| 2 ene 2026 | Hagner, Bennet 2451 | Kalavannan, Koby 2251 | ½-½ | B32 Sicilian Defense: Nimzo-American Variation | Hastings International Chess Congress 2025: Masters | 30 | Ver |
| 1 ene 2026 | Ashton, Adam G 2247 | Kalavannan, Koby 2251 | ½-½ | B32 Sicilian Defense: Godiva Variation | Hastings International Chess Congress 2025: Masters | 15 | Ver |
| 31 dic 2025 | Kalavannan, Koby 2275 | Ortiz Sanchez, Luis 2007 | 1-0 | E04 Catalan Opening: Open Defense | Hastings International Chess Congress 2025: Masters | 46 | Ver |
| 30 dic 2025 | White, Stuart A 2072 | Kalavannan, Koby 2275 | 0-1 | A41 Rat Defense: English Rat | Hastings International Chess Congress 2025: Masters | 62 | Ver |
| 30 dic 2025 | Kalavannan, Koby 2275 | Hobson, Kenneth 2264 | 0-1 | A15 English Opening: Anglo-Indian Defense, King's Knight Variation | Hastings International Chess Congress 2025: Masters | 31 | Ver |
| 29 dic 2025 | Varney, Zoe 2053 | Kalavannan, Koby 2275 | 0-1 | B35 Sicilian Defense: Accelerated Dragon, Modern Bc4 Variation | Hastings International Chess Congress 2025: Masters | 31 | Ver |
| 29 dic 2025 | Kalavannan, Koby 2275 | Plat, Vojtech 2461 | 0-1 | B27 Sicilian Defense: Hyperaccelerated Dragon | Hastings International Chess Congress 2025: Masters | 43 | Ver |
| 28 dic 2025 | Rida, Ruqayyah 2068 | Kalavannan, Koby 2275 | 0-1 | B32 Sicilian Defense: Godiva Variation | Hastings International Chess Congress 2025: Masters | 34 | Ver |
| 7 dic 2025 | Kalavannan, Koby 2287 | McLachlan, Matthew 2011 | 1-0 | A05 Zukertort Opening: Nimzo-Larsen Variation | 2025 London Chess Classic | Super Rapidplay | 28 | Ver |
| 7 dic 2025 | Aghayev, Miragha 2424 | Kalavannan, Koby 2287 | 1-0 | A49 Indian Defense: Przepiorka Variation | 2025 London Chess Classic | Super Rapidplay | 39 | Ver |
| 7 dic 2025 | Kalavannan, Koby 2287 | Iniyan, Pa 2450 | ½-½ | A05 Zukertort Opening: Nimzo-Larsen Variation | 2025 London Chess Classic | Super Rapidplay | 80 | Ver |
| 7 dic 2025 | Han, Qixiang 2025 | Kalavannan, Koby 2287 | 0-1 | A46 Indian Defense: Wade-Tartakower Defense | 2025 London Chess Classic | Super Rapidplay | 80 | Ver |
| 6 dic 2025 | Dominguez Perez, Leinier 2703 | Kalavannan, Koby 2287 | 1-0 | B36 Sicilian Defense: Accelerated Dragon, Maróczy Bind, Gurgenidze Variation | 2025 London Chess Classic | Super Rapidplay | 45 | Ver |
| 3 dic 2025 | Rushbrooke, Remy 2119 | Kalavannan, Koby 2275 | 0-1 | A46 Indian Defense: Wade-Tartakower Defense | 2025 London Chess Classic | FIDE Open | 24 | Ver |
| 2 dic 2025 | Kalavannan, Koby 2275 | Kapechun, Mikhailo 2184 | 1-0 | A04 Zukertort Opening: Sicilian Invitation | 2025 London Chess Classic | FIDE Open | 41 | Ver |
| 1 dic 2025 | Hanache, Kai 2138 | Kalavannan, Koby 2275 | 1-0 | B30 Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | 2025 London Chess Classic | FIDE Open | 47 | Ver |
| 30 nov 2025 | Kalavannan, Koby 2275 | Magold, Filip 2465 | 0-1 | A29 English Opening: King's English Variation, Four Knights Variation, Fianchetto Line, with Nb6 | 2025 London Chess Classic | FIDE Open | 42 | Ver |
| 30 nov 2025 | Pollack, Oscar 2099 | Kalavannan, Koby 2275 | 0-1 | B01 Scandinavian Defense: Modern Variation | 2025 London Chess Classic | FIDE Open | 40 | Ver |
| 29 nov 2025 | Kalavannan, Koby 2275 | Deepak Ambattu, Rithvik 2168 | 1-0 | A06 Zukertort Opening | 2025 London Chess Classic | FIDE Open | 47 | Ver |
| 28 nov 2025 | Kalavannan, Koby 2275 | Vortmeier, Jan 2152 | 0-1 | E73 King's Indian Defense: Semi-Averbakh System | 2025 London Chess Classic | FIDE Open | 81 | Ver |