| 30 ago 2026 | Iturrizaga Bonelli, Eduardo 2622 | Zaiarski, Stepan 2215 | 1-0 | E73 Defensa India de Rey: Semi-Averbakh System | Sofia Cup 2026 - Balkan Rapid & Blitz Championships | Blitz | 29 | Ver |
| 23 ago 2026 | Poon, Pak Yu 2124 | Zaiarski, Stepan 2143 | 1-0 | E94 Defensa India de Rey: Orthodox Variation | Oberbank Challenger Open 2026 | 23 | Ver |
| 22 ago 2026 | Zaiarski, Stepan 2143 | Soumya, Swaminathan 2266 | ½-½ | B28 Defensa Siciliana: O'Kelly Variation, Maróczy Bind | Oberbank Challenger Open 2026 | 52 | Ver |
| 21 ago 2026 | Engelhart, Achim, Dr. 2022 | Zaiarski, Stepan 2143 | 0-1 | C95 Apertura Española (Ruy López): Closed, Breyer Defense, Zaitsev Hybrid | Oberbank Challenger Open 2026 | 58 | Ver |
| 20 ago 2026 | Zaiarski, Stepan 2143 | Groetz, Harald 2221 | 0-1 | B42 Defensa Siciliana: Kan Variation, Modern Variation | Oberbank Challenger Open 2026 | 60 | Ver |
| 19 ago 2026 | Kristoferitsch, Daniel 2327 | Zaiarski, Stepan 2143 | 0-1 | A15 Apertura Inglesa: Anglo-Indian Defense, King's Indian Formation | Oberbank Challenger Open 2026 | 61 | Ver |
| 18 ago 2026 | Zaiarski, Stepan 2143 | Urbanec, Nino 2000 | 1-0 | C11 Defensa Francesa: Steinitz Variation, Boleslavsky Variation | Oberbank Challenger Open 2026 | 46 | Ver |
| 17 ago 2026 | Hertneck, Gerald 2415 | Zaiarski, Stepan 2143 | 1-0 | E82 Defensa India de Rey: Sämisch Variation, Double Fianchetto | Oberbank Challenger Open 2026 | 47 | Ver |
| 2 abr 2026 | Zaiarski, Stepan 2086 | Wu, Yixing 2343 | ½-½ | B44 Defensa Siciliana: Taimanov Variation | X Open Semana Santa 2026 - Grupo A | 62 | Ver |
| 15 mar 2026 | Mihaylov, Bozhidar 2085 | Zaiarski, Stepan 2084 | ½-½ | C54 Apertura Italiana: Classical Variation, Giuoco Pianissimo | Momchilgrad Classics 2026 | 43 | Ver |
| 14 mar 2026 | Zaiarski, Stepan 2084 | Delchev, Petar 2096 | 1-0 | B01 Defensa Escandinava: Modern Variation | Momchilgrad Classics 2026 | 64 | Ver |
| 13 mar 2026 | Zaiarski, Stepan 2084 | Boev, Viktor 2235 | 0-1 | E08 Apertura Catalana: Closed | Momchilgrad Classics 2026 | 45 | Ver |