| Apr 2, 2026 | Asauskas | 1–0 | Jacunskas | Round 9: Asauskas, Henrikas - Jacunskas, Marius | Alekhine Defense: Sämisch Attack | |
| Apr 1, 2026 | Jacunskas | ½–½ | Navickas | Round 8: Jacunskas, Marius - Navickas, Tadas | French Defense: Advance Variation, Milner-Barry Gambit, Hector Variation | |
| Mar 31, 2026 | Juknis | ½–½ | Jacunskas | Round 7: Juknis, Paulius - Jacunskas, Marius | Rapport-Jobava System | |
| Mar 31, 2026 | Jacunskas | ½–½ | Dienine | Round 6: Jacunskas, Marius - Dienine, Daiva | Sicilian Defense: Taimanov Variation | |
| Mar 30, 2026 | Latvenas | 0–1 | Jacunskas | Round 5: Latvenas, Lukas - Jacunskas, Marius | Catalan Opening: Closed | |
| Mar 30, 2026 | Jacunskas | 0–1 | Indriunas | Round 4: Jacunskas, Marius - Indriunas, Matas | Sicilian Defense: Classical Variation | |
| Mar 29, 2026 | Zaksaite | ½–½ | Jacunskas | Round 3: Zaksaite, Salomeja - Jacunskas, Marius | English Opening: Agincourt Defense, Neo-Catalan Declined | |
| Mar 29, 2026 | Jacunskas | ½–½ | Greicius | Round 2: Jacunskas, Marius - Greicius, Pijus | French Defense: Advance Variation, Paulsen Attack | |
| Mar 22, 2026 | Ser | ½–½ | Jacunskas | Round 7: Ser, Daniel - Jacunskas, Marius | Queen's Gambit Declined: Ragozin Defense, Alekhine Variation | |
| Mar 21, 2026 | Agafonov | 1–0 | Jacunskas | Round 6: Agafonov, Yuri Dr - Jacunskas, Marius | Bird Opening: Dutch Variation | |
| Nov 15, 2025 | Farzaliev | 0–1 | Jacunskas | Round 9: Farzaliev, Elnur - Jacunskas, Marius | Indian Defense: London System | |
| Nov 15, 2025 | Stremavicius | 1–0 | Jacunskas | Round 3: Stremavicius, Pijus - Jacunskas, Marius | Hungarian Opening | |
| — | Jacunskas | 0–1 | Auskalnis | Vilnius Open Chess Championship 2024 B | Ponziani Opening | |
| — | Jacunskas | 0–1 | Bondar | Vilnius Open Chess Championship 2024 B | Sicilian Defense: Najdorf Variation | |
| — | Diciunas | 0–1 | Jacunskas | Vilnius Open Chess Championship 2024 B | Sicilian Defense: Grand Prix Attack | |
| — | Ditmonas | 0–1 | Jacunskas | Vilnius Open Chess Championship 2024 B | Indian Defense: Tartakower Attack | |
