apr 17, 2026 | Antonio | 1–0 | Dissanayake | 2026 Melbourne International Open - Rapid | Caro-Kann Defense: Two Knights Attack | |
| Apr 17, 2026 | Dissanayake | 1–0 | Ramakrishnan | 2026 Melbourne International Open - Rapid | Queen's Gambit Declined | |
| Apr 17, 2026 | Nguyen Thi Mai Hung | 1–0 | Dissanayake | 2026 Melbourne International Open - Rapid | Queen's Pawn Game: London System | |
| Apr 17, 2026 | Dissanayake | 1–0 | Tan | 2026 Melbourne International Open - Rapid | King's Indian Defense: Fianchetto Variation, Classical Fianchetto | |
| Apr 17, 2026 | Culbert | ½–½ | Dissanayake | 2026 Melbourne International Open - Rapid | Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation, Chelyabinsk Variation | |
| Apr 14, 2026 | Culbert | 1–0 | Dissanayake | 2026 Melbourne International Open - Amateurs | Caro-Kann Defense: Panov Attack | |
| Apr 13, 2026 | Wang | * | Dissanayake | 2026 Melbourne International Open - Amateurs | ? | |
| Mar 20, 2026 | Deng | 0–1 | Dissanayake | 2026 Box Hill Summer Cup | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Mar 13, 2026 | Dissanayake | 1–0 | Mondal | 2026 Box Hill Summer Cup | Queen's Pawn Game: Zukertort Variation | |
| Feb 27, 2026 | Deng | ½–½ | Dissanayake | 2026 Box Hill Summer Cup | Caro-Kann Defense: Exchange Variation | |
| Feb 20, 2026 | Dissanayake | 1–0 | Fan | 2026 Box Hill Summer Cup | Queen's Pawn Game: Torre Attack | |
| Feb 13, 2026 | Datar | * | Dissanayake | 2026 Box Hill Summer Cup | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| Jul 25, 2025 | Majety | 0–1 | Dissanayake | 25BHWinterSwiss | English Opening: Caro-Kann Defensive System | |
| Jul 11, 2025 | Dissanayake | 0–1 | Testolin | 25BHWinterSwiss | Queen's Gambit Declined | |
| Jun 20, 2025 | Kalina | ½–½ | Dissanayake | 2025 Box Hill Chess Club Championship | Caro-Kann Defense: Tartakower Variation | |
| Jun 13, 2025 | Dissanayake | 1–0 | Jathar | 2025 Box Hill Chess Club Championship | Catalan Opening: Open Defense, Classical Line | |
| May 30, 2025 | Raine | ½–½ | Dissanayake | 2025 Box Hill Chess Club Championship | Réti Opening: Anglo-Slav Variation, Bogoljubow Variation | |
| May 2, 2025 | Dissanayake | 0–1 | Huang | 2025 Box Hill Chess Club Championship | Catalan Opening: Closed | |
| Jan 25, 2025 | Dissanayake | 0–1 | Shen | 2025 Oceania Zonal 3.6 | Queen's Gambit Declined | |
| Jan 10, 2025 | Hua | 0–1 | Dissanayake | 2024 Australian Open - Minor | Caro-Kann Defense: Two Knights Attack | |
| Jan 4, 2025 | Dissanayake | ½–½ | Rigney | 2024 Australian Open - Minor | King's Indian Defense: Fianchetto Variation, Uhlmann-Szabo System | |
| Dec 29, 2024 | Dissanayake | 0–1 | Thogata | 2024 Canterbury Summer Swiss | Grünfeld Defense: Three Knights Variation | |
| — | Dissanayake | 0–1 | He | 25BHWinterSwiss | Neo-Grünfeld Defense: Delayed Exchange Variation | |
| — | Dissanayake | 1–0 | Kolak | 25BHWinterSwiss | Queen's Gambit Declined | |
| — | Gupta | * | Dissanayake | 25BHWinterSwiss | Caro-Kann Defense: Panov Attack, Modern Defense, Mieses Line | |