| 29 ago 2026 | Mannion, Stephen R 2206 | Gonzalez Pinar, Adrian 2103 | ½-½ | C03 Defensa Francesa: Tarrasch Variation, Morozevich Variation | Maia Chess Open 2026 | Masters | 30 | Ver |
| 28 ago 2026 | Kaewpitakkun, Pantham 2098 | Mannion, Stephen R 2206 | ½-½ | C42 Defensa Petrov: Classical Attack, Marshall Variation | Maia Chess Open 2026 | Masters | 40 | Ver |
| 1 ago 2026 | Bazakutsa, Svyatoslav 2495 | Mannion, Stephen R 2209 | 1-0 | A20 Apertura Inglesa: King's English Variation | 2026 British Chess Championships: Championship | 38 | Ver |
| 3 jul 2026 | Relange, Eloi 2430 | Mannion, Stephen R 2209 | 1-0 | D24 Gambito de Dama aceptado | 11 ème Open international de Porticcio | 18 | Ver |
| 2 jul 2026 | Minde, Timothe 2045 | Mannion, Stephen R 2209 | 0-1 | C44 Apertura Escocesa: Cochrane-Shumov Defense | 11 ème Open international de Porticcio | 30 | Ver |
| 1 jul 2026 | Mannion, Stephen R 2209 | Sumets, Andrey 2501 | 0-1 | B19 Defensa Caro-Kann: Classical Variation, Spassky Variation | 11 ème Open international de Porticcio | 49 | Ver |
| 30 jun 2026 | Durand-Benmoussa, Roman 2100 | Mannion, Stephen R 2220 | 0-1 | D20 Gambito de Dama aceptado: Central Variation, McDonnell Defense | 11 ème Open international de Porticcio | 66 | Ver |
| 30 jun 2026 | Mannion, Stephen R 2220 | Thibous, Mathis 2195 | ½-½ | B06 Defensa Moderna: Pseudo-Austrian Attack | 11 ème Open international de Porticcio | 42 | Ver |
| 29 jun 2026 | Roebers, Jan 2079 | Mannion, Stephen R 2220 | 0-1 | A20 Apertura Inglesa: King's English Variation | 11 ème Open international de Porticcio | 58 | Ver |
| 10 jun 2026 | Mannion, Stephen R 2220 | Hjartarson, Johann 2467 | 0-1 | B09 Defensa Pirc: Austrian Attack, Weiss Variation | European Senior Chess Championship 2026 | 50+ | 36 | Ver |
| 9 jun 2026 | Fabiano, Giuseppe Edoardo 2081 | Mannion, Stephen R 2220 | ½-½ | D20 Gambito de Dama aceptado: Accelerated Mannheim Variation | European Senior Chess Championship 2026 | 50+ | 9 | Ver |
| 8 jun 2026 | Mannion, Stephen R 2220 | Dunnington, Angus J 2196 | ½-½ | B01 Defensa Escandinava: Gubinsky-Melts Defense | European Senior Chess Championship 2026 | 50+ | 12 | Ver |
| 7 jun 2026 | Van der Werf, Mark 2384 | Mannion, Stephen R 2220 | ½-½ | A29 Apertura Inglesa: King's English Variation, Four Knights Variation, Fianchetto Line, with Nb6 | European Senior Chess Championship 2026 | 50+ | 37 | Ver |
| 6 jun 2026 | Mannion, Stephen R 2220 | Lacasa Diaz, Josep Anton 2325 | ½-½ | B45 Defensa Siciliana: Taimanov Variation | European Senior Chess Championship 2026 | 50+ | 8 | Ver |
| 5 jun 2026 | Mannion, Stephen R 2220 | Termeulen, Albert 2004 | 1-0 | B04 Defensa Alekhine: Modern Variation, Alburt Variation | European Senior Chess Championship 2026 | 50+ | 40 | Ver |
| 4 jun 2026 | Poess, Frank 2093 | Mannion, Stephen R 2220 | ½-½ | D27 Gambito de Dama aceptado: Furman Variation | European Senior Chess Championship 2026 | 50+ | 13 | Ver |
| 3 jun 2026 | Mannion, Stephen R 2220 | Delaney, John 2054 | ½-½ | C09 Defensa Francesa: Tarrasch Variation, Open System, Main Line | European Senior Chess Championship 2026 | 50+ | 41 | Ver |
| 30 mar 2026 | Mannion, Stephen R 2202 | Griffith, Kyron 2415 | ½-½ | C07 Defensa Francesa: Tarrasch Variation, Chistyakov Defense | Reykjavik Open 2026 | 32 | Ver |
| 29 mar 2026 | Chen, Qi b 2484 | Mannion, Stephen R 2202 | ½-½ | A20 Apertura Inglesa: King's English Variation | Reykjavik Open 2026 | 39 | Ver |
| 28 mar 2026 | Mannion, Stephen R 2202 | Injac, Teodora 2417 | ½-½ | B32 Defensa Siciliana: Kalashnikov Variation | Reykjavik Open 2026 | 20 | Ver |