| 9 ago 2026 | Godena, Michele 2446 | Arnold, Rhys 2262 | 1-0 | B22 Defensa Siciliana: Alapin Variation, Barmen Defense | Spilimbergo Master 2026 | 55 | Ver |
| 23 jul 2026 | Aguero Jimenez, Luis Lazaro 2472 | Arnold, Rhys 2262 | 1-0 | A34 Apertura Inglesa: Symmetrical Variation, Rubinstein Variation | 50è Open Internacional d'Escacs 'Vila de Sitges' | 46 | Ver |
| 21 jun 2026 | Pham, Khoi 2422 | Arnold, Rhys 2249 | ½-½ | D85 Defensa Grünfeld: Exchange Variation, Modern Exchange Variation, Kramnik's Line | HSG Open 2026 A | 39 | Ver |
| 21 jun 2026 | Groenewoud, Joel 2139 | Arnold, Rhys 2249 | 0-1 | B56 Defensa Siciliana: Classical Variation | HSG Open 2026 A | 38 | Ver |
| 21 jun 2026 | Arnold, Rhys 2249 | Midem, Ismail Eren 2026 | 1-0 | C41 Defensa Philidor: Lion Variation | HSG Open 2026 A | 32 | Ver |
| 19 jun 2026 | Hommes, Elmar 2094 | Arnold, Rhys 2249 | 1-0 | D96 Defensa Grünfeld: Russian Variation | HSG Open 2026 A | 75 | Ver |
| 30 abr 2026 | Arnold, Rhys 2285 | Ritzerveld, Noah 2212 | 0-1 | C69 Apertura Española (Ruy López): Exchange Variation, Normal Variation | Dutch Youth Championship 2026 | U18 | 38 | Ver |
| 29 abr 2026 | Smeets, Kobe 2315 | Arnold, Rhys 2315 | ½-½ | B28 Defensa Siciliana: O'Kelly Variation, Réti System | Dutch Youth Championship 2026 | U18 | 75 | Ver |
| 29 abr 2026 | Arnold, Rhys 2315 | Heus, Daan 2049 | 1-0 | C63 Apertura Española (Ruy López): Schliemann Defense | Dutch Youth Championship 2026 | U18 | 78 | Ver |
| 26 abr 2026 | Arnold, Rhys 2315 | Van Arendonk, Polle 2060 | ½-½ | C84 Apertura Española (Ruy López): Closed, Martinez Variation | Dutch Youth Championship 2026 | U18 | 80 | Ver |
| 25 abr 2026 | Fallaux, Storm 2034 | Arnold, Rhys 2315 | ½-½ | B54 Defensa Siciliana: Modern Variations, Main Line | Dutch Youth Championship 2026 | U18 | 28 | Ver |
| 25 abr 2026 | Arnold, Rhys 2315 | Dinanath, Hrdya 2107 | 0-1 | B90 Defensa Siciliana: Najdorf Variation, English Attack | Dutch Youth Championship 2026 | U18 | 62 | Ver |
| 11 abr 2026 | Swinkels, Robin 2482 | Arnold, Rhys 2315 | 1-0 | D78 Defensa Neogrünfeld: Classical Variation, Original Defense | Dutch Meesterklasse 2025/26 | 53 | Ver |
| 30 mar 2026 | Arnold, Rhys 2291 | Van der Stricht, Geert 2279 | 1-0 | B90 Defensa Siciliana: Najdorf Variation | KNSB competitie 2025/2026 | 44 | Ver |
| 7 mar 2026 | Arnold, Rhys 2291 | Schoppen, Casper 2576 | 0-1 | B12 Defensa Caro-Kann: Advance Variation, Botvinnik-Carls Defense | Dutch Meesterklasse 2025/26 | 46 | Ver |
| 7 feb 2026 | Arnold, Rhys 2288 | Suvorov, Alexander 2413 | 1-0 | B75 Defensa Siciliana: Dragon Variation, Yugoslav Attack, Early Deviations | Dutch Meesterklasse 2025/26 | 36 | Ver |
| 28 dic 2025 | Arnold, Rhys 2336 | Raczek, Krzysztof 2489 | 0-1 | B12 Defensa Caro-Kann: Advance Variation, Short Variation | Rilton Cup | 40 | Ver |
| 26 dic 2025 | Beukema, Stefan 2394 | Arnold, Rhys 2336 | ½-½ | A15 Apertura Inglesa: Anglo-Indian Defense | Dutch Meesterklasse 2025/26 | 40 | Ver |
| 22 nov 2025 | Arnold, Rhys 2286 | Ernst, Sipke 2518 | ½-½ | C78 Apertura Española (Ruy López): Morphy Defense, Møller Variation | Dutch Meesterklasse 2025/26 | 59 | Ver |
| 7 nov 2025 | Rustamov, Rustam 2314 | Arnold, Rhys 2286 | 1-0 | B66 Defensa Siciliana: Richter-Rauzer Variation, Neo-Modern Variation, Early Deviations | European Youth Chess Championship 2025 | U16 | 74 | Ver |
