| 27 jun 2026 | Groenewoud, Joel 2139 | Lopez, Jasel 2366 | 0-1 | B48 Defensa Siciliana: Taimanov Variation, Bastrikov Variation, English Attack | HWP Inholland Weekendtoernooi | 35 | Ver |
| 21 jun 2026 | Groenewoud, Joel 2139 | Arnold, Rhys 2249 | 0-1 | B56 Defensa Siciliana: Classical Variation | HSG Open 2026 A | 38 | Ver |
| 19 jun 2026 | Groenewoud, Joel 2139 | Terlouw, Wouter 2306 | 0-1 | B33 Defensa Siciliana: Lasker-Pelikan Variation | HSG Open 2026 A | 56 | Ver |
| 15 may 2026 | Groenewoud, Joel 2084 | Ootes, Lars 2363 | 0-1 | B06 Defensa Moderna: Standard Defense | Utrecht Open 2026 | Group A | 47 | Ver |
| 1 may 2026 | Aravindhan, Achyuth 2213 | Groenewoud, Joel 2084 | 1-0 | B00 St. George Defense: Polish Variation | Dutch Youth Championship 2026 | U16 | 34 | Ver |
| 1 may 2026 | Groenewoud, Joel 2084 | Baarspul, Bram 2173 | 0-1 | B91 Defensa Siciliana: Najdorf Variation, Zagreb Variation | Dutch Youth Championship 2026 | U16 | 34 | Ver |
| 1 may 2026 | Kurt, Sascha 2325 | Groenewoud, Joel 2084 | 0-1 | B12 Defensa Caro-Kann: Advance Variation, Botvinnik-Carls Defense | Dutch Youth Championship 2026 | U16 | 40 | Ver |
| 1 may 2026 | Groenewoud, Joel 2084 | Zecha, Oscar 2176 | 0-1 | C79 Apertura Española (Ruy López): Morphy Defense, Steinitz Deferred | Dutch Youth Championship 2026 | U16 | 34 | Ver |
| 30 abr 2026 | Frederiks, Jesse 2037 | Groenewoud, Joel 2084 | 0-1 | B12 Defensa Caro-Kann: Maróczy Variation | Dutch Youth Championship 2026 | U16 | 45 | Ver |
| 29 abr 2026 | Groenewoud, Joel 2114 | Kurt, Sascha 2280 | 0-1 | B91 Defensa Siciliana: Najdorf Variation, Zagreb Variation | Dutch Youth Championship 2026 | U16 | 66 | Ver |
| 26 abr 2026 | Aravindhan, Achyuth 2277 | Groenewoud, Joel 2114 | ½-½ | B15 Defensa Caro-Kann: Tartakower Variation | Dutch Youth Championship 2026 | U16 | 50 | Ver |
| 12 abr 2026 | Groenewoud, Joel 2114 | Chua, Ethan 2168 | 0-1 | B32 Defensa Siciliana: Kalashnikov Variation | Dutch Youth Championship 2026 | U16 | 39 | Ver |
| 21 feb 2026 | Groenewoud, Joel 2029 | Ritzerveld, Noah 2236 | 0-1 | C86 Apertura Española (Ruy López): Closed, Worrall Attack, Castling Line | Noteboomtoernooi 2026 | Group A | 55 | Ver |
| 24 oct 2025 | Groenewoud, Joel 2175 | Abel Sajan 2046 | 0-1 | B90 Defensa Siciliana: Najdorf Variation, English Attack | Hoogeveen 2025 | Open | 73 | Ver |
| 21 oct 2025 | Moghe Parth 2199 | Groenewoud, Joel 2175 | 1-0 | B10 Defensa Caro-Kann: Accelerated Panov Attack, Modern Variation | Hoogeveen 2025 | Open | 37 | Ver |
| 21 oct 2025 | Groenewoud, Joel 2175 | Hoffman, Ron 2027 | ½-½ | C02 Defensa Francesa: Advance Variation, Paulsen Attack | Hoogeveen 2025 | Open | 21 | Ver |