| Feb 16, 2026 | Sivakumar | 0–1 | Fus | 17th Annual Southwest Class Tournament | English Defense | |
| Feb 14, 2026 | Sivakumar | 0–1 | Cardoso Cardoso | 17th Annual Southwest Class Tournament | Bogo-Indian Defense: Retreat Variation | |
| Feb 13, 2026 | Sivakumar | * | Widener | 17th Annual Southwest Class Tournament | ? | |
| Jan 4, 2026 | Sivakumar | ½–½ | Parkhov | Round 4: Sivakumar, Shaashwath - Parkhov, Yair | Bogo-Indian Defense: Retreat Variation | |
| Jun 29, 2025 | Qian | * | Sivakumar | 18th Annual Philadephia International | ? | |
| Jun 28, 2025 | Stearman | * | Sivakumar | 18th Annual Philadephia International | ? | |
| Feb 17, 2025 | Sivakumar | ½–½ | Liu | Round 8: Sivakumar, Shaashwath - Liu, Patrick | Bogo-Indian Defense: Retreat Variation | |
| Feb 17, 2025 | Jimenez Garcia | ½–½ | Sivakumar | Round 9: Jimenez Garcia, Emmanuel - Sivakumar, Shaashwath | King's Indian Attack: Keres Variation | |
| Feb 16, 2025 | Sivakumar | ½–½ | Martinez Romero | Round 7: Sivakumar, Shaashwath - Martinez Romero, Martin | King's Indian Defense: Fianchetto Variation, Panno Variation | |
| Feb 16, 2025 | Sivakumar | ½–½ | Sivakumar | Round 6: Sivakumar, Shaaketh - Sivakumar, Shaashwath | Queen's Pawn Game: Symmetrical Variation | |
| Feb 15, 2025 | Sivakumar | ½–½ | Deng | Round 5: Sivakumar, Shaashwath - Deng, Henry | Slav Defense: Quiet Variation, Schallopp Defense | |
| Feb 15, 2025 | Guo | ½–½ | Sivakumar | Round 4: Guo, Andrew - Sivakumar, Shaashwath | Slav Defense: Breyer Variation | |
| Feb 14, 2025 | Sivakumar | 1–0 | Paredes Lagos | Round 3: Sivakumar, Shaashwath - Paredes Lagos, Anthony Javier | Queen's Gambit Accepted: Normal Variation | |
| Feb 14, 2025 | Yan | 1–0 | Sivakumar | Round 2: Yan, Nathan - Sivakumar, Shaashwath | Sicilian Defense: Scheveningen Variation, English Attack, with f3 | |
| Feb 13, 2025 | Sivakumar | 0–1 | Perdomo | Round 1: Sivakumar, Shaashwath - Perdomo, Leandro | Italian Game: Giuoco Pianissimo, Normal | |
| Jan 3, 2025 | Sivakumar | 0–1 | Chumpitaz | Round 3: Sivakumar, Shaashwath - Chumpitaz, Ann | Benko Gambit Accepted: Fully Accepted Variation | |
| Jul 7, 2024 | Jiang | 0–1 | Sivakumar | Round 9: Jiang, Lucas - Sivakumar, Shaashwath | Sicilian Defense: Najdorf Variation | |
| Jul 7, 2024 | Sivakumar | 0–1 | Shivakumar | Round 8: Sivakumar, Shaashwath - Shivakumar, Shawnak | Catalan Opening: Open Defense | |
| Jul 7, 2024 | Jimenez Garcia | 1–0 | Sivakumar | Round 7: Jimenez Garcia, Emmanuel - Sivakumar, Shaashwath | King's Indian Attack | |
| Jul 7, 2024 | Sivakumar | 1–0 | Levine | Round 6: Sivakumar, Shaashwath - Levine, Joseph | Catalan Opening: Open Defense | |
| Jul 7, 2024 | Deng | ½–½ | Sivakumar | Round 5: Deng, Henry - Sivakumar, Shaashwath | Caro-Kann Defense: Tartakower Variation | |
| Jul 7, 2024 | Sivakumar | 0–1 | Martinez Romero | Round 4: Sivakumar, Shaashwath - Martinez Romero, Martin | Benko Gambit Accepted: Fully Accepted Variation | |
| Jul 7, 2024 | Gumularz | 1–0 | Sivakumar | Round 3: Gumularz, Szymon - Sivakumar, Shaashwath | Queen's Pawn Game: London System | |
| Jul 7, 2024 | Sivakumar | 1–0 | Arenas | Round 2: Sivakumar, Shaashwath - Arenas, David | Queen's Gambit Accepted: Classical Defense, Steinitz Variation, Development Variation | |
| Jul 7, 2024 | Grigoryan | ½–½ | Sivakumar | Round 1: Grigoryan, Karen H. - Sivakumar, Shaashwath | English Opening: Caro-Kann Defensive System | |
| Jul 4, 2024 | Sivakumar | 1–0 | Lu | Round 2: Sivakumar, Shaashwath - Lu, Maximillian | Catalan Opening: Open Defense | |
| Jul 2, 2024 | Sripada | ½–½ | Sivakumar | Round 9: Sripada, Havish - Sivakumar, Shaashwath | Sicilian Defense: Najdorf Variation | |
| Jul 2, 2024 | Sivakumar | 0–1 | Grigoryan | Round 8: Sivakumar, Shaashwath - Grigoryan, Karen H. | Queen's Pawn Game: Modern Defense | |
| Jul 2, 2024 | Martinez Romero | ½–½ | Sivakumar | Round 7: Martinez Romero, Martin - Sivakumar, Shaashwath | Sicilian Defense: Najdorf Variation, Lipnitsky Attack | |
| Jul 2, 2024 | Sivakumar | ½–½ | Gumularz | Round 6: Sivakumar, Shaashwath - Gumularz, Szymon | Indian Defense: King's Indian Variation, Fianchetto Variation | |
| Jul 2, 2024 | Sivakumar | ½–½ | Sivakumar | Round 5: Sivakumar, Shaaketh - Sivakumar, Shaashwath | Ruy Lopez: Open Berlin Defense, l'Hermet Variation | |
| Jul 2, 2024 | Sivakumar | 0–1 | Arenas | Round 4: Sivakumar, Shaashwath - Arenas, David | Catalan Opening: Open Defense | |
| Jul 2, 2024 | Levine | 1–0 | Sivakumar | Round 3: Levine, Joseph - Sivakumar, Shaashwath | Caro-Kann Defense: Endgame Variation | |
| Jul 2, 2024 | Shivakumar | 0–1 | Sivakumar | Round 1: Shivakumar, Shawnak - Sivakumar, Shaashwath | English Opening: King's English Variation, Adhiban Gambit | |
| May 26, 2024 | Talwalkar | 1–0 | Sivakumar | Round 7: Talwalkar, Vedant - Sivakumar, Shaashwath | Sicilian Defense: Najdorf Variation | |
| May 26, 2024 | Sivakumar | 0–1 | Atanasov | Round 6: Sivakumar, Shaashwath - Atanasov, Anthony | Bogo-Indian Defense: Retreat Variation | |
| May 25, 2024 | Strikovic | ½–½ | Sivakumar | Round 5: Strikovic, Aleksa - Sivakumar, Shaashwath | Caro-Kann Defense: Accelerated Panov Attack | |
| May 25, 2024 | Sivakumar | 1–0 | Widjaja | Round 4: Sivakumar, Shaashwath - Widjaja, Luke | Catalan Opening: Open Defense, Classical Line | |
| May 24, 2024 | Heimann | 1–0 | Sivakumar | Round 3: Heimann, Mark - Sivakumar, Shaashwath | Sicilian Defense: Najdorf Variation, Adams Attack | |
| May 24, 2024 | Sivakumar | ½–½ | Haldorsen | Round 2: Sivakumar, Shaashwath - Haldorsen, Benjamin | Benoni Defense: Fianchetto Variation, Hastings Defense | |
| May 24, 2024 | Ganesan | 0–1 | Sivakumar | Round 1: Ganesan, Vikrant - Sivakumar, Shaashwath | Slav Defense: Czech Variation, Carlsbad Variation, Morozevich Variation | |
| Apr 1, 2024 | Garcia Guerrero | * | Sivakumar | Round 5: Garcia Guerrero, Isaac Antonio - Sivakumar, Shaashwath | Queen's Pawn Game: Symmetrical Variation | |
| Mar 31, 2024 | Zuluaga Mancilla | 0–1 | Sivakumar | Round 4: Zuluaga Mancilla, Cesar - Sivakumar, Shaashwath | Queen's Pawn Game: Symmetrical Variation | |
| Mar 31, 2024 | Sivakumar | 1–0 | Jimenez Garcia | Round 3: Sivakumar, Shaashwath - Jimenez Garcia, Emmanuel | Benoni Defense: Fianchetto Variation | |
| Mar 30, 2024 | Alarcon Bahamondez | 1–0 | Sivakumar | Round 2: Alarcon Bahamondez, Roberto Ignacio - Sivakumar, Shaashwath | Nimzo-Larsen Attack: Classical Variation | |
| Mar 30, 2024 | Sivakumar | ½–½ | Arenas | Round 1: Sivakumar, Shaashwath - Arenas, David | Catalan Opening | |
| Sep 2, 2024 | Sivakumar | 0–1 | Atwell | Round 6: Sivakumar, Shaashwath - Atwell, Rose | Slav Defense: Quiet Variation, Schallopp Defense | |
| Sep 2, 2024 | Chinni | ½–½ | Sivakumar | Round 7: Chinni, Rishabh - Sivakumar, Shaashwath | Sicilian Defense: Najdorf Variation | |
| Sep 1, 2024 | Sivakumar | 1–0 | Gongora Montes | Round 4: Sivakumar, Shaashwath - Gongora Montes, Benjamin | Catalan Opening: Open Defense | |
| Sep 1, 2024 | Wu | ½–½ | Sivakumar | Round 5: Wu, Derek - Sivakumar, Shaashwath | Slav Defense: Modern Line | |
| Aug 31, 2024 | Sivakumar | ½–½ | Yan | Round 2: Sivakumar, Shaashwath - Yan, Nathan | Catalan Opening: Open Defense, Classical Line | |
| Aug 31, 2024 | Alfaro | 0–1 | Sivakumar | Round 3: Alfaro, William - Sivakumar, Shaashwath | Slav Defense: Czech Variation, Krause Attack | |
| Aug 30, 2024 | Karthi | 1–0 | Sivakumar | Round 1: Karthi, Jashith - Sivakumar, Shaashwath | Slav Defense: Geller Gambit | |
| May 20, 2022 | Sevillano | 1–0 | Sivakumar | Mission 360 / Bay Area Chess IM Norm Tournament #4 | Indian Defense: Knights Variation | |
| May 19, 2022 | Sivakumar | ½–½ | Andrianov | Mission 360 / Bay Area Chess IM Norm Tournament #4 | Neo-Grünfeld Defense: Classical Variation, Original Defense | |
| May 18, 2022 | Sivakumar | ½–½ | Sivakumar | Mission 360 / Bay Area Chess IM Norm Tournament #4 | Grob Opening | |
| May 17, 2022 | Sivakumar | 0–1 | Vazquez | Mission 360 / Bay Area Chess IM Norm Tournament #4 | Catalan Opening: Open Defense | |
| May 16, 2022 | Kretchetov | ½–½ | Sivakumar | Mission 360 / Bay Area Chess IM Norm Tournament #4 | Trompowsky Attack | |
| May 15, 2022 | Sivakumar | ½–½ | Zaloznyy | Mission 360 / Bay Area Chess IM Norm Tournament #4 | Queen's Indian Accelerated | |
| May 15, 2022 | Sivakumar | ½–½ | Li | Mission 360 / Bay Area Chess IM Norm Tournament #4 | Dutch Defense: Classical Variation | |
| May 14, 2022 | Sivakumar | 1–0 | Yanayt | Mission 360 / Bay Area Chess IM Norm Tournament #4 | King's Indian Defense: Makogonov Variation | |
| — | Yu | 1–0 | Sivakumar | Mission 360 / Bay Area Chess IM Norm Tournament #4 | Sicilian Defense: Moscow Variation, Main Line | |