| Feb 4, 2024 | Irina Tetenkina | 1–0 | Oisin O'Cuilleanain | Round 5: Irina Tetenkina - Oisin O'Cuilleanain | King's Indian Attack: Symmetrical Defense | |
| Feb 4, 2024 | Oisin O'Cuilleanain | ½–½ | Lukian Hushpit | Round 4: Oisin O'Cuilleanain - Lukian Hushpit | Italian Game: Classical Variation, Giuoco Pianissimo, with d6 | |
| Feb 3, 2024 | Jonathan Pein | 0–1 | Oisin O'Cuilleanain | Round 3: Jonathan Pein - Oisin O'Cuilleanain | Sicilian Defense: Modern Variations | |
| Feb 3, 2024 | Ross Beatty | 0–1 | Oisin O'Cuilleanain | Round 2: Ross Beatty - Oisin O'Cuilleanain | King's Indian Attack: Symmetrical Defense | |
| Feb 2, 2024 | Oisin O'Cuilleanain | 0–1 | Sergey Beryozkin | Round 1: Oisin O'Cuilleanain - Sergey Beryozkin | Sicilian Defense: Closed, Traditional | |
| Jan 28, 2024 | Oisin O'Cuilleanain | ½–½ | Conor O'Donnell | Round 5: Oisin O'Cuilleanain - Conor O'Donnell | Caro-Kann Defense: Two Knights Attack, Mindeno Variation, Exchange Line | |
| Jan 28, 2024 | Andrey A. Ivanov | 0–1 | Oisin O'Cuilleanain | Round 4: Andrey A. Ivanov - Oisin O'Cuilleanain | Old Indian Defense: Ukrainian Variation | |
| Jan 27, 2024 | Ante Saric | 1–0 | Oisin O'Cuilleanain | Round 2: Ante Saric - Oisin O'Cuilleanain | King's Indian Defense: Fianchetto Variation, Larsen Defense | |
| Oct 15, 2023 | Oisin O'Cuilleanain | 1–0 | Luke Scott | Round 5: Oisin O'Cuilleanain - Luke Scott | Catalan Opening | |
| Oct 15, 2023 | Oisin O'Cuilleanain | 1–0 | Rustem Abdullayev | Round 4: Oisin O'Cuilleanain - Rustem Abdullayev | Sicilian Defense: French Variation | |
| Oct 15, 2023 | Lukian Hushpit | 0–1 | Oisin O'Cuilleanain | Round 1: Lukian Hushpit - Oisin O'Cuilleanain | King's Indian Defense: Exchange Variation | |
| Oct 15, 2023 | Zalan Nemeth | 1–0 | Oisin O'Cuilleanain | Round 3: Zalan Nemeth - Oisin O'Cuilleanain | Nimzo-Indian Defense: St. Petersburg Variation, Fischer Variation | |
| Oct 15, 2023 | Oisin O'Cuilleanain | ½–½ | Ben Sheahan | Round 2: Oisin O'Cuilleanain - Ben Sheahan | Catalan Opening | |
| Feb 19, 2023 | Kavin Venkatesan | 0–1 | Oisin O'Cuilleanain | Round 5: Kavin Venkatesan - Oisin O'Cuilleanain | Old Indian Defense: Ukrainian Variation | |
| Feb 19, 2023 | Oisin O'Cuilleanain | 0–1 | Petar Arnaudov | Round 4: Oisin O'Cuilleanain - Petar Arnaudov | Modern Defense: Standard Line | |
| Feb 18, 2023 | Yaroslav Dumansky | 0–1 | Oisin O'Cuilleanain | Round 3: Yaroslav Dumansky - Oisin O'Cuilleanain | King's Indian Defense: Normal Variation, King's Knight Variation | |
| Feb 18, 2023 | Oisin O'Cuilleanain | 1–0 | Colm Daly | Round 2: Oisin O'Cuilleanain - Colm Daly | Sicilian Defense: Taimanov Variation | |
| Jul 10, 2022 | Alexander Baburin | 1–0 | Oisin O'Cuilleanain | Round 9: Alexander Baburin - Oisin O'Cuilleanain | Neo-Grünfeld Defense: Classical Variation, Original Defense | |
| Jul 9, 2022 | Oisin O'Cuilleanain | 1–0 | Diana Mats | Round 8: Oisin O'Cuilleanain - Diana Mats | English Opening: Agincourt Defense, Neo-Catalan Declined | |
| Jul 8, 2022 | Tarun Kanyamarala | 1–0 | Oisin O'Cuilleanain | Round 7: Tarun Kanyamarala - Oisin O'Cuilleanain | Nimzo-Indian Defense: Normal Variation | |
| Jul 7, 2022 | Oisin O'Cuilleanain | 1–0 | Colm Daly | Round 6: Oisin O'Cuilleanain - Colm Daly | King's Indian Defense: Sämisch Variation | |
| Jul 6, 2022 | Alex Goss | 0–1 | Oisin O'Cuilleanain | Round 5: Alex Goss - Oisin O'Cuilleanain | Sicilian Defense: Delayed Alapin Variation, with e6 | |
| Jul 5, 2022 | Anthony Doyle | ½–½ | Oisin O'Cuilleanain | Round 4: Anthony Doyle - Oisin O'Cuilleanain | King's Indian Attack: Spassky Variation | |
| Jul 4, 2022 | Oisin O'Cuilleanain | 1–0 | John Kennedy | Round 3: Oisin O'Cuilleanain - John Kennedy | Queen's Gambit Declined: Tarrasch Defense, Pseudo-Tarrasch Bishop Attack | |
| Jul 3, 2022 | Oisin O'Cuilleanain | 0–1 | Peter Carroll | Round 2: Oisin O'Cuilleanain - Peter Carroll | Sicilian Defense: Moscow Variation | |
| Jul 2, 2022 | Jacob Flynn | ½–½ | Oisin O'Cuilleanain | Round 1: Jacob Flynn - Oisin O'Cuilleanain | King's Indian Attack: Spassky Variation | |
| May 1, 2022 | S. Anand Kumar | ½–½ | Oisin O'Cuilleanain | Round 5: S. Anand Kumar - Oisin O'Cuilleanain | Tarrasch Defense: Symmetrical Variation | |
| May 1, 2022 | Oisin O'Cuilleanain | ½–½ | Alexander Baburin | Round 4: Oisin O'Cuilleanain - Alexander Baburin | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Apr 30, 2022 | Oisin O'Cuilleanain | 1–0 | Manuel Cabanas Jimenez | Round 3: Oisin O'Cuilleanain - Manuel Cabanas Jimenez | English Opening: Anglo-Indian Defense, Anglo-Grünfeld Variation | |
| Apr 30, 2022 | Jason Liu | 0–1 | Oisin O'Cuilleanain | Round 2: Jason Liu - Oisin O'Cuilleanain | Sicilian Defense: Najdorf Variation, Lipnitsky Attack | |
| Apr 29, 2022 | Oisin O'Cuilleanain | 0–1 | Evgeniya Doluhanova | Round 1: Oisin O'Cuilleanain - Evgeniya Doluhanova | Nimzo-Indian Defense: Classical Variation | |