| Apr 19, 2026 | Cojocaru | 0–1 | Yoon | 4th Sussex University Weekend Congress - Blitz | Sicilian Defense: Bowdler Attack | |
| Apr 19, 2026 | Yoon | 0–1 | Korshunov | 4th Sussex University Weekend Congress - Blitz | Indian Defense | |
| Apr 19, 2026 | Brewer | 1–0 | Yoon | 4th Sussex University Weekend Congress - Blitz | Sicilian Defense: Moscow Variation, Main Line | |
| Apr 19, 2026 | Kendall | 0–1 | Yoon | 4th Sussex University Weekend Congress - Blitz | Horwitz Defense | |
| Apr 19, 2026 | Yoon | 0–1 | Kudaibergen | 4th Sussex University Weekend Congress - Blitz | Caro-Kann Defense: Classical Variation, Main Line | |
| Apr 19, 2026 | Eldridge | 0–1 | Yoon | 4th Sussex University Weekend Congress - Blitz | Queen's Indian Defense: Kasparov-Petrosian Variation, Main Line | |
| Apr 19, 2026 | Yoon | 1–0 | Pack | 4th Sussex University Weekend Congress - Blitz | Queen's Gambit Accepted: Old Variation | |
| Apr 19, 2026 | Maharnab Choudhury | 0–1 | Yoon | 4th Sussex University Weekend Congress - Blitz | Sicilian Defense: Classical Variation, Anti-Sozin Variation | |
| Apr 19, 2026 | Yoon | 1–0 | Freeman | 4th Sussex University Weekend Congress - Blitz | Zukertort Opening: Sicilian Invitation | |
| Apr 18, 2026 | Kudaibergen | 0–1 | Yoon | 4th Sussex University Weekend Congress - Congress Under 2400 | Caro-Kann Defense: Advance Variation | |
| Apr 18, 2026 | Yoon | 1–0 | Bevis | 4th Sussex University Weekend Congress - Congress Under 2400 | Sicilian Defense: Kalashnikov Variation | |
| Apr 18, 2026 | Norinkeviciute | 0–1 | Yoon | 4th Sussex University Weekend Congress - Congress Under 2400 | English Opening: Agincourt Defense, Catalan Defense, Semi-Slav Defense | |
| Apr 12, 2026 | Bezuidenhout | ½–½ | Yoon | 4th Sussex University Weekend Congress - Congress Under 2400 | Sicilian Defense: Chekhover Variation | |
| Apr 12, 2026 | Yoon | 1–0 | Giahos | 4th Sussex University Weekend Congress - Congress Under 2400 | Italian Game: Classical Variation, Giuoco Pianissimo, with a5 | |
| Apr 11, 2026 | Yoon | 1–0 | Kwiatkowski | Golders Green FIDE Rapidplay - 10th April 2026 - Open | Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation | |
| Apr 11, 2026 | Yoon | 0–1 | Malinovskii | Golders Green FIDE Rapidplay - 10th April 2026 - Open | Indian Defense: Wade-Tartakower Defense | |
| Apr 11, 2026 | Yoon | 1–0 | Roberts | Golders Green FIDE Rapidplay - 10th April 2026 - Open | Semi-Slav Defense: Normal Variation | |
| Apr 10, 2026 | Balakrishnan | 1–0 | Yoon | Golders Green FIDE Rapidplay - 10th April 2026 - Open | English Opening: Anglo-Indian Defense, King's Knight Variation | |
| Mar 22, 2026 | Dicen | 0–1 | Yoon | Round 8: Dicen, Elis Denele - Yoon, Jacob D | Queen's Pawn Game: Symmetrical Variation | |
| Mar 21, 2026 | Yoon | 1–0 | Gayson | Round 7: Yoon, Jacob D - Gayson, Peter M | Dutch Defense: Fianchetto Attack | |
| Mar 15, 2026 | Nawalaniec | 0–1 | Yoon | Round 11: Nawalaniec, Adam - Yoon, Jacob D | Sicilian Defense: Classical Variation, Anti-Sozin Variation | |
| Mar 15, 2026 | Yoon | 1–0 | Bakhtiyarov | Round 10: Yoon, Jacob D - Bakhtiyarov, Kamronbek | Petrov's Defense: Modern Attack | |
| Mar 15, 2026 | Pearson | 0–1 | Yoon | Round 9: Pearson, Charlie - Yoon, Jacob D | Nimzo-Larsen Attack | |
| Mar 15, 2026 | Yoon | 1–0 | Bramson | Round 8: Yoon, Jacob D - Bramson, Mike | Queen's Gambit Declined: Harrwitz Attack | |
| Mar 15, 2026 | Beswick | 0–1 | Yoon | Round 7: Beswick, Andrew - Yoon, Jacob D | Sicilian Defense: Closed, Traditional | |
| Mar 14, 2026 | Yoon | 0–1 | Salman | Round 6: Yoon, Jacob D - Salman, Haytham | Ware Opening | |
| Mar 14, 2026 | Badacsonyi | 1–0 | Yoon | Round 5: Badacsonyi, Stanley - Yoon, Jacob D | Nimzo-Indian Defense: Normal Variation | |
| Mar 14, 2026 | Yoon | 0–1 | Bates | Round 4: Yoon, Jacob D - Bates, Richard A | East Indian Defense | |
| Mar 14, 2026 | Hunt | ½–½ | Yoon | Round 3: Hunt, Harriet V - Yoon, Jacob D | Sicilian Defense: Moscow Variation, Main Line | |
| Mar 14, 2026 | Yoon | 1–0 | Cancedda-Dupuis | Round 2: Yoon, Jacob D - Cancedda-Dupuis, Livio | Queen's Gambit Declined: Ragozin Defense | |
| Mar 14, 2026 | Thompson | 0–1 | Yoon | Round 1: Thompson, Andrew - Yoon, Jacob D | Sicilian Defense: Dragon Variation, Classical Variation | |
| Feb 22, 2026 | Yoon | ½–½ | Tran | Round 9: Yoon, Jacob D - Tran, David | Sicilian Defense: Grand Prix Attack | |
| Feb 22, 2026 | Verma | 1–0 | Yoon | Round 8: Verma, Aditya - Yoon, Jacob D | Sicilian Defense: Classical Variation, Fianchetto Variation | |
| Feb 22, 2026 | Yoon | 1–0 | Pelling | Round 7: Yoon, Jacob D - Pelling, Kyle | Caro-Kann Defense: Classical Variation, Seirawan Variation | |
| Feb 22, 2026 | Leslie | 1–0 | Yoon | Round 6: Leslie, Alex - Yoon, Jacob D | Benoni Defense: Fianchetto Variation, Hastings Defense, Main Line | |
| Feb 21, 2026 | Badacsonyi | 1–0 | Yoon | Round 9: Badacsonyi, Frankie - Yoon, Jacob D | Ware Opening: Symmetric Variation | |
| Feb 21, 2026 | Yoon | 0–1 | Saunders | Round 8: Yoon, Jacob D - Saunders, Aron | Caro-Kann Defense: Tartakower Variation | |
| Feb 21, 2026 | Kovalskyi | 0–1 | Yoon | Round 5: Kovalskyi, Roman - Yoon, Jacob D | Van Geet Opening | |
| Feb 21, 2026 | Yoon | 1–0 | Tran | Round 4: Yoon, Jacob D - Tran, David | East Indian Defense | |
| Feb 21, 2026 | Minko | ½–½ | Yoon | Round 3: Minko, Dmitry - Yoon, Jacob D | French Defense: Steinitz Variation | |
| Feb 21, 2026 | Yoon | 1–0 | Akeya-Price | Round 2: Yoon, Jacob D - Akeya-Price, Robert | Zukertort Opening | |
| Feb 21, 2026 | Ellett | 0–1 | Yoon | Round 1: Ellett, Laurence - Yoon, Jacob D | Caro-Kann Defense: Panov Attack, Fianchetto Defense | |
| Feb 21, 2026 | Weersing | 0–1 | Yoon | Round 4: Weersing, Abigail Riis - Yoon, Jacob D | English Defense | |
| Feb 21, 2026 | Yoon | 1–0 | Shiatis | Round 5: Yoon, Jacob D - Shiatis, Rohan | East Indian Defense | |
| Feb 21, 2026 | Yoon | 1–0 | Cont | Round 3: Yoon, Jacob D - Cont, Arya | East Indian Defense | |
| Feb 21, 2026 | Saunders | 0–1 | Yoon | Round 2: Saunders, Aron - Yoon, Jacob D | Sicilian Defense: Moscow Variation, Main Line | |
| Feb 21, 2026 | Yoon | 0–1 | Kuhendiran | Round 1: Yoon, Jacob D - Kuhendiran, Tharshan | Scandinavian Defense: Gubinsky-Melts Defense | |
| Feb 19, 2026 | Carroll | 1–0 | Yoon | Round 7: Carroll, Peter - Yoon, Jacob D | French Defense: Paulsen Variation | |
| Feb 19, 2026 | Yoon | 1–0 | Clarke | Round 6: Yoon, Jacob D - Clarke, Connor | Queen's Gambit Accepted: Classical Defense, Alekhine System | |
| Feb 8, 2026 | Yoon | ½–½ | Czopor | Round 6: Yoon, Jacob D - Czopor, Maciej | Sicilian Defense: Kalashnikov Variation | |
| Feb 7, 2026 | Eggleston | 1–0 | Yoon | Round 5: Eggleston, David J - Yoon, Jacob D | Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation, Nyezhmetdinov Attack | |
| Jan 11, 2026 | Maciol | 0–1 | Yoon | Round 4: Maciol, Ryszard - Yoon, Jacob D | Queen's Indian Defense | |
| Jan 10, 2026 | Yoon | ½–½ | Bezuidenhout | Round 3: Yoon, Jacob D - Bezuidenhout, Roland | English Opening: Symmetrical Variation, Ultra-Symmetrical Variation | |
| Jan 2, 2026 | Badacsonyi | 1–0 | Yoon | Round 9: Badacsonyi, Stanley - Yoon, Jacob D | Benoni Defense: Fianchetto Variation | |
| Jan 1, 2026 | Skytte | ½–½ | Yoon | Round 8: Skytte, Rasmus - Yoon, Jacob D | Sicilian Defense: Grand Prix Attack | |
| Jan 1, 2026 | Yoon | 1–0 | Kim | Round 7: Yoon, Jacob D - Kim, Changhoon | Semi-Slav Defense: Accelerated Meran Variation | |
| Dec 31, 2025 | Dewangan | 0–1 | Yoon | Round 6: Dewangan, Aayush - Yoon, Jacob D | Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation, Early Deviations | |
| Dec 30, 2025 | Yoon | 0–1 | Verbytski | Round 5: Yoon, Jacob D - Verbytski, Oleg | Queen's Gambit Declined: Harrwitz Attack | |
| Dec 30, 2025 | Yoon | 1–0 | Kilambi | Round 4: Yoon, Jacob D - Kilambi, Venkata Ananth Akshay | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| Dec 29, 2025 | Gormally | 1–0 | Yoon | Round 3: Gormally, Daniel W - Yoon, Jacob D | Queen's Indian Defense: Fianchetto Variation, Check Variation, Intermezzo Line | |
| Dec 29, 2025 | Yoon | 1–0 | Ward | Round 2: Yoon, Jacob D - Ward, Cian | French Defense: Tarrasch Variation, Closed Variation | |
| 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 7, 2025 | Yoon | 1–0 | Mirzoeva | Round 10: Yoon, Jacob D - Mirzoeva, Elmira | Philidor Defense: Lion Variation | |
| Dec 7, 2025 | Yoon | ½–½ | Manmay Chopra | Round 9: Yoon, Jacob D - Manmay Chopra | Ruy Lopez: Open Berlin Defense, l'Hermet Variation | |
| Dec 7, 2025 | Breton | 0–1 | Yoon | Round 8: Breton, Martin - Yoon, Jacob D | Queen's Gambit Declined: Ragozin Defense | |
| Dec 7, 2025 | Timmermans | 1–0 | Yoon | Round 6: Timmermans, Mark - Yoon, Jacob D | Polish Opening | |
| Dec 6, 2025 | Willow | 1–0 | Yoon | Round 5: Willow, Jonah B - Yoon, Jacob D | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| Dec 6, 2025 | Yoon | 1–0 | Porras Mateo | Round 4: Yoon, Jacob D - Porras Mateo, Felipe | Slav Defense | |
| Dec 6, 2025 | Yoon | 0–1 | Pranav Anand | Round 2: Yoon, Jacob D - Pranav Anand | Rapport-Jobava System | |
| Dec 3, 2025 | Sivanandan | 0–1 | Yoon | Round 9: Sivanandan, Bodhana - Yoon, Jacob D | Sicilian Defense: Moscow Variation, Main Line | |
| Dec 2, 2025 | Yoon | 1–0 | Hariharan | Round 8: Yoon, Jacob D - Hariharan, Shambavi | Scotch Game: Potter Variation | |
| Dec 1, 2025 | Otsuka | 1–0 | Yoon | Round 7: Otsuka, Shou - Yoon, Jacob D | Sicilian Defense: Closed, Chameleon Variation | |
| Nov 30, 2025 | Yoon | 1–0 | Aditya Kunal Patil | Round 6: Yoon, Jacob D - Aditya Kunal Patil | Queen's Gambit Declined: Three Knights Variation | |
| Nov 30, 2025 | Yoon | ½–½ | Balaji | Round 5: Yoon, Jacob D - Balaji, Aaravamudhan | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| Nov 29, 2025 | Dobrosmyslov | ½–½ | Yoon | Round 4: Dobrosmyslov, Artem - Yoon, Jacob D | Sicilian Defense: Moscow Variation, Main Line | |
| Nov 28, 2025 | Richardson | ½–½ | Yoon | Round 3: Richardson, John R - Yoon, Jacob D | Nimzo-Indian Defense: Reshevsky Variation | |
| Nov 28, 2025 | Yoon | 0–1 | Vu Dinh | Round 2: Yoon, Jacob D - Vu Dinh, Adrien | Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation | |
| Nov 27, 2025 | Kovchan | 1–0 | Yoon | Round 1: Kovchan, Alexander - Yoon, Jacob D | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| Nov 2, 2025 | Yoon | 1–0 | Toma | Round 2: Yoon, Jacob D - Toma, Katarzyna | Sicilian Defense: Kalashnikov Variation | |
| Nov 1, 2025 | Bates | 1–0 | Yoon | Round 1: Bates, Richard A - Yoon, Jacob D | Queen's Indian Defense: Fianchetto Variation, Check Variation, Intermezzo Line | |
| Sep 20, 2025 | Conquest | 1–0 | Yoon | 2025 UK Open Blitz Qualifier: London 3 (Golders Green) | Trompowsky Attack | |
| Sep 20, 2025 | Pein | ½–½ | Yoon | 2025 UK Open Blitz Qualifier: London 3 (Golders Green) | Caro-Kann Defense: Euwe Attack | |
| Sep 20, 2025 | Yoon | 1–0 | Damodaran | 2025 UK Open Blitz Qualifier: London 3 (Golders Green) | Zukertort Opening: Queen's Gambit Invitation | |
| May 31, 2025 | Yoon | ½–½ | Skettos | Round 9: Yoon, Jacob D - Skettos, Nicolas | French Defense: Wing Gambit | |
| May 30, 2025 | Yoon | ½–½ | Yu | Round 8: Yoon, Jacob D - Yu, Rock | Queen's Indian Defense: Classical Variation, Traditional Variation | |
| May 30, 2025 | Shearsby | 1–0 | Yoon | Round 7: Shearsby, Jude - Yoon, Jacob D | English Opening: Jaenisch Gambit | |
| May 29, 2025 | Yoon | 0–1 | Cuenca Jimenez | Round 6: Yoon, Jacob D - Cuenca Jimenez, Jose Fernando | Nimzo-Larsen Attack: Classical Variation | |
| May 28, 2025 | Iyengar | 0–1 | Yoon | Round 5: Iyengar, Ilya - Yoon, Jacob D | Benko Gambit Declined: Main Line | |
| May 28, 2025 | Yoon | 1–0 | Hindol Ghosh | Round 4: Yoon, Jacob D - Hindol Ghosh | English Opening: Agincourt Defense, Wimpy System | |
| May 27, 2025 | Cole | 0–1 | Yoon | Round 3: Cole, James - Yoon, Jacob D | Queen's Gambit Declined | |
| May 26, 2025 | Yoon | 0–1 | Nawalaniec | Round 2: Yoon, Jacob D - Nawalaniec, Adam | Queen's Gambit Declined: Harrwitz Attack, Fianchetto Defense | |
| May 26, 2025 | Kothari | ½–½ | Yoon | Round 1: Kothari, Jai - Yoon, Jacob D | French Defense: Schlechter Variation | |
| May 5, 2025 | Yoon | 0–1 | Berry | Round 11: Yoon, Jacob D - Berry, Neil | Zukertort Opening | |
| May 4, 2025 | Varney | 0–1 | Yoon | Round 10: Varney, Zoe - Yoon, Jacob D | Caro-Kann Defense: Accelerated Panov Attack, Modern Variation | |
| May 3, 2025 | Yoon | 0–1 | Wadsworth | Round 9: Yoon, Jacob D - Wadsworth, Matthew J | Bogo-Indian Defense: Nimzowitsch Variation | |
| Apr 6, 2025 | Yoon | ½–½ | Cyborowski | Round 8: Yoon, Jacob D - Cyborowski, Lukasz | Queen's Gambit Declined: Barmen Variation | |
| Apr 5, 2025 | Golding | 1–0 | Yoon | Round 7: Golding, Alex - Yoon, Jacob D | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| Mar 2, 2025 | Mihalik | ½–½ | Yoon | Round 11: Mihalik, Agoston - Yoon, Jacob D | French Defense: Tarrasch Variation, Morozevich Variation | |
| Feb 23, 2025 | Obiamiwe | 0–1 | Yoon | British Universities Chess Association Championship 2025 | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| Feb 23, 2025 | Muhunthan | 0–1 | Yoon | British Universities Chess Association Championship 2025 | Caro-Kann Defense: Two Knights Attack, Mindeno Variation, Exchange Line | |