| Feb 9, 2025 | Williamson | ½–½ | Kee | Blackpool Open 2025 | English Opening: Anglo-Dutch Defense | |
| Feb 9, 2025 | McAtear | ½–½ | Williamson | Blackpool Open 2025 | Italian Game: Classical Variation, Greco Gambit, Anderssen Variation | |
| Feb 9, 2025 | McAtear | ½–½ | Williamson | Blackpool Chess Congress 2025: FIDE Open | Italian Game: Classical Variation, Greco Gambit, Anderssen Variation | |
| Feb 8, 2025 | Williamson | ½–½ | Mulay | Blackpool Open 2025 | King's Indian Defense: Orthodox Variation, Glek Defense | |
| Feb 8, 2025 | Williamson | 1–0 | Bryant | Blackpool Open 2025 | Semi-Slav Defense | |
| Feb 7, 2025 | Doran | 0–1 | Williamson | Blackpool Open 2025 | French Defense: Tarrasch Variation, Modern System | |
| Feb 11, 2024 | Mulay | 0–1 | Williamson | Round 5: Mulay, Partha - Williamson, Roger G | English Opening: Agincourt Defense, Catalan Defense | |
| Feb 11, 2024 | Williamson | 0–1 | Clarke | Round 4: Williamson, Roger G - Clarke, Brandon GI | Grünfeld Defense: Three Knights Variation | |
| Feb 10, 2024 | Milson | 0–1 | Williamson | Round 3: Samuel A Milson - Roger G Williamson | French Defense: Steinitz Variation | |
| Aug 18, 2024 | Williamson | 1–0 | Savidge | Round 5: Williamson, Roger G - Savidge, Daniel | Queen's Pawn Game: Modern Defense | |
| Aug 18, 2024 | Ashton | 0–1 | Williamson | Round 4: Ashton, Alannah - Williamson, Roger G | French Defense: Advance Variation, Paulsen Attack | |
| Aug 17, 2024 | Williamson | ½–½ | Holm | Round 3: Williamson, Roger G - Holm, Kristian Stuvik | Sicilian Defense: Taimanov Variation, Bastrikov Variation, English Attack | |
| Aug 17, 2024 | Clucas | 0–1 | Williamson | Round 2: Clucas, Reg P - Williamson, Roger G | French Defense: Tarrasch Variation, Modern System | |
| Aug 16, 2024 | Williamson | 1–0 | Ernst Rindisbacher | Round 1: Williamson, Roger G - Ernst Rindisbacher | Dutch Defense: Classical Variation | |
| Aug 13, 2023 | Williamson | ½–½ | Morris | Newcastle-under-Lyme All-Play-All 2023 | Kangaroo Defense | |
| Aug 13, 2023 | Brown | 1–0 | Williamson | Newcastle-under-Lyme All-Play-All 2023 | Horwitz Defense | |
| Aug 12, 2023 | Williamson | ½–½ | Boswell | Newcastle-under-Lyme All-Play-All 2023 | King's Indian Defense: Orthodox Variation | |
| Aug 12, 2023 | Okhai | 0–1 | Williamson | Newcastle-under-Lyme All-Play-All 2023 | French Defense: Steinitz Variation, Boleslavsky Variation | |
| Aug 11, 2023 | Blackburn | 0–1 | Williamson | Newcastle-under-Lyme All-Play-All 2023 | Dutch Defense: Classical Variation | |
| Jan 22, 2023 | Williamson | 1–0 | Kryshtafor | 29th 4NCL Congress Open | Ruy Lopez: Open, Howell Attack | |
| Jan 22, 2023 | Shearsby | ½–½ | Williamson | 29th 4NCL Congress Open | Ruy Lopez: Morphy Defense, Steinitz Deferred | |
| Jan 21, 2023 | Williamson | ½–½ | Longson | 29th 4NCL Congress Open | Vienna Game: Vienna Gambit, Main Line | |
| Jan 21, 2023 | Doran | 0–1 | Williamson | 29th 4NCL Congress Open | Ruy Lopez: Morphy Defense, Steinitz Deferred | |
