| Sep 28, 2025 | Ong | 1–0 | Christie | South Island Rapid Chess Championships | Zukertort Opening: Black Mustang Defense | |
| Sep 28, 2025 | Lee | 1–0 | Ong | South Island Rapid Chess Championships | Nimzo-Larsen Attack: Modern Variation | |
| Sep 27, 2025 | Nedyhalov | 1–0 | Ong | Round 3: Nedyhalov, Olefsandr - Ong, Rommel | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Jul 14, 2024 | McNabb | 1–0 | Ong | Round 6: McNabb, Matthew David - Ong, Rommel | King's Indian Defense: Orthodox Variation, Bayonet Attack | |
| Jul 14, 2024 | Ong | ½–½ | Young | Round 5: Ong, Rommel - Young, Cohen | Sicilian Defense: Dragon Variation, Classical Variation, Normal Line | |
| Jul 13, 2024 | Ong | * | Gudoy | Round 2: Ong, Rommel - Gudoy, Paul | ? | |
| Jul 13, 2024 | Ong | 0–1 | Lee | Round 3: Ong, Rommel - Lee, Edward S | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| Jul 13, 2024 | Ong | 0–1 | Baker | Round 8: Ong, Rommel - Baker, Ilias Angelo (Leo) | Four Knights Game: Glek System | |
| Jul 12, 2024 | Ashton | ½–½ | Ong | Round 7: Ashton, Matthew - Ong, Rommel | Sicilian Defense: Najdorf Variation, Opocensky Variation | |
| Jul 12, 2024 | Ong | 1–0 | Muthukumaran | Round 6: Ong, Rommel - Muthukumaran, Sriram | Caro-Kann Defense: Advance Variation, Short Variation | |
| Jul 11, 2024 | Archer | 1–0 | Ong | Round 5: Archer, Ollie - Ong, Rommel | King's Indian Defense: Normal Variation, Standard Development | |
| Jul 11, 2024 | Barry | 0–1 | Ong | Round 4: Barry, Jacob - Ong, Rommel | King's Indian Defense: Normal Variation, King's Knight Variation | |
| Jul 10, 2024 | Ong | * | Van Heerden | Round 3: Ong, Rommel - Van Heerden, Giann | ? | |
