| Jan 2, 2025 | Kwong | 0–1 | Kojima | Hong Kong International Open 2024 | Slav Defense: Quiet Variation, Schallopp Defense | |
| Jan 1, 2025 | Kojima | ½–½ | Shen | Hong Kong International Open 2024 | Slav Defense | |
| Sep 22, 2024 | Kojima | 1–0 | Valderrama Quiceno | 45th FIDE Chess Olympiad | Queen's Gambit Declined: Harrwitz Attack | |
| Sep 21, 2024 | Gretarsson | 0–1 | Kojima | 45th FIDE Chess Olympiad | English Opening: Caro-Kann Defensive System | |
| Sep 20, 2024 | Rakan Dasa | 0–1 | Kojima | 45th FIDE Chess Olympiad | Caro-Kann Defense: Classical Variation | |
| Sep 19, 2024 | Kojima | 0–1 | Kostolansky | 45th FIDE Chess Olympiad | Queen's Gambit Declined: Exchange Variation, Sämisch Variation | |
| Sep 16, 2024 | Kojima | 0–1 | Berdayes Ason | 45th FIDE Chess Olympiad | Queen's Gambit Declined: Ragozin Defense | |
| Sep 15, 2024 | Aragon Trujillo | 0–1 | Kojima | 45th FIDE Chess Olympiad | Caro-Kann Defense: Two Knights Attack | |
| Sep 14, 2024 | Kojima | 0–1 | Antal | 45th FIDE Chess Olympiad | King's Indian Defense: Normal Variation, King's Knight Variation | |
| Sep 12, 2024 | Lavrencic | 1–0 | Kojima | 45th FIDE Chess Olympiad | Caro-Kann Defense: Advance Variation, Short Variation | |
| Sep 11, 2024 | Kojima | 1–0 | Hassuji | 45th FIDE Chess Olympiad | Semi-Slav Defense: Chigorin Defense | |
| May 6, 2024 | Yonemitsu | 0–1 | Kojima | Round 9: Yonemitsu, Kohei - Kojima, Shinya | Caro-Kann Defense: Advance Variation | |
| May 5, 2024 | Kojima | ½–½ | Nanjo | Round 8: Kojima, Shinya - Nanjo, Ryosuke | Queen's Gambit Declined: Ragozin Defense | |
| May 5, 2024 | Kojima | ½–½ | Tran | Round 7: Kojima, Shinya - Tran, Thanh Tu | Queen's Gambit Declined: Harrwitz Attack | |
| May 4, 2024 | Maeshima | 0–1 | Kojima | Round 6: Maeshima, Hiroaki - Kojima, Shinya | Slav Defense: Czech Variation, Krause Attack | |
| May 2, 2024 | Kojima | * | Chen | Round 1: Kojima, Shinya - Chen, Muxi | Semi-Slav Defense: Stoltz Variation | |
| Mar 3, 2024 | Kojima | 0–1 | Bhatia | Round 6: ? | King's Indian Attack: Symmetrical Defense | |
| Mar 3, 2024 | Chen | * | Kojima | Round 5: ? | Scandinavian Defense: Panov Transfer | |
| Mar 3, 2024 | Higashino | 0–1 | Kojima | Round 4: Higashino, Tetsuo - Kojima, Shinya | King's Indian Attack: Double Fianchetto | |
| Mar 2, 2024 | Yonemitsu | ½–½ | Kojima | Round 2: Yonemitsu, Kohei - Kojima, Shinya | Caro-Kann Defense: Exchange Variation | |
| Mar 2, 2024 | Kojima | 1–0 | Uetani | Round 1: Kojima, Shinya - Uetani, Toshiaki | King's Indian Attack: Symmetrical Defense | |
| Dec 31, 2024 | Priasmoro | 1–0 | Kojima | Hong Kong International Open 2024 | Caro-Kann Defense: Advance Variation, Short Variation | |
| Dec 30, 2024 | Kojima | ½–½ | Jiang | Hong Kong International Open 2024 | Slav Defense | |
| Dec 30, 2024 | Lam | 0–1 | Kojima | Hong Kong International Open 2024 | Caro-Kann Defense: Advance Variation, Short Variation | |
| Dec 29, 2024 | Kojima | 1–0 | Nissinen | Hong Kong International Open 2024 | Queen's Gambit Declined: Three Knights, Vienna Variation | |
| Dec 28, 2024 | Kojima | ½–½ | Sethuraman | Hong Kong International Open 2024 | Indian Defense: Anti-Nimzo-Indian | |
| Dec 28, 2024 | Bernadskiy | 1–0 | Kojima | Hong Kong International Open 2024 | Caro-Kann Defense: Exchange Variation | |
| Dec 27, 2024 | Wong | 0–1 | Kojima | Hong Kong International Open 2024 | Slav Defense: Exchange Variation, Boor Attack | |
| Aug 5, 2023 | Pribelszky | ½–½ | Kojima | Sixdays GM-B | Caro-Kann Defense: Breyer Variation | |
| Aug 4, 2023 | Kojima | 1–0 | Fromm | Sixdays GM-B | English Opening: Symmetrical Variation, Three Knights, Fianchetto Variation | |
| Aug 4, 2023 | Horvath | 0–1 | Kojima | Sixdays GM-B | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| Aug 3, 2023 | Kojima | ½–½ | Liu | Sixdays GM-B | English Opening: Anglo-Indian Defense, Old Indian Formation | |
| Aug 2, 2023 | Kojima | 0–1 | Mirzoev | Sixdays GM-B | Slav Defense: Czech Variation, Wiesbaden Variation | |
| Aug 2, 2023 | Plat | 1–0 | Kojima | Sixdays GM-B | Caro-Kann Defense: Endgame Offer | |
| Aug 1, 2023 | Kojima | 1–0 | Levine | Sixdays GM-B | Queen's Gambit Declined: Vienna Variation, Quiet Variation | |
| Aug 1, 2023 | Chandran | ½–½ | Kojima | Sixdays GM-B | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| Jul 31, 2023 | Kojima | ½–½ | Ngo | Sixdays GM-B | Queen's Gambit Declined: Harrwitz Attack | |
| Dec 23, 2021 | Nagy | ½–½ | Kojima | Vezerkepzo GM December | Semi-Slav Defense: Normal Variation | |
| Dec 22, 2021 | Kojima | * | Mirzoev | Vezerkepzo GM December | Queen's Gambit Declined: Harrwitz Attack, Two Knights Defense | |
| Dec 21, 2021 | Pasti | * | Kojima | Vezerkepzo GM December | Ruy Lopez: Fianchetto Defense | |
| Dec 20, 2021 | Kojima | * | Varga | Vezerkepzo GM December | Queen's Gambit Accepted: Old Variation | |
| Dec 19, 2021 | Aditya Vikram Paul | 1–0 | Kojima | Vezerkepzo GM December | Catalan Opening | |
| Dec 18, 2021 | Kojima | ½–½ | Avinash | Vezerkepzo GM December 2021 | Indian Defense: Przepiorka Variation | |
| Dec 17, 2021 | Ajay Krishna | * | Kojima | Vezerkepzo GM December | Catalan Opening: Closed | |
| Dec 16, 2021 | Kojima | 0–1 | Girinath | Vezerkepzo GM December | Dutch Defense: Stonewall Variation, Modern Variation | |
| Dec 15, 2021 | Kojima | ½–½ | Nitish Belurkar | Vezerkepzo GM December | Queen's Gambit Declined: Three Knights, Vienna Variation | |
