| May 4, 2026 | Williams | 1–0 | Nawalaniec | Round 11: Williams, Simon K - Nawalaniec, Adam | Sicilian Defense: Najdorf Variation | |
| May 3, 2026 | Williams | ½–½ | Rakotomaharo | Round 10: Williams, Simon K - Rakotomaharo, Fy Antenaina | English Opening: Anglo-Indian Defense | |
| May 2, 2026 | Gallana | ½–½ | Williams | Round 9: Gallana, Marco - Williams, Simon K | Dutch Defense: Classical Variation | |
| Mar 31, 2026 | Williams | 1–0 | Sterck | Reykjavik Open 2026 | Ware Opening | |
| Mar 30, 2026 | Birkisson | 0–1 | Williams | Reykjavik Open 2026 | Dutch Defense: Raphael Variation | |
| Mar 29, 2026 | Williams | 0–1 | Andersen | Reykjavik Open 2026 | Queen's Gambit Accepted: Classical Defense, Russian Gambit | |
| Mar 28, 2026 | Sivanandan | 0–1 | Williams | Reykjavik Open 2026 | Modern Defense: Two Knights Variation | |
| Mar 28, 2026 | Williams | ½–½ | De Vleeschauwer | Reykjavik Open 2026 | Semi-Slav Defense: Botvinnik Variation | |
| Mar 27, 2026 | Mahalakshmi | 0–1 | Williams | Reykjavik Open 2026 | Dutch Defense: Classical Variation | |
| Mar 26, 2026 | Williams | 0–1 | Maurizzi | Reykjavik Open 2026 | Queen's Gambit Declined: Three Knights Variation | |
| Mar 26, 2026 | Vemparala | 0–1 | Williams | Reykjavik Open 2026 | English Opening: Agincourt Defense, Neo-Catalan Declined | |
| Mar 25, 2026 | Williams | 1–0 | Krischer | Reykjavik Open 2026 | Trompowsky Attack | |
| Mar 7, 2026 | Williams | ½–½ | Sulypa | Icelandic team chess championship premier league | Queen's Gambit Declined: Ragozin Defense | |
| Mar 7, 2026 | O`Donnell | 0–1 | Williams | Icelandic team chess championship premier league | Dutch Defense: Classical Variation | |
| Mar 6, 2026 | Ragnarsson | ½–½ | Williams | Icelandic team chess championship premier league | Dutch Defense: Classical Variation | |
| Mar 5, 2026 | Danielsen | 0–1 | Williams | Icelandic team chess championship premier league | Horwitz Defense | |
| Feb 21, 2026 | Kaasen | 0–1 | Williams | Power Solutions Arctic Chess NGP 2026 | Dutch Defense: Classical Variation | |
| Feb 20, 2026 | Grave | 0–1 | Williams | Power Solutions Arctic Chess NGP 2026 | French Defense: Tarrasch Variation | |
| Feb 19, 2026 | Williams | ½–½ | Hammari | Power Solutions Arctic Chess NGP 2026 | Zukertort Opening | |
| Feb 19, 2026 | Aamodt | 0–1 | Williams | Power Solutions Arctic Chess NGP 2026 | Dutch Defense: Classical Variation | |
| Feb 18, 2026 | Williams | 1–0 | Heier | Power Solutions Arctic Chess NGP 2026 | Queen's Gambit Declined: Harrwitz Attack, Orthodox Defense | |
| Jan 11, 2026 | Williams | 1–0 | Chow | Round 4: Williams, Simon K - Chow, Samuel | Grünfeld Defense: Exchange Variation | |
| Jan 10, 2026 | Merry | 1–0 | Williams | Round 3: Merry, Alan B - Williams, Simon K | Dutch Defense: Rubinstein Variation | |
| Jan 2, 2026 | Golding | 1–0 | Williams | Round 9: Golding, Alex - Williams, Simon K | Four Knights Game: Spanish Variation | |
| Jan 1, 2026 | Williams | 1–0 | Laurent-Paoli | Round 7: Williams, Simon K - Laurent-Paoli, Pierre | Indian Defense: Pseudo-Benko | |
| Dec 31, 2025 | Verbytski | 0–1 | Williams | Round 6: Verbytski, Oleg - Williams, Simon K | Italian Game: Paris Defense | |
| Dec 30, 2025 | Williams | 1–0 | Herzwurm | Round 5: Williams, Simon K - Herzwurm, Robert | Trompowsky Attack: Raptor Variation | |
| Dec 30, 2025 | Deuer | 1–0 | Williams | Round 4: Deuer, Marius - Williams, Simon K | Dutch Defense: Stonewall Variation, Modern Variation | |
| Dec 29, 2025 | Williams | 1–0 | Demac | Round 3: Williams, Simon K - Demac, Elias | Dutch Defense | |
| Dec 29, 2025 | Lau | ½–½ | Williams | Round 2: Lau, Lut Yin Luke - Williams, Simon K | French Defense: Tarrasch Variation, Closed Variation, Main Line | |
| Dec 28, 2025 | Williams | 1–0 | Yoon | Round 1: Williams, Simon K - Yoon, Jacob D | English Opening: Anglo-Indian Defense, Flohr-Mikenas-Carls Variation, Nei Gambit | |
| Dec 25, 2025 | Williams | ½–½ | Hagner | Round 8: Williams, Simon K - Hagner, Bennet | Queen's Gambit Declined: Ragozin Defense, Vienna Variation | |
| Dec 4, 2025 | Chasin | 1–0 | Williams | Icelandic team chess championship premier league | French Defense: Tarrasch Variation, Closed Variation | |
| Nov 16, 2025 | Briem | 0–1 | Williams | Icelandic team chess championship premier league | Catalan Opening: Closed | |
| Nov 15, 2025 | Johannesson | ½–½ | Williams | Icelandic team chess championship premier league | Queen's Pawn Game: Accelerated London System | |
| Nov 15, 2025 | Williams | 1–0 | Thorhallsson | Icelandic team chess championship premier league | Trompowsky Attack | |
| Nov 14, 2025 | Williams | 1–0 | Ragnarsson | Icelandic team chess championship premier league | Queen's Gambit Declined: Traditional Variation | |
| Nov 2, 2025 | Bottazzi | ½–½ | Williams | Round 2: Bottazzi, Ulysse - Williams, Simon K | French Defense: Steinitz Variation, Boleslavsky Variation | |
| Nov 1, 2025 | Williams | 1–0 | Hariharan | Round 1: Williams, Simon K - Hariharan, Shambavi | Torre Attack: Classical Defense | |
| Oct 24, 2025 | Smeets | ½–½ | Williams | Round 6: Smeets, Jan - Williams, Simon K | French Defense: Exchange Variation | |
| Oct 22, 2025 | Movsesian | 1–0 | Williams | Round 4: Movsesian, Sergei - Williams, Simon K | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Gurgenidze Variation | |
| Oct 20, 2025 | Gelfand | 1–0 | Williams | Round 2: Gelfand, Boris - Williams, Simon K | Zukertort Opening: Dutch Variation | |
| Jun 14, 2025 | Derakhshani | 0–1 | Williams | 2025 FIDE World Blitz Team Championship Pool C | Sicilian Defense: Wing Gambit, Marshall Variation | |
| Jun 14, 2025 | Camacho Collados | 1–0 | Williams | 2025 FIDE World Blitz Team Championship Pool C | Caro-Kann Defense: Exchange Variation | |
| Jun 14, 2025 | Yakubboev | 1–0 | Williams | 2025 FIDE World Blitz Team Championship Pool C | French Defense: Chigorin Variation | |
| Jun 14, 2025 | Bluebaum | 1–0 | Williams | 2025 FIDE World Blitz Team Championship Pool C | Dutch Defense: Rubinstein Variation | |
| Jun 14, 2025 | Williams | 1–0 | Kiremitciyan | 2025 FIDE World Blitz Team Championship Pool C | Queen's Gambit Declined: Three Knights Variation | |
| Jun 14, 2025 | Gurel | 0–1 | Williams | 2025 FIDE World Blitz Team Championship Pool C | French Defense: Tarrasch Variation, Closed Variation, Main Line | |
| Jun 13, 2025 | Amilal Munkhdalai | 1–0 | Williams | Round 11: Amilal Munkhdalai - Williams, Simon K | Sicilian Defense: Moscow Variation | |
| Jun 13, 2025 | Williams | 0–1 | Pichot | Round 10: Williams, Simon K - Pichot, Alan | Queen's Gambit Accepted | |
| Jun 13, 2025 | Hansen | 1–0 | Williams | Round 9: Hansen, Eric - Williams, Simon K | Modern Defense: Geller's System | |
| Jun 12, 2025 | Bilguun | ½–½ | Williams | Round 8: Bilguun, Sumiya - Williams, Simon K | French Defense: Schlechter Variation | |
| Jun 12, 2025 | Williams | 1–0 | Zhakshylykov | Round 7: Williams, Simon K - Zhakshylykov, Erzhan | Trompowsky Attack | |
| Jun 12, 2025 | Reimanis | 0–1 | Williams | Round 6: Reimanis, Ritvars - Williams, Simon K | Horwitz Defense | |
| Jun 12, 2025 | Jacobsen | 1–0 | Williams | Round 5: Jacobsen, Mikkel Manosri - Williams, Simon K | Horwitz Defense | |
| Jun 11, 2025 | Momunaliev | ½–½ | Williams | 2025 FIDE World Rapid Team Championschip matches 11-18 | French Defense: Tarrasch Variation, Closed Variation, Main Line | |
| Jun 11, 2025 | Skytte | 0–1 | Williams | 2025 FIDE World Rapid Team Championship matches 19-26 | French Defense: Advance Variation, Euwe Variation | |
| Jun 11, 2025 | Williams | ½–½ | Kogan | 2025 FIDE World Rapid Team Championschip matches 11-18 | Queen's Gambit Declined: Harrwitz Attack, Fianchetto Defense | |
| Jun 11, 2025 | Vaidyanathan | 1–0 | Williams | 2025 FIDE World Rapid Team Championship matches 19-26 | Dutch Defense: Classical Variation | |
| May 10, 2025 | Williams | ½–½ | Urkedal | Power Solutions Arctic Chess NGP 2026 | King's Gambit Accepted: Bishop's Gambit, Cozio Variation | |
| May 5, 2025 | Willow | 0–1 | Williams | Round 11: Willow, Jonah B - Williams, Simon K | French Defense: Advance Variation, Euwe Variation | |
| May 4, 2025 | Williams | 0–1 | Alsina Leal | Round 10: Williams, Simon K - Alsina Leal, Daniel | Queen's Gambit Declined: Ragozin Defense | |
| May 3, 2025 | Banerjee | ½–½ | Williams | Round 9: Banerjee, Supratit - Williams, Simon K | Philidor Defense: Lion Variation, Lion's Claw, with Be2 and c6 | |
| Apr 15, 2025 | Petersen | ½–½ | Williams | Reykjavik Open 2025 | Sicilian Defense: French Variation | |
| Apr 14, 2025 | Williams | 1–0 | Roubert | Reykjavik Open 2025 | Queen's Pawn Game: Colle System | |
| Apr 13, 2025 | Williams | ½–½ | Priansh Das | Reykjavik Open 2025 | Torre Attack: Fianchetto Defense | |
| Apr 13, 2025 | Borne | 1–0 | Williams | Reykjavik Open 2025 | Zukertort Opening: Dutch Variation | |
| Apr 12, 2025 | Golis | ½–½ | Williams | Reykjavik Open 2025 | Queen's Gambit Declined | |
| Apr 11, 2025 | Williams | 0–1 | Lu | Reykjavik Open 2025 | Queen's Gambit Declined: Three Knights, Vienna Variation | |
| Apr 10, 2025 | Williams | 1–0 | Dauth | Reykjavik Open 2025 | Pirc Defense: Classical Variation | |
| Apr 10, 2025 | Arun | 0–1 | Williams | Reykjavik Open 2025 | Dutch Defense: Classical Variation | |
| Apr 9, 2025 | Ravi Krishna G | 0–1 | Williams | Reykjavik Open 2025 | Dutch Defense: Classical Variation | |
| Apr 6, 2025 | Williams | 1–0 | Rendle | Round 8: Williams, Simon K - Rendle, Thomas E | Slav Defense: Geller Gambit | |
| Apr 5, 2025 | Ledger | 0–1 | Williams | Round 7: Ledger, Andrew J - Williams, Simon K | Semi-Slav Defense: Main Line | |
| Jan 26, 2025 | Williams | 1–0 | Price | Round 4: Williams, Simon K - Price, Gwilym | Bird Opening | |
| Jan 25, 2025 | Taylor | 0–1 | Williams | Round 3: Taylor, Martin R - Williams, Simon K | Horwitz Defense | |
| Jul 31, 2024 | Williams | 0–1 | Richardson | Round 5: Williams, Simon K - Richardson, John R | English Opening: Caro-Kann Defensive System | |
| Jul 29, 2024 | Williams | ½–½ | Yao | Round 3: Williams, Simon K - Yao, Lan | Indian Defense | |
| Jul 28, 2024 | Kalavannan | ½–½ | Williams | Round 2: Kalavannan, Koby - Williams, Simon K | French Defense: Exchange Variation | |
| Jul 27, 2024 | Williams | 1–0 | Badacsonyi | Round 1: Williams, Simon K - Badacsonyi, Stanley | English Opening: Anglo-Indian Defense, Queen's Knight Variation | |
| May 6, 2024 | Williams | 0–1 | Makkar | Round 11: Williams, Simon K - Makkar, Rajat | Slav Defense: Exchange Variation, Boor Attack | |
| May 5, 2024 | Royal | 1–0 | Williams | Round 10: Royal, Shreyas - Williams, Simon K | English Defense | |
| May 4, 2024 | Williams | 0–1 | Olson | Round 9: Williams, Simon K - Olson, Hamish | Zukertort Opening | |
| Nov 24, 2024 | Williams | 0–1 | Csonka | Round 2: Williams, Simon K - Csonka, Balazs | Queen's Gambit Declined: Semi-Tarrasch Defense, Main Line | |
| Nov 23, 2024 | Badacsonyi | 0–1 | Williams | Round 1: Badacsonyi, Stanley - Williams, Simon K | Dutch Defense: Classical Variation | |
| Aug 4, 2024 | Williams | ½–½ | Hebden | Round 9: Williams, Simon K - Hebden, Mark L | English Opening: Great Snake Variation | |
| Aug 3, 2024 | Golding | 0–1 | Williams | Round 8: Golding, Alex - Williams, Simon K | Sicilian Defense: Sozin Attack, Leonhardt Variation | |
| Aug 2, 2024 | Williams | 1–0 | Sivanandan | Round 7: Williams, Simon K - Sivanandan, Bodhana | Semi-Slav Defense | |
| Aug 1, 2024 | Pert | ½–½ | Williams | Round 6: Pert, Richard G - Williams, Simon K | Indian Defense: Przepiorka Variation | |
| Jul 30, 2024 | Balaji | ½–½ | Williams | Round 4: Balaji, Aaravamudhan - Williams, Simon K | Dutch Defense: Classical Variation | |
| May 1, 2023 | Kilpatrick | 0–1 | Williams | 4NCL Division 1 2022-2023 | Modern Defense: Standard Defense | |
| Apr 30, 2023 | Alsina Leal | 0–1 | Williams | 4NCL Division 1 2022-2023 | French Defense: Advance Variation | |
| Apr 29, 2023 | Williams | ½–½ | Moreby | 4NCL Division 1 2022-2023 | Zukertort Opening: Sicilian Invitation | |
| Apr 3, 2023 | Williams | 1–0 | Dieu | Reykjavik Open 2023 | French Defense: Advance Variation | |
| Apr 2, 2023 | Kunz | 0–1 | Williams | Reykjavik Open 2023 | Modern Defense: Standard Defense | |
| Apr 1, 2023 | Williams | 0–1 | Sahithi | Reykjavik Open 2023 | Bogo-Indian Defense: Grünfeld Variation | |
| Apr 1, 2023 | Cornelisse | 0–1 | Williams | Reykjavik Open 2023 | Sicilian Defense: Moscow Variation | |
| Mar 31, 2023 | Williams | 0–1 | Can | Reykjavik Open | Sicilian Defense: Alapin Variation | |
| Mar 30, 2023 | Williams | 1–0 | Rakhmangulova | Reykjavik Open 2023 | Slav Defense: Exchange Variation, Boor Attack | |
| Mar 30, 2023 | Cieslak | ½–½ | Williams | Reykjavik Open 2023 | Modern Defense: Two Knights Variation | |