| Jan 4, 2026 | Karthikeyan | 0–1 | Abdurakhmonov | Round 4: Karthikeyan, Harishkumar - Abdurakhmonov, Mukhammadali | Caro-Kann Defense: Classical Variation, Main Line | |
| Jan 4, 2026 | Paul Iinuma | ½–½ | Karthikeyan | Round 3: Paul Iinuma - Karthikeyan, Harishkumar | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Jan 3, 2026 | Vidyarthi | 0–1 | Karthikeyan | Round 2: Vidyarthi, Omya - Karthikeyan, Harishkumar | Queen's Pawn Game: Symmetrical Variation, Pseudo-Catalan | |
| Jan 3, 2026 | Karthikeyan | ½–½ | Petrov | Round 1: Karthikeyan, Harishkumar - Petrov, Vladimir | Sicilian Defense: Najdorf Variation | |
| Dec 30, 2025 | Shafer | 1–0 | Karthikeyan | 35th annual North American Open | English Opening: Agincourt Defense, Neo-Catalan Declined | |
| Jul 7, 2024 | Gongora Montes | 1–0 | Karthikeyan | Round 5: Gongora Montes, Benjamin - Karthikeyan, Harishkumar | Queen's Pawn Game: Torre Attack | |
| Jul 6, 2024 | Varela Velazquez | 1–0 | Karthikeyan | Round 3: Varela Velazquez, Carlos Francisco - Karthikeyan, Harishkumar | Sicilian Defense: Dragon Variation, Yugoslav Attack, Panov Variation | |
| Jul 5, 2024 | Karthikeyan | 0–1 | Rivera | Round 2: Karthikeyan, Harishkumar - Rivera, Ingris | Sicilian Defense: Najdorf Variation | |
| Jul 5, 2024 | Karthikeyan | 0–1 | Zuluaga Mancilla | Round 1: Karthikeyan, Harishkumar - Zuluaga Mancilla, Cesar | Sicilian Defense: O'Kelly Variation, Maróczy Bind, Robatsch Line | |
| Jul 4, 2024 | Karthikeyan | 0–1 | Ramirez | Round 4: Karthikeyan, Harishkumar - Ramirez, Carlos | French Defense: Advance Variation, Euwe Variation | |
| May 12, 2024 | Karthikeyan | 0–1 | Hernandez Luna | Round 5: Karthikeyan, Harishkumar - Hernandez Luna, Jose Angel | Ruy Lopez: Exchange Variation, Alapin Gambit | |
| May 12, 2024 | Garduno Huerta | 0–1 | Karthikeyan | Round 4: Garduno Huerta, Joshua Emiliano - Karthikeyan, Harishkumar | Queen's Gambit Declined: Modern Variation, Normal Line | |
| May 12, 2024 | Karthikeyan | 0–1 | Gonzalez Zharikov | Round 3: Karthikeyan, Harishkumar - Gonzalez Zharikov, Andrey | Caro-Kann Defense: Karpov Variation | |
| May 11, 2024 | Solis Castro | ½–½ | Karthikeyan | Round 2: Solis Castro, Angel Alejan - Karthikeyan, Harishkumar | Nimzo-Larsen Attack: Classical Variation | |
| May 11, 2024 | Monroy G. | ½–½ | Karthikeyan | Round 1: Monroy G., Nataly A. - Karthikeyan, Harishkumar | Bogo-Indian Defense: Retreat Variation | |
