| 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 | |
| Nov 4, 2023 | Kojima Shinya | 0–1 | Noguchi Koji | Round 4: Kojima Shinya - Noguchi Koji | English Opening: Great Snake Variation | |
| Nov 3, 2023 | Tanaka Satoshi | 0–1 | Kojima Shinya | Round 3: Tanaka Satoshi - Kojima Shinya | Caro-Kann Defense: Exchange Variation | |
| Nov 3, 2023 | Kojima Shinya | * | Okabe Yuma | Round 2: Kojima Shinya - Okabe Yuma | King's Indian Defense: Fianchetto Variation, Yugoslav System | |
| Nov 2, 2023 | Kato Ami | 0–1 | Kojima Shinya | Round 1: Kato Ami - Kojima Shinya | Queen's Pawn Game: Accelerated London System, Steinitz Countergambit | |
| Sep 17, 2023 | Kojima Shinya | * | Kuribayashi Nagahisa | Round 1: Kojima Shinya - Kuribayashi Nagahisa | King's Indian Defense: Normal Variation, King's Knight Variation | |
| Jul 17, 2023 | Kojima Shinya | * | Aoshima Mirai | Round 7: Kojima Shinya - Aoshima Mirai | Queen's Gambit Declined: Barmen Variation | |
| Jul 16, 2023 | Kojima Shinya | 0–1 | Bibby Simon | Round 5: Kojima Shinya - Bibby Simon | Nimzo-Indian Defense: Normal Variation, Ragozin Variation | |
| Jul 16, 2023 | Tran Thanh Tu | 0–1 | Kojima Shinya | Round 4: Tran Thanh Tu - Kojima Shinya | Nimzo-Larsen Attack: Classical Variation | |
| Aug 8, 2022 | Kojima Shinya | 1–0 | Al-Sulaiti Ghanem | WCO | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | |
| Aug 7, 2022 | Al Hosani Omran | ½–½ | Kojima Shinya | WCO | Ruy Lopez: Morphy Defense, Anderssen Variation | |
| Aug 6, 2022 | Kojima Shinya | 0–1 | Gundavaa Bayarsaikhan | WCO | Sicilian Defense: Moscow Variation | |
| Aug 5, 2022 | Thing Bibek | 1–0 | Kojima Shinya | WCO | Italian Game: Classical Variation, Giuoco Pianissimo, with d6 | |
| Aug 3, 2022 | Kojima Shinya | 0–1 | Diaz Hollemaert Nahuel | WCO | Modern Defense | |
| Aug 1, 2022 | Kojima Shinya | ½–½ | Delgado Ramirez Neuris | WCO | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Jul 31, 2022 | Alharthi Ahmed Mohammed A | 0–1 | Kojima Shinya | WCO | Queen's Pawn Game: Accelerated London System | |
| Jul 30, 2022 | Kojima Shinya | ½–½ | Stremavicius Titas | WCO | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Apr 1, 2022 | Kojima Shinya | ½–½ | Avinash Ramesh | Vezerkepzo GM Christmas | Grünfeld Defense: Three Knights Variation, Petrosian System | |
| Mar 1, 2022 | Nagy Gabor | 1–0 | Kojima Shinya | Vezerkepzo GM Christmas | Slav Defense: Quiet Variation, Pin Defense | |
| Feb 1, 2022 | Kojima Shinya | 1–0 | Sahithi Varshini M | Vezerkepzo GM Christmas | Nimzo-Indian Defense | |
| Dec 31, 2021 | Mihok Oliver | ½–½ | Kojima Shinya | Vezerkepzo GM Christmas | Ruy Lopez: Fianchetto Defense | |
| Dec 30, 2021 | Kojima Shinya | ½–½ | Trost Edvin | Vezerkepzo GM Christmas | Slav Defense | |
| Dec 29, 2021 | Pechac Jergus | * | Kojima Shinya | Vezerkepzo GM Christmas | Queen's Gambit Declined: Cambridge Springs Defense | |
| Dec 28, 2021 | Kojima Shinya | ½–½ | Ajay Krishna S | Vezerkepzo GM Christmas | Queen's Gambit Declined: Ragozin Defense | |
| Dec 27, 2021 | Leszko Bence | ½–½ | Kojima Shinya | Vezerkepzo GM Christmas | Vienna Game: Vienna Gambit, Paulsen Attack | |
| Dec 26, 2021 | Kojima Shinya | 0–1 | Aditya Vikram Paul | Vezerkepzo GM Christmas | Bogo-Indian Defense: Vitolins Variation | |
| — | Kojima Shinya | 1–0 | Abdallah Houssein Ali | WCO | Petrov's Defense: Modern Attack, Center Variation | |