| 16 ago 2026 | Sandberg, Lucas 2320 | Kleist, Axel 2170 | ½-½ | A00 Van Geet Opening | West Coast Chess Open by Mediegymnasiet 2026 | 31 | Ver |
| 16 ago 2026 | Akesson, Ralf 2317 | Sandberg, Lucas 2320 | 0-1 | A42 Modern Defense: Averbakh System | West Coast Chess Open by Mediegymnasiet 2026 | 51 | Ver |
| 15 ago 2026 | Sandberg, Lucas 2320 | Berling, Egil 2145 | 1-0 | E62 King's Indian Defense: Fianchetto Variation, Delayed Fianchetto | West Coast Chess Open by Mediegymnasiet 2026 | 30 | Ver |
| 15 ago 2026 | Nilsson, Bengt 2089 | Sandberg, Lucas 2320 | 0-1 | A41 Robatsch Defense: Rossolimo Variation | West Coast Chess Open by Mediegymnasiet 2026 | 42 | Ver |
| 14 ago 2026 | Sandberg, Lucas 2320 | Ivenholt, Niklas 2027 | 1-0 | A00 Van Geet Opening: Reversed Nimzowitsch | West Coast Chess Open by Mediegymnasiet 2026 | 19 | Ver |
| 14 ago 2026 | Lindholm, Gustav 2097 | Sandberg, Lucas 2320 | 1-0 | E16 Queen's Indian Defense: Capablanca Variation | West Coast Chess Open by Mediegymnasiet 2026 | 68 | Ver |
| 14 ago 2026 | Sandberg, Lucas 2320 | Morell, Ludvig 2049 | 1-0 | B50 Sicilian Defense: Delayed Alapin Variation, with d6 | West Coast Chess Open by Mediegymnasiet 2026 | 36 | Ver |
| 4 jul 2026 | Grahn, Vidar 2245 | Sandberg, Lucas 2305 | 1-0 | A40 Queen's Pawn Game: Modern Defense | Särspel parti 2: Grahn, Vidar - Sandberg, Lucas | 40 | Ver |
| 4 jul 2026 | Sandberg, Lucas 2305 | Grahn, Vidar 2245 | ½-½ | A00 Van Geet Opening | Särspel parti 1: Sandberg, Lucas - Grahn, Vidar | 46 | Ver |
| 4 jul 2026 | Ral Lustig, Melvin 2235 | Sandberg, Lucas 2305 | 0-1 | B08 Pirc Defense: Classical Variation, Schlechter Variation | Schack-SM 2026 | Junior-SM | 46 | Ver |
| 3 jul 2026 | Sandberg, Lucas 2305 | Lilliehook, Victor 2177 | 1-0 | A06 Zukertort Opening: Reversed Mexican Defense | Schack-SM 2026 | Junior-SM | 75 | Ver |
| 2 jul 2026 | Morell, Oscar 2171 | Sandberg, Lucas 2305 | 0-1 | B06 Modern Defense: Lizard Defense, Mittenberger Gambit | Schack-SM 2026 | Junior-SM | 32 | Ver |
| 2 jul 2026 | Sandberg, Lucas 2305 | Strom-Engdahl, Alexander 2308 | ½-½ | C41 Philidor Defense: Lion Variation | Schack-SM 2026 | Junior-SM | 45 | Ver |
| 1 jul 2026 | Sandberg, Lucas 2305 | Granath, Jonas 2023 | 1-0 | A00 Sodium Attack | Schack-SM 2026 | SM-Blixten | 65 | Ver |
| 1 jul 2026 | Malmquist, Neo 2029 | Sandberg, Lucas 2305 | 1-0 | B00 St. George Defense | Schack-SM 2026 | SM-Blixten | 27 | Ver |
| 1 jul 2026 | Lindvall, Johannes 2057 | Sandberg, Lucas 2305 | 0-1 | B10 Caro-Kann Defense: Breyer Variation | Schack-SM 2026 | SM-Blixten | 32 | Ver |
| 1 jul 2026 | Sandberg, Lucas 2305 | Kingsley, Elias 2087 | 0-1 | B28 Sicilian Defense: O'Kelly Variation, Venice System | Schack-SM 2026 | SM-Blixten | 59 | Ver |
| 1 jul 2026 | Nilsson, Oliver 2195 | Sandberg, Lucas 2305 | 0-1 | B81 Sicilian Defense: Scheveningen Variation, Keres Attack | Schack-SM 2026 | SM-Blixten | 46 | Ver |
| 1 jul 2026 | Dingertz, Gustav 2101 | Sandberg, Lucas 2305 | 1-0 | B15 Caro-Kann Defense: Gurgenidze System | Schack-SM 2026 | SM-Blixten | 26 | Ver |
| 1 jul 2026 | Sandberg, Lucas 2305 | Dingertz, Erik 2211 | ½-½ | A00 Van Geet Opening | Schack-SM 2026 | SM-Blixten | 51 | Ver |