| 28 abr 2026 | Einarsson, Halldor Gretar 2173 | Kostenko, Petr 2338 | 0-1 | E00 Catalan Opening | FIDE World Senior Team Championships 2026 - Senior 50+ | 37 | Ver |
| 27 abr 2026 | Kostenko, Petr 2338 | Jacimovic, Dragoljub 2359 | 1-0 | C10 French Defense: Rubinstein Variation, Fort Knox Variation | FIDE World Senior Team Championships 2026 - Senior 50+ | 41 | Ver |
| 26 abr 2026 | Kaidanov, Gregory 2491 | Kostenko, Petr 2338 | ½-½ | A87 Dutch Defense: Leningrad Variation | FIDE World Senior Team Championships 2026 - Senior 50+ | 19 | Ver |
| 23 abr 2026 | Kostenko, Petr 2338 | Bellia, Fabrizio 2379 | 0-1 | A20 English Opening: King's English Variation | FIDE World Senior Team Championships 2026 - Senior 50+ | 23 | Ver |
| 22 abr 2026 | Hebden, Mark L 2353 | Kostenko, Petr 2338 | 1-0 | B14 Caro-Kann Defense: Panov Attack, Main Line | FIDE World Senior Team Championships 2026 - Senior 50+ | 26 | Ver |
| 21 abr 2026 | Kostenko, Petr 2338 | Dahl, Fredrik A 2172 | 1-0 | A13 English Opening: Agincourt Defense, Catalan Defense Accepted | FIDE World Senior Team Championships 2026 - Senior 50+ | 61 | Ver |
| 20 abr 2026 | Ledger, Dave J 2126 | Kostenko, Petr 2338 | 0-1 | B06 Rat Defense: Accelerated Gurgenidze | FIDE World Senior Team Championships 2026 - Senior 50+ | 47 | Ver |