| 5 ago 2026 | Agter, Frank 2182 | Kamphuis, Jasper 2079 | 1-0 | A48 East Indian Defense | Scheldemond Schaaktoernooi 2026 | 65 | Ver |
| 24 may 2026 | Kamphuis, Jasper 2134 | Jellema, Pieter 2193 | 0-1 | B15 Defensa Caro-Kann: Forgacs Variation | Qualification Dutch Championship 2026 | 66 | Ver |
| 24 may 2026 | Den Hartog, Marijn 2209 | Kamphuis, Jasper 2134 | 0-1 | C26 Apertura Vienesa: Mieses Variation | Qualification Dutch Championship 2026 | 35 | Ver |
| 24 may 2026 | Kamphuis, Jasper 2134 | Aravindhan, Achyuth 2213 | ½-½ | B33 Defensa Siciliana: Lasker-Pelikan Variation, Sveshnikov Variation, Chelyabinsk Variation | Qualification Dutch Championship 2026 | 61 | Ver |
| 24 may 2026 | Grochal, Joey 2253 | Kamphuis, Jasper 2134 | 0-1 | E92 Defensa India de Rey: Petrosian Variation, Stein Defense | Qualification Dutch Championship 2026 | 68 | Ver |
| 24 may 2026 | Kamphuis, Jasper 2134 | Bekker, Stefan 2367 | 0-1 | B90 Defensa Siciliana: Najdorf Variation, Lipnitsky Attack | Qualification Dutch Championship 2026 | 70 | Ver |
| 24 may 2026 | Pel, Bonno 2286 | Kamphuis, Jasper 2134 | 1-0 | A00 Apertura Húngara: Reversed Modern Defense | Qualification Dutch Championship 2026 | 33 | Ver |
| 23 may 2026 | Kamphuis, Jasper 2134 | Simenon, Jozef 2288 | ½-½ | B06 Defensa Moderna: Norwegian Defense | Qualification Dutch Championship 2026 | 70 | Ver |
| 23 may 2026 | Terlouw, Wouter 2259 | Kamphuis, Jasper 2134 | 1-0 | A45 Ataque Trompowsky: Classical Defense, Big Center Variation | Qualification Dutch Championship 2026 | 77 | Ver |
| 23 may 2026 | Kamphuis, Jasper 2134 | Van der Werf, Mark 2384 | 0-1 | C44 Apertura Escocesa: Scotch Gambit, Advance Variation | Qualification Dutch Championship 2026 | 42 | Ver |
| 23 may 2026 | Slagboom, Leandro 2334 | Kamphuis, Jasper 2134 | 1-0 | C70 Apertura Española (Ruy López): Morphy Defense, Norwegian Variation | Qualification Dutch Championship 2026 | 38 | Ver |
| 23 may 2026 | Kamphuis, Jasper 2134 | Ootes, Lars 2363 | 0-1 | B06 Defensa Moderna: Standard Defense | Qualification Dutch Championship 2026 | 43 | Ver |
| 23 may 2026 | De Boer, Eelke 2406 | Kamphuis, Jasper 2134 | 1-0 | C70 Apertura Española (Ruy López): Morphy Defense, Norwegian Variation | Qualification Dutch Championship 2026 | 47 | Ver |
| 19 may 2026 | Grooten, Tommy 2356 | Kamphuis, Jasper 2134 | 1-0 | A09 Apertura Réti: Advance Variation, Michel Gambit | Qualification Dutch Championship 2026 | 26 | Ver |
| 14 may 2026 | Leenes, Robert 2002 | Kamphuis, Jasper 2134 | 1-0 | C47 Apertura de los Cuatro Caballos: Scotch Variation Accepted | Weekendtoernooi GC & PK NOSBO 2026 | 81 | Ver |
| 1 ene 2026 | Lopes, Samuel 2077 | Kamphuis, Jasper 2146 | 0-1 | E64 Defensa India de Rey: Fianchetto Variation, Yugoslav Variation, Rare Line | Chessfestival Groningen 2025 Open A | 62 | Ver |
| 28 dic 2025 | Kamphuis, Jasper 2158 | Dordevic, Tom 2268 | 0-1 | B90 Defensa Siciliana: Najdorf Variation, Lipnitsky Attack | Chessfestival Groningen 2025 | Open A | 28 | Ver |
| 26 dic 2025 | Kamphuis, Jasper 2158 | De Boer, Eelke 2436 | 0-1 | B90 Defensa Siciliana: Najdorf Variation, Lipnitsky Attack | Chessfestival Groningen 2025 | Open A | 38 | Ver |
| 24 dic 2025 | Wempe, Joost 2212 | Kamphuis, Jasper 2158 | 1-0 | A49 Defensa India: Przepiorka Variation | Chessfestival Groningen 2025 | Open A | 31 | Ver |
| 24 dic 2025 | Kamphuis, Jasper 2158 | Jin, Yueheng 2387 | 0-1 | C44 Apertura Escocesa: Scotch Gambit, Advance Variation | Chessfestival Groningen 2025 | Open A | 38 | Ver |