| Jun 30, 2026 | Sandberg | ½–½ | Kleist | Round 4: Sandberg, Lucas - Kleist, Axel | English Opening: Anglo-Indian Defense, Queen's Knight Variation | |
| Jun 29, 2026 | Grahn | 1–0 | Sandberg | Round 3: Grahn, Vidar - Sandberg, Lucas | Queen's Indian Accelerated | |
| Jun 28, 2026 | Sandberg | ½–½ | Valcu | Round 2: Sandberg, Lucas - Valcu, Lavinia | English Opening: Neo-Catalan | |
| Jun 27, 2026 | Ljungros | 0–1 | Sandberg | Round 1: Ljungros, Lo - Sandberg, Lucas | Zukertort Opening: Quiet System | |
| May 17, 2026 | Sandberg | 0–1 | Vandenhole | Round 9: Sandberg, Lucas - Vandenhole, Kobe | Van Geet Opening | |
| May 16, 2026 | Lucas | 1–0 | Sandberg | Round 8: Lucas, Arthur - Sandberg, Lucas | French Defense: Rubinstein Variation | |
| May 16, 2026 | Sandberg | ½–½ | Fuhrmann | Round 7: Sandberg, Lucas - Fuhrmann, Bahne | French Defense: Two Knights Variation | |
| May 15, 2026 | Sandberg | ½–½ | Falkevall | Round 5: Sandberg, Lucas - Falkevall, Axel | King's Indian Defense: Fianchetto Variation, Yugoslav Variation, Advance Line | |
| May 14, 2026 | Vantorre | 1–0 | Sandberg | Round 4: Vantorre, Nils - Sandberg, Lucas | Modern Defense: Gurgenidze Defense | |
| May 14, 2026 | Sandberg | 1–0 | Kotyk | Round 3: Sandberg, Lucas - Kotyk, Michael | Van Geet Opening | |
| May 14, 2026 | Strom-Engdahl | 0–1 | Sandberg | Round 2: Strom-Engdahl, Alexander - Sandberg, Lucas | English Opening: Anglo-Indian Defense, Queen's Indian Formation | |
| May 14, 2026 | Jalving | ½–½ | Sandberg | Round 1: Jalving, August - Sandberg, Lucas | Nimzowitsch Defense: Declined Variation | |
| May 14, 2026 | Ragnarsson | 1–0 | Sandberg | Round 6: Ragnarsson, Dagur - Sandberg, Lucas | Queen's Pawn Game: Modern Defense | |
| Apr 6, 2026 | Sandberg | ½–½ | Olsson | The Paskturneringen 2026 | Van Geet Opening | |
| Apr 5, 2026 | Blomqvist | 1–0 | Sandberg | The Paskturneringen 2026 | French Defense: Rubinstein Variation | |
| Apr 5, 2026 | Ostlund | 0–1 | Sandberg | The Paskturneringen 2026 | Modern Defense: Lizard Defense, Mittenberger Gambit | |
| Apr 4, 2026 | Sandberg | ½–½ | Soderstrom | The Paskturneringen 2026 | Four Knights Game | |
| Apr 4, 2026 | Meszaros | 0–1 | Sandberg | The Paskturneringen 2026 | Nimzowitsch Defense: Scandinavian Variation, Exchange Variation | |
| Apr 3, 2026 | Sandberg | 1–0 | Holst | The Paskturneringen 2026 | Zukertort Opening | |
| Apr 3, 2026 | Morell | 0–1 | Sandberg | The Paskturneringen 2026 | Caro-Kann Defense: Gurgenidze System | |
| Apr 3, 2026 | Sandberg | 1–0 | Wickstrom | The Paskturneringen 2026 | Modern Defense: Standard Line | |
| Mar 8, 2026 | Sammalvuo | ½–½ | Sandberg | Rond 9: Sammalvuo, Tapani - Sandberg, Lucas | Queen's Pawn Game: Modern Defense | |
| Jan 18, 2026 | Sandberg | 1–0 | Johansson | Rond 6: Sandberg, Lucas - Johansson, Carl Fredrik | Three Knights Opening: Steinitz Defense | |
| Jan 18, 2026 | Sandberg | 0–1 | Crevatin | Rond 5: Sandberg, Lucas - Crevatin, Leo | English Opening: Agincourt Defense | |
| Jan 16, 2026 | Arnelind | 0–1 | Sandberg | Rond 4: Arnelind, Mikael - Sandberg, Lucas | Modern Defense: Averbakh System | |
| Nov 29, 2025 | Johansson | ½–½ | Sandberg | Rond 2: Johansson, Thomas - Sandberg, Lucas | Nimzowitsch Defense: Williams Variation | |
| Nov 23, 2025 | Sandberg | 1–0 | Ljung | The Juniorallsvenskan 2025, Division I | English Opening: Anglo-Indian Defense, King's Knight Variation | |
| Nov 23, 2025 | Havner | 0–1 | Sandberg | The Juniorallsvenskan 2025, Division I | Four Knights Game: Gunsberg Variation | |
| Nov 22, 2025 | Morell | 0–1 | Sandberg | The Juniorallsvenskan 2025, Division I | French Defense: Two Knights Variation | |
| Nov 22, 2025 | Cibo | 0–1 | Sandberg | The Juniorallsvenskan 2025, Division I | Modern Defense: Standard Defense | |
| Nov 22, 2025 | Sandberg | 1–0 | Willstedt | The Juniorallsvenskan 2025, Division I | Nimzo-Larsen Attack | |
| Nov 5, 2025 | kiladze | 1–0 | Sandberg | Round 7: kiladze, Luka - Sandberg, Lucas | French Defense: King's Indian Attack | |
| Nov 2, 2025 | Davudov | 1–0 | Sandberg | Round 5: Davudov, Tunar - Sandberg, Lucas | Modern Defense: Gurgenidze Defense | |
| Oct 12, 2025 | Bergman | 1–0 | Sandberg | Skol-SM 2025 Kalmar | Caro-Kann Defense: Accelerated Panov Attack | |
| Oct 11, 2025 | Sandberg | ½–½ | Nagy | Skol-SM 2025 Kalmar | Four Knights Game | |
| Oct 11, 2025 | Blom | 0–1 | Sandberg | Skol-SM 2025 Kalmar | French Defense: Horwitz Attack, Papa-Ticulat Gambit | |
| Oct 11, 2025 | Sandberg | 0–1 | Tripathi | Skol-SM 2025 Kalmar | Mieses Opening | |
| Oct 11, 2025 | Malmquist | 0–1 | Sandberg | Skol-SM 2025 Kalmar | Nimzowitsch Defense: Williams Variation | |
| Oct 10, 2025 | Sandberg | 1–0 | Gore | Skol-SM 2025 Kalmar | Van Geet Opening | |
| Sep 26, 2025 | Sandberg | 1–0 | Eriksson | Blixt-SM 2025 | Grob Opening | |
| Sep 26, 2025 | Muntean | 1–0 | Sandberg | Blixt-SM 2025 | Caro-Kann Defense | |
| Sep 26, 2025 | Sandberg | 1–0 | Tornberg | Blixt-SM 2025 | Four Knights Game | |
| Sep 26, 2025 | Bohman Karlholm | ½–½ | Sandberg | Blixt-SM 2025 | Queen's Pawn Game: Modern Defense | |
| Sep 26, 2025 | Sandberg | 0–1 | Persson | Blixt-SM 2025 | Van Geet Opening | |
| Sep 26, 2025 | Bergdahl | 0–1 | Sandberg | Blixt-SM 2025 | Caro-Kann Defense | |
| Sep 26, 2025 | Sandberg | ½–½ | Iwraeus | Blixt-SM 2025 | French Defense: Two Knights Variation | |
| Sep 26, 2025 | Dingertz | 0–1 | Sandberg | Blixt-SM 2025 | Queen's Pawn Game: Modern Defense | |
| Sep 26, 2025 | Sandberg | 0–1 | Lilliehook | Blixt-SM 2025 | Mieses Opening | |
| May 4, 2025 | Sandberg | ½–½ | Jarlskov | SonFlow grupp2 2-5 | King's Indian Attack | |
| May 4, 2025 | Pedersen | 0–1 | Sandberg | SonFlow grupp2 2-5 | Caro-Kann Defense | |
| May 3, 2025 | Sandberg | ½–½ | Prieb | SonFlow grupp2 2-5 | Sicilian Defense: Delayed Alapin Variation, with d6 | |
| May 3, 2025 | Sandmann | 0–1 | Sandberg | SonFlow grupp2 2-5 | Nimzowitsch Defense: Declined Variation | |
| May 2, 2025 | Sandberg | 1–0 | Light | SonFlow grupp2 2-5 | Zukertort Opening: Sicilian Invitation | |
| Apr 21, 2025 | Arman | 1–0 | Sandberg | The Paskturneringen 2025 | Caro-Kann Defense: Gurgenidze System | |
| Apr 19, 2025 | Sandberg | ½–½ | Grahn | The Paskturneringen 2025 | Nimzo-Larsen Attack: Classical Variation | |
| Feb 9, 2025 | Reid | 1–0 | Sandberg | Elite Hotels Open 2025 | Zukertort Opening: Kingside Fianchetto | |
| Feb 7, 2025 | Sandberg | 0–1 | Cederstam | Elite Hotels Open 2025 | Four Knights Game | |
| Sep 8, 2024 | Kallen | 1–0 | Sandberg | The Kvibergspelen 2024 | Modern Defense | |
| Sep 7, 2024 | Sandberg | ½–½ | Nilsson | The Kvibergspelen 2024 | Zukertort Opening: Dutch Variation | |
| Sep 7, 2024 | Laith | ½–½ | Sandberg | The Kvibergspelen 2024 | Sicilian Defense: Dragon Variation, Yugoslav Attack, Modern Line | |
| Sep 6, 2024 | Sorensen | 1–0 | Sandberg | The Kvibergspelen 2024 | Sicilian Defense: Chekhover Variation | |
| Jul 4, 2024 | Sandberg | ½–½ | Hakanson | Schack-SM 2024: SM-blixten | Pirc Defense | |
| Jul 4, 2024 | Seo | 1–0 | Sandberg | Schack-SM 2024: SM-blixten | Anderssen's Opening | |
| Apr 14, 2024 | Sandberg | 0–1 | Storme | Dalheimers Hus Rapid Open | Ruy Lopez: Fianchetto Defense | |
| Apr 14, 2024 | Sandberg | 0–1 | Brzezinski | Dalheimers Hus Rapid Open | French Defense: Two Knights Variation | |
| Apr 14, 2024 | Hamark | ½–½ | Sandberg | Dalheimers Hus Rapid Open | Sicilian Defense: Closed, Traditional | |
| Sep 15, 2023 | Bohman Karlholm | 1–0 | Sandberg | The Kvibergspelen 2023 | Nimzo-Indian Defense: Romanishin Variation | |
| — | Sandberg | 1–0 | Magnussen | Nordic Youth Chess Championship | Semi-Slav Defense: Chigorin Defense | |
| — | Sandberg | 1–0 | Slavensky | Nordic Youth Chess Championship | Nimzo-Larsen Attack: Indian Variation | |
| — | Sandberg | 1–0 | Rosell | Avenyn Open 2025 | Van Geet Opening | |
| — | Sandberg | 1–0 | Mejvik | Avenyn Open 2025 | Van Geet Opening | |
| — | Sandberg | ½–½ | Pantzar | Avenyn Open 2025 | English Opening: Agincourt Defense, Kurajica Defense | |
| — | Sandberg | 1–0 | Cibo | Avenyn Open 2025 | Van Geet Opening | |
| — | Sandberg | ½–½ | Arman | Avenyn Open 2025 | Zukertort Opening: Pirc Invitation | |
| — | Ostensen | 1–0 | Sandberg | Nordic Youth Chess Championship | Queen's Indian Defense: Classical Variation | |
| — | Religa | 1–0 | Sandberg | Nordic Youth Chess Championship | French Defense: Schlechter Variation | |
| — | Valpas | 1–0 | Sandberg | Nordic Youth Chess Championship | Modern Defense: Standard Defense | |
| — | Oskarsson | 0–1 | Sandberg | Nordic Youth Chess Championship | English Opening: Four Knights System, Nimzowitsch Variation | |
| — | Quinn | 0–1 | Sandberg | Avenyn Open 2025 | Queen's Pawn Game: Modern Defense | |
| — | Ljungros | 0–1 | Sandberg | Avenyn Open 2025 | Caro-Kann Defense | |
| — | Falkevall | 1–0 | Sandberg | Avenyn Open 2025 | French Defense: Advance Variation, Extended Bishop Swap | |