| Sep 7, 2025 | Sullivan | ½–½ | Clark | Hull 4NCL Congress 2025 - Open section. | English Opening: King's English Variation, Four Knights Variation, Fianchetto Line, with Nb6 | |
| Sep 7, 2025 | Clark | 0–1 | Ganti | Hull 4NCL Congress 2025 - Open section. | Sicilian Defense: Nimzowitsch Variation, Closed Variation | |
| Sep 6, 2025 | Clark | 0–1 | Nelson | Hull 4NCL Congress 2025 - Open section. | English Opening: King's English Variation | |
| Sep 6, 2025 | Udovenko | 0–1 | Clark | Hull 4NCL Congress 2025 - Open section. | Benoni Defense | |
| Jul 20, 2025 | Clark | ½–½ | Vaidyanathan | ECF English Open Championship 2025 | Ruy Lopez: Morphy Defense, Steinitz Deferred | |
| Jul 19, 2025 | Hertog | 1–0 | Clark | ECF English Open Championship 2025 | Benoni Defense: Knight's Tour Variation | |
| Jul 19, 2025 | Clark | ½–½ | Ellson | ECF English Open Championship 2025 | English Opening: King's English Variation | |
| Jul 18, 2025 | Schell | 1–0 | Clark | ECF English Open Championship 2025 | French Defense: Tarrasch Variation, Closed Variation | |
| Jul 18, 2025 | Yu | 1–0 | Clark | ECF English Open Championship 2025 | King's Indian Attack: Symmetrical Defense | |
| Jul 18, 2025 | Clark | 0–1 | Khoury | ECF English Open Championship 2025 | Hungarian Opening | |
| Apr 28, 2025 | Habershon | ½–½ | Clark | Round 7: Habershon, Paul F - Clark, Robert G | Scotch Game: Potter Variation | |
| Apr 27, 2025 | Clark | ½–½ | Hall | Round 5: Clark, Robert G - Hall, Alan | English Opening: King's English Variation, Four Knights Variation, Fianchetto Line, with Nb6 | |
| Apr 26, 2025 | Donnelly | ½–½ | Clark | Round 4: Donnelly, Mike J - Clark, Robert G | Benoni Defense: King's Pawn Line | |
| Apr 25, 2025 | Clark | 1–0 | Johnson | Round 3: Clark, Robert G - Johnson, Richard J | Sicilian Defense: Kan Variation, Maróczy Bind, Réti Variation | |
| Apr 25, 2025 | Wynarczyk | ½–½ | Clark | Round 2: Wynarczyk, Raymond - Clark, Robert G | French Defense: Winawer Variation, Advance Variation | |
| Apr 24, 2025 | Clark | ½–½ | OGorman | Round 1: Clark, Robert G - OGorman, Brendan | English Opening: Caro-Kann Defensive System | |
| Jul 31, 2024 | Punnett | 1–0 | Clark | Round 3: Punnett, Alan K - Clark, Robert G | French Defense: Advance Variation | |
| Jul 29, 2024 | Spanton | ½–½ | Clark | Round 1: Spanton, Tim R - Clark, Robert G | Caro-Kann Defense: Panov Attack, Modern Defense | |
| Aug 4, 2024 | Hughes | ½–½ | Clark | Round 7: Hughes, Roy - Clark, Robert G | Indian Defense | |
| Aug 3, 2024 | Clark | ½–½ | Dilleigh | Round 6: Clark, Robert G - Dilleigh, Stephen P | English Opening: Agincourt Defense, Catalan Defense Accepted | |
| Aug 2, 2024 | Pickersgill | 0–1 | Clark | Round 5: Pickersgill, Adrian O - Clark, Robert G | French Defense: Winawer Variation, Advance Variation | |
| Aug 1, 2024 | Clark | 1–0 | Matthews | Round 4: Clark, Robert G - Matthews, Gabriel | English Opening: Agincourt Defense, Neo-Catalan Declined | |
| Jul 30, 2024 | Clark | 1–0 | Phillips | Round 2: Clark, Robert G - Phillips, William | English Opening: Anglo-Indian Defense | |
| — | Clark | ½–½ | Robinson | Round 1: Clark, Robert G - Robinson, David | English Opening: King's English Variation | |
| — | Clark | ½–½ | Wilson | Round 3: Clark, Robert G - Wilson, Edgar | French Defense: Winawer Variation, Warsaw Variation | |
| — | Clark | 1–0 | Marks | Round 5: Clark, Robert G - Marks, Ian A | French Defense: McCutcheon Variation, Janowski Variation | |
| — | Clark | 1–0 | Tedd | Round 7: Clark, Robert G - Tedd, Bernie | English Opening: Symmetrical Variation, Duchamp Variation | |
| — | Gregg | ½–½ | Clark | Round 2: Gregg, Alan M - Clark, Robert G | French Defense: Tarrasch Variation, Closed Variation | |
| — | Costello | ½–½ | Clark | Round 4: Costello, Colin A - Clark, Robert G | English Opening: King's English Variation, Four Knights Variation, Fianchetto Line, with Nb6 | |
| — | Prince | ½–½ | Clark | Round 6: Prince, Alan R - Clark, Robert G | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
