| Mar 31, 2026 | Matsunaga | 1–0 | Mannion | Reykjavik Open 2026 | King's Pawn Game | |
| Mar 30, 2026 | Mannion | ½–½ | Griffith | Reykjavik Open 2026 | French Defense: Tarrasch Variation, Chistyakov Defense | |
| Mar 29, 2026 | Chen | ½–½ | Mannion | Reykjavik Open 2026 | English Opening: King's English Variation | |
| Mar 28, 2026 | Mannion | ½–½ | Injac | Reykjavik Open 2026 | Sicilian Defense: Kalashnikov Variation | |
| Mar 28, 2026 | Magzumov | 0–1 | Mannion | Reykjavik Open 2026 | Ruy Lopez: Closed, Keres Defense | |
| Mar 27, 2026 | Mannion | ½–½ | Stefansson | Reykjavik Open 2026 | Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation, Early Deviations | |
| Mar 26, 2026 | Lavrencic | ½–½ | Mannion | Reykjavik Open 2026 | Ruy Lopez: Closed, Chigorin Defense | |
| Feb 25, 2026 | Mannion | ½–½ | Riff | 42e Open de Cappelle | Ruy Lopez: Closed, Bogoljubow Variation | |
| Feb 22, 2026 | Can | 1–0 | Mannion | 42e Open de Cappelle | Italian Game: Giuoco Pianissimo, Normal | |
| Jan 16, 2026 | Bohatyrov | 1–0 | Mannion | Prague Open 2026 - A IM Open | King's Pawn Game | |
| Jan 14, 2026 | Klys | ½–½ | Mannion | Prague Open 2026 - A IM Open | Queen's Gambit Accepted: Classical Defense, Russian Gambit | |
| Jan 13, 2026 | Mannion | 0–1 | Lieberwirth | Prague Open 2026 - A IM Open | Sicilian Defense: Najdorf Variation | |
| Jan 12, 2026 | Tolmacevs | 0–1 | Mannion | Prague Open 2026 - A IM Open | Scotch Game: Schmidt Variation | |
| Jan 4, 2026 | Ernst | ½–½ | Mannion | Open A | Queen's Gambit Accepted: Central Variation, McDonnell Defense | |
| Jan 3, 2026 | Mannion | 0–1 | Brozyna | Open A | Caro-Kann Defense: Advance Variation, Short Variation | |
| Jan 2, 2026 | Pranav Pradeep Nair | 0–1 | Mannion | Open A | Scotch Game: Mieses Variation | |
| Jan 2, 2026 | Mannion | 0–1 | Golis | Open A | Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation | |
| Dec 31, 2025 | Antolak | ½–½ | Mannion | Open A | Ruy Lopez: Morphy Defense, Anderssen Variation | |
| Dec 30, 2025 | Mannion | ½–½ | Madej | Open A | Caro-Kann Defense: Tartakower Variation | |
| Dec 29, 2025 | Pawlowski | 0–1 | Mannion | XXXVI Miedzynarodowy Festiwal Szachowy CRACOVIA 2025 Grupa A | Scotch Game: Scotch Gambit, Göring Gambit Declined | |
| Dec 28, 2025 | Mannion | 0–1 | Pankiv | Open A | Sicilian Defense: Moscow Variation | |
| Dec 27, 2025 | Radzimski | ½–½ | Mannion | Open A | Queen's Gambit Accepted: Classical Defense, Main Line | |
| Nov 2, 2025 | Deusa Ballesteros | ½–½ | Mannion | Benidorm Chess Open A 2025 | Queen's Gambit Accepted: Classical Defense, Main Line | |
| Nov 1, 2025 | Mannion | 1–0 | Blanco Sanjuan | Benidorm Chess Open A 2025 | Sicilian Defense: Taimanov Variation, Bastrikov Variation | |
| Oct 31, 2025 | Siddharth | 1–0 | Mannion | Benidorm Chess Open A 2025 | Ruy Lopez: Closed, Chigorin Defense, Panov System | |
| Oct 30, 2025 | Mannion | ½–½ | Paarshva Parmar | Benidorm Chess Open A 2025 | Italian Game: Classical Variation, Center Attack | |
| Oct 29, 2025 | Abel Sajan | ½–½ | Mannion | Benidorm Chess Open A 2025 | Ruy Lopez: Morphy Defense, Steinitz Deferred | |
| Oct 28, 2025 | Mannion | 0–1 | Tsyhanchuk | Benidorm Chess Open A 2025 | Sicilian Defense: Kan Variation, Polugaevsky Variation | |
| Oct 28, 2025 | Manukyan | ½–½ | Mannion | Benidorm Chess Open A 2025 | Queen's Gambit Accepted: Mannheim Variation | |
| Oct 27, 2025 | Mannion | 1–0 | Yasaswi Krishna Bommi | Round 2: Mannion, Stephen R - Yasaswi Krishna Bommi | Pirc Defense: Austrian Attack, Dragon Formation | |
| Oct 26, 2025 | Bara | 0–1 | Mannion | Round 1: Bara, Jan - Mannion, Stephen R | English Opening: King's English Variation | |
| Jul 25, 2025 | Mannion | 0–1 | Zanan | CZECH OPEN 2025 - A - PARDUBICE OPEN - open grandmaster tournament, part of the ACP world series | Ruy Lopez: Closed | |
| Jun 16, 2025 | Mannion | 0–1 | Baenziger | TEPLICE OPEN 2025 | French Defense: Tarrasch Variation, Open System, Euwe-Keres Line | |
| Apr 22, 2025 | Puranik | 1–0 | Mannion | Round 1: Puranik, Abhimanyu - Mannion, Stephen R | Ruy Lopez: Closed, Chigorin Defense | |
| Apr 10, 2025 | Yankelevich | 1–0 | Mannion | Reykjavik Open 2025 | Ruy Lopez: Closed, Keres Defense | |
| Feb 28, 2025 | Noe | 0–1 | Mannion | PICF 2025 - KAREL JANEČEK Open | King's Indian Attack | |
| Jan 16, 2025 | Mannion | ½–½ | Horak | praha2025 | Sicilian Defense: Accelerated Dragon, Maróczy Bind, Gurgenidze Variation | |
| Jan 15, 2025 | Verner | 0–1 | Mannion | praha2025 | King's Gambit Accepted: Fischer Defense | |
| Jan 14, 2025 | Mannion | 0–1 | Kulhanek | praha2025 | Sicilian Defense: Dragon Variation, Yugoslav Attack, Modern Line | |
| Jan 13, 2025 | Mannion | ½–½ | Marek | praha2025 | Sicilian Defense: Richter-Rauzer Variation, Modern Variation | |
| Jan 12, 2025 | Jiricek | 0–1 | Mannion | praha2025 | English Opening: King's English Variation, Four Knights Variation, Fianchetto Line | |
| Jan 11, 2025 | Mannion | 1–0 | Kapolkova | praha2025 | Sicilian Defense: Najdorf Variation, Amsterdam Variation | |
| Jan 11, 2025 | Elashvili | ½–½ | Mannion | praha2025 | Zukertort Opening | |
| Jan 10, 2025 | Mannion | 1–0 | Kopacki | praha2025 | Sicilian Defense: Richter-Rauzer Variation, Classical Variation | |
| Dec 20, 2024 | Vivaan Rana | 1–0 | Mannion | XI Sunway Sitges International Chess Festival 2024 - Group A | Van Geet Opening | |
| Dec 19, 2024 | Mannion | 0–1 | Coles | XI Sunway Sitges International Chess Festival 2024 - Group A | French Defense: Tarrasch Variation, Open System, Euwe-Keres Line | |
| Dec 18, 2024 | Safarov | ½–½ | Mannion | XI Sunway Sitges International Chess Festival 2024 - Group A | Ruy Lopez: Closed, Martinez Variation | |
| Dec 16, 2024 | Mannion | ½–½ | Liu | XI Sunway Sitges International Chess Festival 2024 - Group A | French Defense: Tarrasch Variation | |
| Dec 15, 2024 | Mannion | 1–0 | Arkell | XI Sunway Sitges International Chess Festival 2024 - Group A | Caro-Kann Defense: Advance Variation | |
| Dec 13, 2024 | Mannion | 0–1 | Xu | XI Sunway Sitges International Chess Festival 2024 - Group A | Scotch Game: Scotch Gambit, Advance Variation | |
| Nov 1, 2024 | Llopis de Aysa | ½–½ | Mannion | Round 8: Llopis de Aysa, Manuel - Mannion, Stephen R | Queen's Gambit Accepted: Classical Defense, Rubinstein Variation | |
| Oct 29, 2024 | Ceccarini | ½–½ | Mannion | Round 5: Ceccarini, Marco - Mannion, Stephen R | Four Knights Game | |
| Oct 28, 2024 | Mannion | ½–½ | Wacker | Round 4: Mannion, Stephen R - Wacker, Peter | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| Oct 27, 2024 | Melikhov | ½–½ | Mannion | Round 3: Melikhov, Evgeny V. - Mannion, Stephen R | Queen's Gambit Accepted: Classical Defense, Rubinstein Variation | |
| Oct 12, 2024 | Mannion | ½–½ | Simonsen | Fagernes International Autumn 2024 | Sicilian Defense: Najdorf Variation, Amsterdam Variation | |
| Oct 11, 2024 | Lien | ½–½ | Mannion | Fagernes International Autumn 2024 | Queen's Gambit Accepted: Classical Defense, Main Line | |
| Oct 10, 2024 | Mannion | 0–1 | Vijayakumar | Fagernes International Autumn 2024 | Scotch Game: Scotch Gambit, Advance Variation | |
| Oct 9, 2024 | Mannion | ½–½ | Sieber | Fagernes International Autumn 2024 | Sicilian Defense: Scheveningen Variation, English Attack, with f3 | |
| Oct 9, 2024 | Eliseev | ½–½ | Mannion | Fagernes International Autumn 2024 | Petrov's Defense: Nimzowitsch Attack | |
| Oct 8, 2024 | Welling | ½–½ | Mannion | Fagernes International Autumn 2024 | Nimzo-Larsen Attack: Classical Variation | |
| Oct 7, 2024 | Mannion | 0–1 | Das | Fagernes International Autumn 2024 | Caro-Kann Defense: Advance Variation, Short Variation | |
| Oct 6, 2024 | Sherman | ½–½ | Mannion | Fagernes International Autumn 2024 | English Opening: Agincourt Defense, Wimpy System | |
| Jul 31, 2024 | Verbytski | 0–1 | Mannion | Round 5: Verbytski, Oleg - Mannion, Stephen R | Italian Game: Classical Variation, Greco Gambit, Moeller-Therkatz Attack | |
| Jul 29, 2024 | Merriman | 1–0 | Mannion | Round 3: Merriman, John - Mannion, Stephen R | Queen's Gambit Accepted: Classical, Furman Variation | |
| Jul 28, 2024 | Mannion | ½–½ | Palliser | Round 2: Mannion, Stephen R - Palliser, Richard J D | Sicilian Defense: Najdorf Variation, Amsterdam Variation | |
| Jul 27, 2024 | Lutsko | 1–0 | Mannion | Round 1: Lutsko, Artem - Mannion, Stephen R | Ruy Lopez: Morphy Defense, Steinitz Deferred | |
| Jul 14, 2024 | Woods | 0–1 | Mannion | Round 9: Woods, Yannick - Mannion, Stephen R | Trompowsky Attack | |
| Jul 13, 2024 | Mannion | ½–½ | Liu | Round 8: Mannion, Stephen R - Liu, Jason | French Defense: Tarrasch Variation, Chistyakov Defense | |
| Jul 12, 2024 | Giulian | ½–½ | Mannion | Round 7: Giulian, Philip M - Mannion, Stephen R | English Opening: King's English Variation, Nimzowitsch-Flohr Variation | |
| Jul 11, 2024 | Mannion | 1–0 | Murdochy | Round 6: Mannion, Stephen R - Murdochy, Shivan | French Defense: Tarrasch Variation, Chistyakov Defense | |
| Jul 11, 2024 | Holm | 1–0 | Mannion | Round 5: Holm, Kristian Stuvik - Mannion, Stephen R | English Opening: King's English Variation, Four Knights Variation, Fianchetto Line, with Nb6 | |
| Jul 10, 2024 | Mannion | 1–0 | Sneddon | Round 4: Mannion, Stephen R - Sneddon, Iain D | French Defense: Tarrasch Variation, Guimard Defense, Main Line | |
| Jul 9, 2024 | Burnett | 0–1 | Mannion | Round 3: Burnett, Walter - Mannion, Stephen R | Bird Opening | |
| Jul 9, 2024 | Mannion | 0–1 | Large | Round 2: Mannion, Stephen R - Large, Peter G | Italian Game: Scotch Invitation Declined | |
| Jul 8, 2024 | Blackford | 0–1 | Mannion | Round 1: Blackford, Ross - Mannion, Stephen R | Italian Game: Classical Variation, Giuoco Pianissimo, with d6 | |
| Jun 23, 2024 | Mannion | 0–1 | Yaniv | Round 9: Mannion, Stephen R - Yaniv, Yuval | Sicilian Defense: Four Knights Variation, Exchange Variation | |
| Jun 20, 2024 | Mannion | 0–1 | Rohit S | Teplice 2024 | Sicilian Defense: Najdorf Variation | |
| Apr 30, 2024 | Mannion | ½–½ | Meers | Ostravsky konik 2024 Open A | Sicilian Defense: Kan Variation, Polugaevsky Variation | |
| Apr 29, 2024 | Rudolf | ½–½ | Mannion | Ostravsky konik 2024 Open A | Ruy Lopez: Morphy Defense, Steinitz Deferred | |
| Apr 16, 2024 | Audi Ameya | 1–0 | Mannion | Round 9: Audi Ameya - Mannion, Stephen R | Bishop's Opening: Berlin Defense | |
| Apr 15, 2024 | Mannion | ½–½ | Piasetski | Round 8: Mannion, Stephen R - Piasetski, Leon | Pirc Defense: Austrian Attack, Weiss Variation | |
| Apr 13, 2024 | Silva | * | Mannion | Round 7: Silva, Reinaldo - Mannion, Stephen R | ? | |
| Apr 12, 2024 | Mannion | 0–1 | Padeiro | Round 6: Mannion, Stephen R - Padeiro, Jose | Caro-Kann Defense: Advance Variation, Short Variation | |
| Apr 12, 2024 | Milat | 0–1 | Mannion | Round 5: Milat, Marcel - Mannion, Stephen R | Benko Gambit Accepted: Fully Accepted Variation | |
| Apr 11, 2024 | Mannion | 0–1 | Petrov | Round 4: Mannion, Stephen R - Petrov, Nikita | Sicilian Defense: Taimanov Variation | |
| Apr 10, 2024 | Castelo | 0–1 | Mannion | Round 3: Castelo, Miguel - Mannion, Stephen R | Catalan Opening: Open Defense | |
| Apr 10, 2024 | Mannion | 0–1 | Larkin | Round 2: Mannion, Stephen R - Larkin, Vladyslav | Sicilian Defense: Kan Variation, Swiss Cheese Variation | |
| Apr 9, 2024 | Dias | * | Mannion | Round 1: Dias, Jose Oliveira Gaspar - Mannion, Stephen R | ? | |
| Apr 2, 2024 | Nasuta | 1–0 | Mannion | Menorca Open 2024 | Italian Game: Classical Variation, Giuoco Pianissimo | |
| Mar 20, 2024 | Mannion | ½–½ | Botez | Reykjavik Open 2024 | French Defense: Tarrasch Variation, Morozevich Variation | |
| Mar 19, 2024 | Mammadzada | 1–0 | Mannion | Reykjavik Open 2024 | Ruy Lopez: Morphy Defense, Steinitz Deferred | |
| Mar 18, 2024 | Jin | 1–0 | Mannion | Reykjavik Open 2024 | Benko Gambit Accepted: Modern Variation | |
| Mar 17, 2024 | Mannion | 1–0 | Omarsson | Reykjavik Open 2024 | Sicilian Defense: Lasker-Pelikan Variation | |
| Mar 16, 2024 | Mannion | 0–1 | Nevednichy | Reykjavik Open 2024 | Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation | |
| Mar 3, 2024 | Mannion | 0–1 | Enchev | Round 2: Mannion, Stephen R - Enchev, Ivajlo | Caro-Kann Defense: Advance Variation, Short Variation | |
| Aug 31, 2024 | Mannion | 1–0 | Castellanos Bogalo | Round 9: Mannion, Stephen R - Castellanos Bogalo, Antonio | Elephant Gambit: Maróczy Gambit | |
| Aug 30, 2024 | Rossi | ½–½ | Mannion | Round 8: Rossi, Gabriele Valerio - Mannion, Stephen R | Italian Game: Classical Variation, Center Attack | |
| Aug 29, 2024 | Mannion | ½–½ | Bastos Gonzalez | Round 7: Mannion, Stephen R - Bastos Gonzalez, Gonzalo | Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation, Novosibirsk Variation | |
| Aug 28, 2024 | Fier | 1–0 | Mannion | Round 6: Fier, Alexandr - Mannion, Stephen R | English Opening: Agincourt Defense, Wimpy System | |
| Aug 27, 2024 | Mannion | 1–0 | Saine | Round 5: Mannion, Stephen R - Saine, Zachary | Italian Game: Classical Variation, Greco Gambit, Traditional Line | |