| 9 ago 2026 | Gunduz, Umut Erdem 2219 | Eke, Salih 2146 | ½-½ | B30 Defensa Siciliana: Portsmouth Gambit | 2026 Türkiye Satranç Ligi (Turkish League) | İkinci Lig | 33 | Ver |
| 8 ago 2026 | Angun, Batu 2180 | Gunduz, Umut Erdem 2219 | ½-½ | B94 Defensa Siciliana: Najdorf Variation | 2026 Türkiye Satranç Ligi (Turkish League) | İkinci Lig | 24 | Ver |
| 7 ago 2026 | Temizkan, Denizcan 2207 | Gunduz, Umut Erdem 2219 | 1-0 | E10 Blumenfeld Countergambit: Spielmann Variation | 2026 Türkiye Satranç Ligi (Turkish League) | İkinci Lig | 26 | Ver |
| 5 ago 2026 | Gunduz, Umut Erdem 2219 | Yilmaz, Goktan 2162 | 1-0 | B90 Defensa Siciliana: Scheveningen Variation, Delayed Keres Attack | 2026 Türkiye Satranç Ligi (Turkish League) | İkinci Lig | 31 | Ver |
| 3 ago 2026 | Gunduz, Umut Erdem 2219 | Kavri, Yusuf Eren 2147 | 0-1 | C65 Apertura Española (Ruy López): Berlin Defense, Anti-Berlin Variation | 2026 Türkiye Satranç Ligi (Turkish League) | İkinci Lig | 54 | Ver |
| 14 jul 2026 | Gunduz, Umut Erdem 2206 | Aydogan, Arya 2036 | ½-½ | C47 Apertura de los Cuatro Caballos: Scotch Variation Accepted, Main Line | 2. Uluslararası Pamukkale Açık Satranç Turnuvası | Category A | 10 | Ver |
| 14 jul 2026 | Huseyinoglu, Alihan 2395 | Gunduz, Umut Erdem 2206 | 1-0 | E44 Defensa Nimzoindia: St. Petersburg Variation, American Variation | 2. Uluslararası Pamukkale Açık Satranç Turnuvası | Category A | 85 | Ver |
| 13 jul 2026 | Gunduz, Umut Erdem 2206 | Annaberdiyev, Meylis 2427 | ½-½ | B72 Defensa Siciliana: Dragon Variation, Classical Variation, Grigoriev Variation | 2. Uluslararası Pamukkale Açık Satranç Turnuvası | Category A | 46 | Ver |
| 5 jul 2026 | Gunduz, Umut Erdem 2206 | Citak, Selim 2310 | ½-½ | B45 Defensa Siciliana: Four Knights Variation | 12th Cesme International Open Chess Tournament | 15 | Ver |
| 4 jul 2026 | Shinkorenko, Ivan Al 2091 | Gunduz, Umut Erdem 2206 | 0-1 | C42 Defensa Petrov: Millennium Attack | 12th Cesme International Open Chess Tournament | 22 | Ver |
| 3 jul 2026 | Gunduz, Umut Erdem 2206 | Dirikolu, Deniz 2373 | 0-1 | C41 Defensa Philidor: Lion Variation | 12th Cesme International Open Chess Tournament | 25 | Ver |
| 2 jul 2026 | Gucer, Gunes 2006 | Gunduz, Umut Erdem 2206 | 0-1 | B31 Defensa Siciliana: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | 12th Cesme International Open Chess Tournament | 51 | Ver |
| 2 jul 2026 | Gunduz, Umut Erdem 2206 | Rakhmatullaev, Muhammadsolih 2085 | 1-0 | B19 Defensa Caro-Kann: Classical Variation, Lobron System | 12th Cesme International Open Chess Tournament | 40 | Ver |
| 1 jul 2026 | Karayayla, Doruk 2012 | Gunduz, Umut Erdem 2206 | 1-0 | C84 Apertura Española (Ruy López): Closed, Martinez Variation | 12th Cesme International Open Chess Tournament | 50 | Ver |
| 30 jun 2026 | Haznedaroglu, Kivanc 2362 | Gunduz, Umut Erdem 2238 | ½-½ | D36 Gambito de Dama rehusado: Exchange Variation, Reshevsky Variation | 12th Cesme International Open Chess Tournament | 44 | Ver |
| 30 jun 2026 | Gunduz, Umut Erdem 2238 | Ebrahimi Herab, Hamidreza 2354 | ½-½ | B72 Defensa Siciliana: Dragon Variation, Classical Variation, Amsterdam Variation | 12th Cesme International Open Chess Tournament | 34 | Ver |
| 29 jun 2026 | Gunduz, Umut Erdem 2238 | Bukreev, Stanislav 2385 | 1-0 | C02 Defensa Francesa: Advance Variation, Paulsen Attack | 12th Cesme International Open Chess Tournament | 23 | Ver |
| 20 abr 2026 | Gunduz, Umut Erdem 2241 | Afanasiev, Nikita 2541 | 0-1 | B40 Defensa Siciliana: Delayed Alapin Variation, with e6 | Manisa BSB 2. Mesir Uluslararası Açık Satranç Turnuvası | 35 | Ver |
| 7 dic 2025 | Gunduz, Umut Erdem 2232 | Gokerkan, Cem Kaan 2510 | 0-1 | C69 Apertura Española (Ruy López): Exchange Variation, Normal Variation | Round 2 | Game 2: Gunduz, Umut Erdem - Gokerkan, Cem Kaan | 44 | Ver |
| 6 dic 2025 | Gokerkan, Cem Kaan 2510 | Gunduz, Umut Erdem 2232 | ½-½ | D31 Gambito de Dama rehusado: Janowski Variation | Round 2 | Game 1: Gokerkan, Cem Kaan - Gunduz, Umut Erdem | 36 | Ver |