| 26 abr 2026 | Baum, Jonasz 2447 | Efimenko, Zahar 2556 | 1-0 | A29 English Opening: King's English Variation, Four Knights Variation, Fianchetto Line | German Bundesliga 2025/26 | 45 | Ver |
| 25 abr 2026 | Efimenko, Zahar 2556 | Druska, Juraj 2458 | ½-½ | C02 French Defense: Advance Variation, Paulsen Attack | German Bundesliga 2025/26 | 30 | Ver |
| 24 abr 2026 | Predojevic, Borki 2558 | Efimenko, Zahar 2556 | ½-½ | C54 Italian Game: Classical Variation, Greco Gambit, Modern Line | BL 2526 SV Werder Bremen - SK Kirchweyhe | 21 | Ver |
| 22 mar 2026 | Janik, Igor 2503 | Efimenko, Zahar 2562 | ½-½ | A15 English Opening: Anglo-Indian Defense, King's Knight Variation | German Bundesliga 2025/26 | 21 | Ver |
| 21 mar 2026 | Efimenko, Zahar 2562 | Lampert, Jonas 2536 | ½-½ | C26 Bishop's Opening: Vienna Hybrid, Spielmann Attack | 1. BL Pauli | 21 | Ver |
| 1 mar 2026 | Kryvoruchko, Yuriy 2616 | Efimenko, Zahar 2562 | ½-½ | C44 King's Knight Opening: Konstantinopolsky | 1. BL Bremen | 38 | Ver |
| 28 feb 2026 | Efimenko, Zahar 2562 | Korobov, Anton 2603 | 0-1 | B51 Sicilian Defense: Moscow Variation | 1. BL Bremen | 33 | Ver |
| 8 feb 2026 | Efimenko, Zahar 2562 | Alonso Rosell, Alvar 2552 | ½-½ | B28 Sicilian Defense: O'Kelly Variation, Venice System, Gambit Line | Bundesliga - Kirchweyhe | 41 | Ver |
| 7 feb 2026 | Bogosavljevic, Boban 2465 | Efimenko, Zahar 2562 | ½-½ | A05 King's Indian Attack | Bundesliga - Kirchweyhe | 23 | Ver |
| 11 ene 2026 | Efimenko, Zahar 2563 | Winterberg, Lukas 2425 | ½-½ | C42 Petrov's Defense: Classical Attack, Staunton Variation | 1. BL Bremen | 44 | Ver |
| 10 ene 2026 | Bacrot, Etienne 2631 | Efimenko, Zahar 2563 | ½-½ | C89 Ruy Lopez: Marshall Attack, Modern Variation | 1. BL Bremen | 31 | Ver |
| 7 dic 2025 | Ragger, Markus 2563 | Efimenko, Zahar 2564 | ½-½ | E48 Nimzo-Indian Defense: Normal Variation, Classical Defense | Deutsche Schach-Bundesliga | 25 | Ver |
| 6 dic 2025 | Efimenko, Zahar 2564 | Pijpers, Arthur 2475 | ½-½ | B52 Sicilian Defense: Moscow Variation, Main Line | Deutsche Schach-Bundesliga | 51 | Ver |
| 28 sep 2025 | Shengelia, David 2480 | Efimenko, Zahar 2565 | ½-½ | E53 Nimzo-Indian Defense: Normal Variation, Gligoric System | Schachbundesliga 2025/26 | 28 | Ver |
| 27 sep 2025 | Efimenko, Zahar 2565 | Kamsky, Gata 2606 | ½-½ | C88 Ruy Lopez: Closed, Anti-Marshall | Schachbundesliga 2025/26 | 20 | Ver |