| Jun 21, 2026 | Kumar | ½–½ | Alvares | HSG Open 2026 A | Queen's Pawn Game: Symmetrical Variation | |
| Jun 21, 2026 | Kumar | 1–0 | Timmermans | HSG Open 2026 A | French Defense: Steinitz Variation, Boleslavsky Variation | |
| Jun 21, 2026 | Zhu | ½–½ | Kumar | HSG Open 2026 A | Sicilian Defense: Delayed Alapin Variation | |
| Jun 18, 2026 | Kumar | 0–1 | Warmerdam | HSG Open 2026 A | Sicilian Defense: Najdorf Variation | |
| Jul 30, 2025 | Kumar | 0–1 | Bus | Round 9: Kumar, Prajit Sai - Bus, Tom | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| Jul 29, 2025 | Dordevic | ½–½ | Kumar | Round 8: Dordevic, Tom - Kumar, Prajit Sai | Queen's Pawn Game: Colle System | |
| Jul 28, 2025 | Kumar | ½–½ | Ten Dam | Round 7: Kumar, Prajit Sai - Ten Dam, Bram | Caro-Kann Defense: Classical Variation, Main Line | |
| Jul 27, 2025 | Reuter | 1–0 | Kumar | Round 6: Reuter, Julian-Frank - Kumar, Prajit Sai | Catalan Opening: Open Defense, Classical Line | |
| Jul 26, 2025 | Kumar | 0–1 | Maatman | Round 5: Kumar, Prajit Sai - Maatman, Nick | French Defense: Steinitz Variation, Boleslavsky Variation | |
| Jul 25, 2025 | Den Heijer | 0–1 | Kumar | Round 4: Den Heijer, Rolinde - Kumar, Prajit Sai | Sicilian Defense: Richter-Rauzer Variation, Modern Variation | |
| Jul 24, 2025 | Kumar | 1–0 | Van den Berg | Round 3: Kumar, Prajit Sai - Van den Berg, Jeroen | Sicilian Defense: French Variation | |
| Jul 23, 2025 | Korneev | 1–0 | Kumar | Round 2: Korneev, Oleg - Kumar, Prajit Sai | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Jul 22, 2025 | Kumar | 1–0 | Aditya Kunal Patil | Round 1: Kumar, Prajit Sai - Aditya Kunal Patil | Sicilian Defense: Delayed Alapin Variation, with e6 | |
| Jun 6, 2025 | Kumar | 0–1 | Bok | Round 1: Kumar, Prajit Sai - Bok, Benjamin | Sicilian Defense: Najdorf Variation | |
| Jun 1, 2025 | De Winter | 1–0 | Kumar | Round 5: De Winter, Arthur - Kumar, Prajit Sai | Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation | |
| May 31, 2025 | Kumar | 0–1 | Van de Griendt | Round 4: Kumar, Prajit Sai - Van de Griendt, Jan Willem | French Defense: Advance Variation, Paulsen Attack | |
| May 30, 2025 | Kumar | 1–0 | Van den Doel | Round 3: Kumar, Prajit Sai - Van den Doel, Erik | Sicilian Defense: Scheveningen Variation, English Attack, with f3 | |
| Nov 3, 2024 | Kumar | 1–0 | Lahaye | Amsterdam Chess Open 2024 | Sicilian Defense: Najdorf Variation | |
| Nov 3, 2024 | Schippers | 1–0 | Kumar | Amsterdam Chess Open 2024 | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Nov 2, 2024 | Van den Doel | ½–½ | Kumar | Amsterdam Chess Open 2024 | Queen's Pawn Game: Colle System, Traditional Colle | |
| May 3, 2024 | Lopes | 0–1 | Kumar | Round 7: Lopes, Samuel - Kumar, Prajit Sai | Sicilian Defense: Old Sicilian | |
| May 2, 2024 | Kumar | 0–1 | Wink | Round 6: Kumar, Prajit Sai - Wink, Luka | Sicilian Defense: Dragon Variation, Yugoslav Attack, Early Deviations | |
| May 1, 2024 | Zhu | 1–0 | Kumar | Round 5: Zhu, Chenwu - Kumar, Prajit Sai | Caro-Kann Defense: Tartakower Variation | |
| Apr 30, 2024 | Kumar | 1–0 | Pranav Kshirsagar | Round 4: Kumar, Prajit Sai - Pranav Kshirsagar | Caro-Kann Defense: Two Knights Attack | |
| Apr 29, 2024 | Van Arendonk | 1–0 | Kumar | Round 3: Van Arendonk, Polle - Kumar, Prajit Sai | Sicilian Defense: Classical Variation | |
| Apr 28, 2024 | Kumar | 1–0 | Fallaux | Round 2: Kumar, Prajit Sai - Fallaux, Storm | Sicilian Defense: Najdorf Variation | |
| Apr 27, 2024 | Roolvink | 1–0 | Kumar | Round 1: Roolvink, William - Kumar, Prajit Sai | Sicilian Defense: Closed, Traditional | |
| Mar 31, 2024 | Van den Doel | 1–0 | Kumar | Round 6: Van den Doel, Erik - Kumar, Prajit Sai | Queen's Pawn Game: Colle System, Traditional Colle | |
| Mar 30, 2024 | Krylov | 0–1 | Kumar | Round 5: Krylov, Philippe - Kumar, Prajit Sai | Queen's Gambit Declined: Queen's Knight Variation | |
| Mar 30, 2024 | Kumar | 0–1 | Bekker | Round 3: Kumar, Prajit Sai - Bekker, Stefan | Nimzo-Indian Defense: Sämisch Variation | |
| Mar 30, 2024 | De Vries | ½–½ | Kumar | Round 1: De Vries, Leon - Kumar, Prajit Sai | King's Indian Attack | |
| Mar 29, 2024 | Kumar | 1–0 | Van der Lubben | Round 2: Kumar, Prajit Sai - Van der Lubben, Arno | Italian Game: Classical Variation, Giuoco Pianissimo, with a6 | |
| Aug 9, 2024 | Hng | 1–0 | Kumar | Round 8: Hng, Mei-En Emmanuelle - Kumar, Prajit Sai | Sicilian Defense: Smith-Morra Gambit Accepted, Pin Defense | |
| Aug 4, 2024 | Kumar | 0–1 | Ikonnikov | Round 3: Kumar, Prajit Sai - Ikonnikov, Vyacheslav | Sicilian Defense: Kalashnikov Variation | |
| Oct 27, 2023 | Schilstra | 1–0 | Kumar | Amsterdam Chess Open 2023 - A & B | Queen's Gambit Declined | |
| May 6, 2023 | Smeets | 1–0 | Kumar | NJSK 2023 Jeugd B | Sicilian Defense: Kalashnikov Variation | |
| May 5, 2023 | Kumar | 1–0 | Labruyere | NJSK 2023 Jeugd B | King's Indian Defense: Orthodox Variation, Gligoric-Taimanov System | |
| May 4, 2023 | Kumar | ½–½ | Bakija | NJSK 2023 Jeugd B | Queen's Pawn Game: Symmetrical Variation | |
| May 3, 2023 | Van Egmond | ½–½ | Kumar | NJSK 2023 Jeugd B | Queen's Gambit Declined: Queen's Knight Variation | |
| May 2, 2023 | Kumar | ½–½ | Van Foreest | NJSK 2023 Jeugd B | Queen's Pawn Game: Symmetrical Variation | |
| May 1, 2023 | Ponomarev | 0–1 | Kumar | NJSK 2023 Jeugd B | English Opening: Agincourt Defense | |
| Apr 30, 2023 | Kumar | 1–0 | Snijders | NJSK 2023 Jeugd B | Queen's Pawn Game: Symmetrical Variation | |
| — | Kumar | ½–½ | Miezis | Open Geraardsbergen 2025 | Sicilian Defense: French Variation | |
| — | Kumar | ½–½ | Dreelinck | Open Geraardsbergen 2025 | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| — | Van Den Berg | ½–½ | Kumar | Open Geraardsbergen 2025 | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| — | Orban | 0–1 | Kumar | Open Geraardsbergen 2025 | Nimzo-Larsen Attack: Classical Variation | |