| Jun 19, 2026 | Mammadova | 1–0 | Mestek | 38th International Chess Tournament Open Pula 2026 | Caro-Kann Defense: De Bruycker Defense | |
| Jun 15, 2026 | Bratovic | 1–0 | Mestek | 38th International Chess Tournament Open Pula 2026 | Scandinavian Defense: Valencian Variation, Main Line | |
| May 3, 2026 | Belyaletdinov | 1–0 | Mestek | LCF | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| May 2, 2026 | Mestek | * | Verbic | Ljubljana Chess Festival | ? | |
| May 1, 2026 | Breznik | ½–½ | Mestek | Ljubljana Chess Festival | Réti Opening: Anglo-Slav Variation, Gurevich System | |
| Apr 30, 2026 | Mestek | 1–0 | Macek | Ljubljana Chess Festival | Italian Game: Evans Gambit, Stone-Ware Variation | |
| Apr 29, 2026 | Kegl | * | Mestek | Ljubljana Chess Festival | ? | |
| Apr 28, 2026 | Mencinger | * | Mestek | Ljubljana Chess Festival | ? | |
| Apr 27, 2026 | Mestek | ½–½ | Reprintsev | LCF | Scotch Game | |
| Mar 15, 2026 | Biti | ½–½ | Mestek | Bled Chess Festival 2026 | Caro-Kann Defense: De Bruycker Defense | |
| Mar 14, 2026 | Mestek | 1–0 | Vujakovic | Bled Chess Festival 2026 | Pirc Defense | |
| Mar 13, 2026 | Logar | 0–1 | Mestek | Bled Chess Festival 2026 | Caro-Kann Defense: De Bruycker Defense | |
| Mar 12, 2026 | Mestek | 1–0 | Sajovic | Bled Chess Festival 2026 | Scandinavian Defense: Main Line | |
| Mar 11, 2026 | Muri | 0–1 | Mestek | Bled Chess Festival 2026 | Caro-Kann Defense: Breyer Variation | |
| Mar 10, 2026 | Mestek | ½–½ | Macek | Bled Chess Festival 2026 | Scotch Game: Schmidt Variation | |
| Mar 10, 2026 | Zuzek | 1–0 | Mestek | Bled Chess Festival 2026 | Scandinavian Defense: Valencian Variation, Main Line | |
| Mar 9, 2026 | Mestek | ½–½ | Furlan | Bled Chess Festival 2026 | French Defense: Queen's Knight | |
| Dec 20, 2025 | Mestek | ½–½ | Zuzek | Crikvenica open | Sicilian Defense: Closed | |
| Dec 18, 2025 | Mestek | ½–½ | Feigin | Crikvenica open | Scotch Game | |
| Dec 17, 2025 | Aljo | ½–½ | Mestek | Crikvenica open | Queen's Gambit Declined: Chigorin Defense, Exchange Variation | |
| Dec 16, 2025 | Mestek | 0–1 | Radenic | Crikvenica open | French Defense: Schlechter Variation | |
| Dec 15, 2025 | Haidinger | 0–1 | Mestek | Crikvenica open | Alekhine Defense: Exchange Variation | |
| Dec 13, 2025 | Drasko | 1–0 | Mestek | Crikvenica open | King's Indian Attack, with Bf5 | |
| Jan 31, 2025 | Stopa | 1–0 | Mestek | Round 9: Stopa, Jacek - Mestek, Igor | Nimzo-Larsen Attack: Modern Variation | |
| Jan 30, 2025 | Mestek | ½–½ | Fercec | Round 8: Mestek, Igor - Fercec, Nenad | Sicilian Defense: Modern Variations | |
| Jan 29, 2025 | Skuhala | ½–½ | Mestek | Round 7: Skuhala, Barbara - Mestek, Igor | Scandinavian Defense: Valencian Variation | |
| Jan 27, 2025 | Mestek | 1–0 | Apaar Saxena | Round 5: Mestek, Igor - Apaar Saxena | Italian Game: Evans Gambit, Anderssen Variation, Cordel Line | |
| Jan 26, 2025 | Fucka | 0–1 | Mestek | Round 4: Fucka, Samo - Mestek, Igor | Scandinavian Defense: Valencian Variation, Main Line | |
| Jan 25, 2025 | Mestek | ½–½ | Tavano | Round 2: Mestek, Igor - Tavano, Leonardo | Scotch Game: Schmidt Variation | |
| Jan 24, 2025 | Drazic | 1–0 | Mestek | Round 1: Drazic, Sinisa - Mestek, Igor | Nimzo-Larsen Attack: Indian Variation | |
| May 4, 2024 | Mestek | ½–½ | Brinovec | Ljubljana chess festival 2024 | Sicilian Defense: French Variation | |
| May 3, 2024 | Rossi | 0–1 | Mestek | Ljubljana chess festival 2024 | Scandinavian Defense: Portuguese Gambit, Classical Variation | |
| May 2, 2024 | Kekič | ½–½ | Mestek | Ljubljana chess festival 2024 | English Opening: King's English Variation, Four Knights Variation, Quiet Line | |
| May 1, 2024 | Mestek | 0–1 | Urbanc | Round 6: Mestek, Igor - Urbanc, Peter | Rapport-Jobava System | |
| Apr 30, 2024 | Olenik Campa | ½–½ | Mestek | Round 5: Olenik Campa, Rudi - Mestek, Igor | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Apr 29, 2024 | Mestek | 1–0 | Gryshko | Ljubljana chess festival 2024 | Scotch Game: Schmidt Variation | |
| Apr 28, 2024 | Mestek | 0–1 | Lacasa Diaz | Round 3: Mestek, Igor - Lacasa Diaz, Josep Anton | Sicilian Defense: Accelerated Dragon, Modern Bc4 Variation | |
| Apr 28, 2024 | Škrbec | ½–½ | Mestek | Ljubljana chess festival 2024 | Queen's Gambit Accepted: Showalter Variation | |
| Apr 27, 2024 | Mestek | 1–0 | Črnivec | Ljubljana chess festival 2024 | Caro-Kann Defense: Accelerated Panov Attack | |
| Feb 2, 2024 | Mestek | 0–1 | Pagano | Hit Open 2024 | Caro-Kann Defense: Two Knights Attack | |
| Feb 1, 2024 | Jalovec | 1–0 | Mestek | Hit Open 2024 | Caro-Kann Defense | |
| Jan 30, 2024 | Mestek | 1–0 | Zlatanovic | Hit Open 2024 | Rapport-Jobava System | |
| Jan 29, 2024 | Zlatanovic | ½–½ | Mestek | Hit Open 2024 | Queen's Pawn Game: Zukertort Variation | |
| Jan 28, 2024 | Vicic | ½–½ | Mestek | Hit Open 2024 | Nimzo-Larsen Attack: Modern Variation | |
| Jan 27, 2024 | Mestek | 1–0 | Budai | Hit Open 2024 | Scotch Game: Classical Variation | |
| Jan 27, 2024 | Budai | 1–0 | Mestek | Hit Open 2024 | Sicilian Defense: O'Kelly Variation, Maróczy Bind | |
| Jan 26, 2024 | Mestek | 0–1 | Lavrencic | Hit Open 2024 | Sicilian Defense: Löwenthal Variation | |
| Oct 25, 2024 | Parker | 0–1 | Mestek | Round 7: Parker, Glen D - Mestek, Igor | Scandinavian Defense: Valencian Variation | |
| Oct 24, 2024 | Mestek | 1–0 | Romanowich | Round 6: Mestek, Igor - Romanowich, Yuri | French Defense: Two Knights Variation | |
| Oct 24, 2024 | Kruit | ½–½ | Mestek | Round 5: Kruit, Erik - Mestek, Igor | King's Gambit Accepted: Cunningham Defense, McCormick Defense | |
| Oct 23, 2024 | Pazeriene | 1–0 | Mestek | Round 4: Pazeriene, Diana - Mestek, Igor | Queen's Gambit Accepted: Alekhine Defense, Haberditz Variation | |
| Oct 22, 2024 | Mestek | 0–1 | Reizniece-Ozola | Round 3: Mestek, Igor - Reizniece-Ozola, Dana | Modern Defense: Standard Defense | |
| Oct 22, 2024 | Verlaine | 0–1 | Mestek | Round 2: Verlaine, Alexandre - Mestek, Igor | Queen's Gambit Accepted: Alekhine Defense | |
| Oct 21, 2024 | Mestek | 1–0 | Wagenaar | Round 1: Mestek, Igor - Wagenaar, Harm Theo | French Defense: Two Knights Variation | |
| Mar 22, 2023 | Azinovic | 0–1 | Mestek | Hit Open 2023 | Scotch Game: Mieses Variation | |
| Mar 21, 2023 | Mestek | ½–½ | Laco | Hit Open 2023 | Sicilian Defense: Open | |
| Mar 20, 2023 | Cvitan | 1–0 | Mestek | Hit Open 2023 | Semi-Slav Defense: Accelerated Move Order | |
| Mar 19, 2023 | Mestek | 1–0 | Pagano | 27th HIT Open | Caro-Kann Defense: Two Knights Attack | |
| Mar 18, 2023 | Bartolome Martin | 0–1 | Mestek | Hit Open 2023 | Sicilian Defense: O'Kelly Variation, Venice System | |
| Mar 17, 2023 | Mestek | ½–½ | Gruden | Hit Open 2023 | Sicilian Defense: Closed | |
| Mar 16, 2023 | Mestek | ½–½ | Goroshkov | Hit Open 2023 | Petrov's Defense: Cozio Attack | |
| Mar 16, 2023 | Drazic | 1–0 | Mestek | Hit Open 2023 | Sicilian Defense: Richter-Rauzer Variation | |
| Jan 13, 2023 | Mizicka | ½–½ | Mestek | Prague Open | Czech Tour | ? | |
| Jan 12, 2023 | Mestek | * | Fizer | Prague Open | Czech Tour | ? | |
| Jan 11, 2023 | Vojta | 1–0 | Mestek | Prague Open | Czech Tour | Caro-Kann Defense: De Bruycker Defense | |
| Jan 10, 2023 | Mestek | * | Hujo | Prague Open | Czech Tour | ? | |
| Jan 6, 2023 | Shatil | ½–½ | Mestek | Prague Open | Czech Tour | ? | |
| Sep 4, 2021 | Mestek | ½–½ | O`Gorman | XXIII Festival Trieste | Petrov's Defense: Cochrane Gambit | |
| Sep 3, 2021 | Olenik | ½–½ | Mestek | XXIII Festival Trieste | Caro-Kann Defense: De Bruycker Defense | |
| Sep 2, 2021 | Ronka | 1–0 | Mestek | XXIII Festival Trieste | Gunderam Defense | |
| Sep 1, 2021 | Mestek | 1–0 | Srebrnic | XXIII Festival Trieste | Sicilian Defense: Closed | |
| Aug 28, 2021 | Schreiner | 1–0 | Mestek | XXIII Festival Trieste | Queen's Gambit Accepted: Alekhine Defense | |
| Jul 4, 2021 | Kozlovic | ½–½ | Mestek | Terme Krka OPEN 2021 - 31. posamicno DP clanov in clanic 2021 | Benoni Defense: Semi-Benoni | |
| Jul 4, 2021 | Tomazin | ½–½ | Mestek | Terme Krka OPEN 2021 - 31. posamicno DP clanov in clanic 2021 | Queen's Pawn Game: Torre Attack, Gossip Variation | |
| Jul 3, 2021 | Mestek | 0–1 | Dobrovoljc | Terme Krka OPEN 2021 - 31. posamicno DP clanov in clanic 2021 | Scotch Game: Schmidt Variation | |
| — | Mestek | 0–1 | Hiti | LCF 2025 | French Defense: Two Knights Variation | |
| — | Schippers | ½–½ | Mestek | LCF 2025 | Scandinavian Defense: Valencian Variation, Main Line | |