| — | Scholz | 1–0 | Sivakumar | Grenke Open | Slav Defense | |
| Jun 20, 2026 | Babazada | 0–1 | Sivakumar | Round 11: Babazada, Khazar - Sivakumar, Ashvin | Italian Game: Scotch Gambit, Max Lange Attack | |
| Jun 20, 2026 | Sivakumar | 0–1 | Ansat | Round 10: Sivakumar, Ashvin - Ansat, Aldiyar | Queen's Gambit Declined: Vienna Variation, Quiet Variation | |
| Jun 20, 2026 | Sadhwani | 1–0 | Sivakumar | Round 9: Sadhwani, Raunak - Sivakumar, Ashvin | English Opening: Symmetrical Variation, Ultra-Symmetrical Variation | |
| Jun 20, 2026 | Sivakumar | 1–0 | Zhu | Round 8: Sivakumar, Ashvin - Zhu, Chen | Slav Defense | |
| Jun 20, 2026 | Xiao | 0–1 | Sivakumar | Round 7: Xiao, Junyuan - Sivakumar, Ashvin | Bogo-Indian Defense: Nimzowitsch Variation | |
| Jun 20, 2026 | Li | 0–1 | Sivakumar | Round 6: Li,Xinyu - Sivakumar, Ashvin | Bogo-Indian Defense: Exchange Variation | |
| Jun 20, 2026 | Sivakumar | 0–1 | Liang | Round 5: Sivakumar, Ashvin - Liang, Awonder | English Defense | |
| Jun 20, 2026 | Huang | 1–0 | Sivakumar | Round 3: Huang, Renjie - Sivakumar, Ashvin | Ruy Lopez: Closed | |
| Jun 20, 2026 | Perez Epinin | 1–0 | Sivakumar | Round 2: Perez Epinin, Gines - Sivakumar, Ashvin | Old Indian Defense | |
| Jun 20, 2026 | Itgelt | 1–0 | Sivakumar | Round 1: Itgelt, Khuyagtsogt - Sivakumar, Ashvin | King's Indian Defense: Fianchetto Variation, Yugoslav System | |
| Jun 19, 2026 | Sivakumar | ½–½ | Hong | Round 12: Sivakumar, Ashvin - Hong, Xing | Torre Attack: Fianchetto Defense | |
| Jun 19, 2026 | Sivakumar | 0–1 | Munguntuul | Round 11: Sivakumar, Ashvin - Munguntuul, Batkhuyag | Slav Defense | |
| Jun 19, 2026 | Mas | 0–1 | Sivakumar | Round 10: Mas, Hafizulhelmi - Sivakumar, Ashvin | Bishop's Opening: Vienna Hybrid, Hromádka Variation | |
| Jun 19, 2026 | Sivakumar | 1–0 | Dyget | Round 9: Sivakumar, Ashvin - Dyget, Ethan Chou | Queen's Gambit Declined: Exchange Variation, Reshevsky Variation | |
| Jun 18, 2026 | Sivakumar | 1–0 | Prach | Round 7: Sivakumar, Ashvin - Prach, Oleksandr | Robatsch Defense | |
| Jun 18, 2026 | Sivakumar | 0–1 | Camacho Collados | Round 6: Sivakumar, Ashvin - Camacho Collados, Marcos | Queen's Indian Defense: Fianchetto Variation | |
| Jun 18, 2026 | Sivakumar | ½–½ | Li | Round 5: Sivakumar, Ashvin - Li, Xueyi | Queen's Gambit Accepted: Old Variation | |
| Jun 17, 2026 | Sivakumar | 1–0 | Li | Round 4: Sivakumar, Ashvin - Li, Wenxiang | Nimzo-Indian Defense: Normal Variation, Ragozin Variation | |
| Jun 17, 2026 | Castrillon Gomez | 0–1 | Sivakumar | Round 3: Castrillon Gomez, Melissa - Sivakumar, Ashvin | Slav Defense: Quiet Variation, Schallopp Defense | |
| Jun 17, 2026 | Zhou | 0–1 | Sivakumar | Round 2: Zhou, Yuxu - Sivakumar, Ashvin | Ruy Lopez: Closed, Chigorin Defense | |
| Jun 17, 2026 | Rakhmatullaev | 1–0 | Sivakumar | Round 1: Rakhmatullaev, Akjol - Sivakumar, Ashvin | Ruy Lopez: Closed, Martinez Variation | |
| May 16, 2026 | Ritabrata Chakraborty | 1–0 | Sivakumar | rated rapid game | Four Knights Game: Scotch Variation Accepted | |
| May 16, 2026 | Sivakumar | 0–1 | Ritabrata Chakraborty | rated rapid game | Queen's Gambit Declined: Chigorin Defense, Main Line | |
| May 2, 2026 | Abdulrahman | 0–1 | Sivakumar | rated rapid game | Bishop's Opening: Ponziani Gambit | |
| May 2, 2026 | Sivakumar | 0–1 | Cardoso Cardoso | rated rapid game | Queen's Gambit Declined: Three Knights Variation | |
| May 2, 2026 | Dosmukhambetov | ½–½ | Sivakumar | rated rapid game | Queen's Pawn Game: London System | |
| May 2, 2026 | Sivakumar | 1–0 | Hamouri | rated rapid game | King's Indian Defense: Orthodox Variation, Positional Defense | |
| May 2, 2026 | Mudzamba | 0–1 | Sivakumar | rated rapid game | Italian Game: Two Knights Defense, Polerio Defense, Bishop Check Line | |
| May 2, 2026 | Sivakumar | 1–0 | Henriquez Hidalgo | rated rapid game | King's Indian Defense: Orthodox Variation | |
| May 2, 2026 | OGBONNA | 1–0 | Sivakumar | rated rapid game | Vienna Gambit, with Max Lange Defense | |
| Jun 14, 2025 | Sivakumar | 0–1 | Villiers | 2025 FIDE World Blitz Team Championship Pool B | Queen's Gambit Declined: Lasker Defense | |
| Jun 14, 2025 | Jumabayev | 1–0 | Sivakumar | 2025 FIDE World Blitz Team Championship Pool B | Italian Game: Classical Variation, Giuoco Pianissimo, with h6 | |
| Jun 14, 2025 | Sivakumar | ½–½ | Steinberg | 2025 FIDE World Blitz Team Championship Pool B | Semi-Slav Defense: Quiet Variation | |
| Jun 14, 2025 | Vitiugov | ½–½ | Sivakumar | 2025 FIDE World Blitz Team Championship Pool B | Ruy Lopez: Morphy Defense, Tarrasch Variation | |
| Jun 14, 2025 | Sivakumar | 1–0 | Dishman | 2025 FIDE World Blitz Team Championship Pool B | Slav Defense: Quiet Variation, Schallopp Defense | |
| Jun 11, 2025 | Sivakumar | 1–0 | Zlotnik | 2025 FIDE World Rapid Team Championschip matches 11-18 | Bogo-Indian Defense: Grünfeld Variation | |
| Jun 11, 2025 | Parker | ½–½ | Sivakumar | 2025 FIDE World Rapid Team Championship matches 19-26 | Queen's Gambit Declined | |
| Jun 11, 2025 | Sivakumar | 0–1 | Wanyama | 2025 FIDE World Rapid Team Championship matches 19-26 | Torre Attack: Fianchetto Defense | |
| Jun 11, 2025 | Sivakumar | 0–1 | Short | 2025 FIDE World Rapid Team Championschip matches 11-18 | Marienbad System | |
| Feb 23, 2025 | Sivakumar | 1–0 | Nyberg | British Universities Chess Association Championship 2025 | Grünfeld Defense: Flohr Variation | |
| Feb 23, 2025 | Sim | 0–1 | Sivakumar | British Universities Chess Association Championship 2025 | Four Knights Game: Gunsberg Variation | |
| Feb 22, 2025 | Sivakumar | 0–1 | Petr | British Universities Chess Association Championship 2025 | Queen's Gambit Declined: Albin Countergambit, Normal Line | |
| Feb 22, 2025 | Sivakumar | * | Muhunthan | British Universities Chess Association Championship 2025 | King's Indian Defense: Orthodox Variation, Bayonet Attack, Sokolov's Line | |
| Feb 22, 2025 | Sivakumar | 1–0 | Austin | British Universities Chess Association Blitz 2025 | Indian Defense: Normal Variation | |
| Feb 22, 2025 | Sivakumar | 1–0 | Hedger | British Universities Chess Association Blitz 2025 | Semi-Slav Defense: Accelerated Move Order | |
| Feb 22, 2025 | Sivakumar | 1–0 | Balaji | British Universities Chess Association Blitz 2025 | Indian Defense: Wade-Tartakower Defense | |
| Feb 22, 2025 | Sivakumar | 0–1 | Schweizer | British Universities Chess Association Blitz 2025 | Bogo-Indian Defense: Grünfeld Variation | |
| Feb 22, 2025 | Obiamiwe | 0–1 | Sivakumar | British Universities Chess Association Championship 2025 | Ruy Lopez: Morphy Defense, Jaffe Gambit | |
| Feb 22, 2025 | Kirupakaran | 0–1 | Sivakumar | British Universities Chess Association Championship 2025 | Vienna Game: Vienna Gambit, Paulsen Attack | |
| Feb 22, 2025 | Minko | 0–1 | Sivakumar | British Universities Chess Association Championship 2025 | Scotch Game: Schmidt Variation | |
| Feb 22, 2025 | Goh | 1–0 | Sivakumar | British Universities Chess Association Blitz 2025 | Catalan Opening | |
| Feb 22, 2025 | Li | ½–½ | Sivakumar | British Universities Chess Association Blitz 2025 | Queen's Indian Defense: Kasparov-Petrosian Variation, Main Line | |
| Mar 31, 2024 | Bettalli | 1–0 | Sivakumar | Grenke Open | Slav Defense: Czech Variation, Dutch Variation | |
| Mar 2, 2024 | Sivakumar | 1–0 | Petr | Round 142: Sivakumar, Ashvin - Petr, Jan | Queen's Gambit Accepted: Furman Variation | |
| Apr 2, 2023 | Thorfinnsson | 1–0 | Sivakumar | Reykjavik Open 2023 | Torre Attack: Fianchetto Defense | |
| Mar 31, 2023 | Sivakumar | * | Carey | Reykjavik Open | ? | |
| Mar 29, 2023 | Papp | 1–0 | Sivakumar | Reykjavik Open 2023 | Ruy Lopez: Closed, Martinez Variation | |
| Nov 3, 2021 | Sivakumar | 1–0 | Kooh Peima | Asian Club Hybrid Chess Championships 2021 - Default | Torre Attack: Fianchetto Defense | |
| Nov 3, 2021 | Dadpour | 0–1 | Sivakumar | Asian Club Hybrid Chess Championships 2021 - Default | East Indian Defense | |
| Nov 3, 2021 | Randil | 0–1 | Sivakumar | Asian Club Hybrid Chess Championships 2021 - Default | Indian Defense: Wade-Tartakower Defense | |
| Nov 3, 2021 | Bahadori | 0–1 | Sivakumar | Asian Club Hybrid Chess Championships 2021 - Default | Indian Defense: Wade-Tartakower Defense | |
| — | Sivakumar | 1–0 | Saunders | British Universities Chess Association Blitz 2025 | Slav Defense | |
| — | Sivakumar | 1–0 | Whittington | British Universities Chess Association Championship 2025 | Queen's Gambit Declined | |
| — | Kusa | ½–½ | Sivakumar | Reykjavik Open 2023 | King's Indian Defense: Orthodox Variation, Positional Defense | |
| — | Mahajan | 0–1 | Sivakumar | British Universities Chess Association Blitz 2025 | Nimzo-Indian Defense: Classical Variation, Berlin Variation | |
| — | Lee | 0–1 | Sivakumar | British Universities Chess Association Blitz 2025 | King's Indian Defense: Fianchetto Variation, Yugoslav Variation, Advance Line | |
| — | Asadli | 0–1 | Sivakumar | British Universities Chess Association Championship 2025 | Ruy Lopez: Closed | |