 
                                    | Date | Players & Opening | Result | ECO | View | 
|---|---|---|---|---|
| 2023.07.09 | Hajek, Jiri (1692)  vs (1660) Matlocha, Lubomir Šachový festival Ceské Budejovice Open B Caro-Kann | 1-0 | B15 | |
| 2023.07.08 | Cech, Nicolas vs (1692) Hajek, Jiri Šachový festival Ceské Budejovice Open B Irregular Queen's Pawn - Kotov (Robatsch) | 0-1 | A40 | |
| 2023.07.07 | Hajek, Jiri (1692)  vs (1463) Barta, David Šachový festival Ceské Budejovice Open B Petrov - Classical (Marshall) | 1/2-1/2 | C42 | |
| 2023.07.06 | Neumaier, Tomas vs (1692) Hajek, Jiri Šachový festival Ceské Budejovice Open B Scandinavian | 0-1 | B01 | |
| 2023.07.05 | Hajek, Jiri (1692)  vs (1483) Velim, Vojtech Šachový festival Ceské Budejovice Open B Caro-Kann Knight Classical | 0-1 | B18 | |
| 2023.07.04 | Weiss, Pavel (1550)  vs (1692) Hajek, Jiri Šachový festival Ceské Budejovice Open B Scandinavian | 1/2-1/2 | B01 | |
| 2023.07.03 | Hajek, Jiri (1692)  vs (1605) Sedivy, Karel Šachový festival Ceské Budejovice Open B Caro-Kann Knight Classical | 0-1 | B18 | |
| 2023.07.02 | Jirik, Radovan (1520)  vs (1692) Hajek, Jiri Šachový festival Ceské Budejovice Open B Reti - Small Center | 0-1 | B06 | |
| 2023.07.01 | Hajek, Jiri (1692)  vs (1376) Kral, Ladislav Šachový festival Ceské Budejovice Open B French Paulsen - Swiss | 1-0 | C11 | |
| 2022.07.09 | Hajek, Jiri (1725)  vs (1341) Policar, Martin FIDE Open Šachové univerzity QCC CB 2022 Alekhine | 1-0 | B02 | |
| 2022.07.08 | Bittner, Rudolf (1967)  vs (1725) Hajek, Jiri FIDE Open Šachové univerzity QCC CB 2022 Sicilian - Morra | 1-0 | B32 | |
| 2022.07.07 | Sulcova, Tereza Radmila (1538)  vs (1725) Hajek, Jiri FIDE Open Šachové univerzity QCC CB 2022 Amar opening | 0-1 | A00 | |
| 2022.07.06 | Hajek, Jiri (1725)  vs (1403) Hladky, Jiri FIDE Open Šachové univerzity QCC CB 2022 French Paulsen - Swiss | 0-1 | C11 | |
| 2022.07.05 | Kutil, Adam (1523)  vs (1725) Hajek, Jiri FIDE Open Šachové univerzity QCC CB 2022 Sicilian | 0-1 | B32 | |
| 2022.07.04 | Hajek, Jiri (1725)  vs (1581) Kirchner, Michal FIDE Open Šachové univerzity QCC CB 2022 Sicilian - Tartakower | 1-0 | B53 | |
| 2022.07.03 | Hajek, Jiri (1725)  vs (1408) Kral, Ladislav FIDE Open Šachové univerzity QCC CB 2022 French Paulsen - Swiss | 1-0 | C11 | |
| 2022.07.02 | Garabik, Marek (1413)  vs (1725) Hajek, Jiri FIDE Open Šachové univerzity QCC CB 2022 Scandinavian | 1/2-1/2 | B01 | |
| 2022.07.01 | Hajek, Jiri (1725)  vs (1300) Slaby, Martin FIDE Open Šachové univerzity QCC CB 2022 Sicilian Paulsen | 1-0 | B43 | |
| 2016.08.12 | Mach, Ondrej (1734)  vs (1829) Hajek, Jiri Open Letní Praha 2016 - B Semi-Slav Meran | 0-1 | D47 | |
| 2016.08.07 | De Bruyn, Aleida (1651)  vs (1829) Hajek, Jiri Open Letní Praha 2016 - B English Anglo-Slav | 1-0 | A11 | |
| 2013.06.25 | HAJEK, Jiri (1870)  vs (2364) SERGEYEV, Alexander 13th IPCA WORLD INDIVIDUAL CHESS CHAMPONSHIP 2013 Sicilian Nimzovich | 0-1 | B29 | |
| 2013.06.24 | GELMAN, Gennadiy (1966)  vs (1870) HAJEK, Jiri 13th IPCA WORLD INDIVIDUAL CHESS CHAMPONSHIP 2013 Nimzovich - Classical | 0-1 | A01 | |
| 2013.06.23 | MAREK, Petr (1680)  vs (1870) HAJEK, Jiri 13th IPCA WORLD INDIVIDUAL CHESS CHAMPONSHIP 2013 Queen's Pawn | 0-1 | D00 | |
| 2013.06.22 | HAJEK, Jiri (1870)  vs (1995) VACULIK, Jakub 13th IPCA WORLD INDIVIDUAL CHESS CHAMPONSHIP 2013 French Advance - Nimzovich | 0-1 | C02 | |
| 2013.06.21 | RYCHTECKY, Pavel (1754)  vs (1870) HAJEK, Jiri 13th IPCA WORLD INDIVIDUAL CHESS CHAMPONSHIP 2013 Scandinavian | 0-1 | B01 | |
| 2013.06.19 | HAJEK, Jiri (1870)  vs (2081) ZYKINA, Nadezhda 13th IPCA WORLD INDIVIDUAL CHESS CHAMPONSHIP 2013 Philidor | 0-1 | C41 | |
| 2013.06.19 | VIKTORIN, Petr (1748)  vs (1870) HAJEK, Jiri 13th IPCA WORLD INDIVIDUAL CHESS CHAMPONSHIP 2013 Sicilian | 1/2-1/2 | B33 | |
| 2013.06.18 | HAJEK, Jiri (1870)  vs (2258) BALACEK, Tadeas 13th IPCA WORLD INDIVIDUAL CHESS CHAMPONSHIP 2013 French Tarrasch | 0-1 | C03 | |
| 2012.08.27 | Novotny, Josef (2100)  vs (2084) Hajek, Jiri 14. Mezinárodní rychnovský šachový festival senioru, kategorie S60 Van't Kruijs opening | 1-0 | A00 | |
| 2012.08.26 | Jelinek, Vaclav (2020)  vs (2084) Hajek, Jiri 14. Mezinárodní rychnovský šachový festival senioru, kategorie S60 Benko's opening | 1/2-1/2 | A00 | |
| 2012.08.25 | Hajek, Jiri (2084)  vs (2207) Sejkora, Vlastimil 14. Mezinárodní rychnovský šachový festival senioru, kategorie S60 King's Indian Classical | 0-1 | E91 | |
| 2012.08.24 | Hajek, Jiri (2084)  vs (2077) Pise, Jan 14. Mezinárodní rychnovský šachový festival senioru, kategorie S60 Semi-Slav - Anti-Meran | 1-0 | D43 | |
| 2012.08.23 | Vesely, Emanuel (1952)  vs (2084) Hajek, Jiri 14. Mezinárodní rychnovský šachový festival senioru, kategorie S60 Caro-Kann Exchange - Rubinstein | 0-1 | B13 | |
| 2012.08.22 | Hajek, Jiri (2084)  vs (2006) Pribyl, Jaroslav 14. Mezinárodní rychnovský šachový festival senioru, kategorie S60 Benoni | 1/2-1/2 | A56 | |
| 2012.08.21 | Lexa, Vaclav (1923)  vs (2084) Hajek, Jiri 14. Mezinárodní rychnovský šachový festival senioru, kategorie S60 Queen's Gambit Declined Semi-Pillsbury | 0-1 | D50 | |
| 2012.08.20 | Hajek, Jiri (2084)  vs (1809) Bainhofner, Jiri 14. Mezinárodní rychnovský šachový festival senioru, kategorie S60 King's Indian Yugoslav - Taimanov | 1-0 | E97 | |
| 2011.08.28 | Nemec, Otakar (1889)  vs (2115) Hajek, Jiri 13. Rychnovsky sachovy festival S50 Reti King's Indian | 0-1 | A07 | |
| 2011.08.27 | Hajek, Jiri (2115)  vs (2080) Lorenc, Oldrich 13. Rychnovsky sachovy festival S50 Indian Knight | 1/2-1/2 | A46 | |
| 2011.08.26 | Humlicek, Vojtech (1909)  vs (2115) Hajek, Jiri 13. Rychnovsky sachovy festival S50 Caro-Kann Knight Classical | 0-1 | B18 | |
| 2011.08.25 | Chladek, Vaclav (2045)  vs (2115) Hajek, Jiri 13. Rychnovsky sachovy festival S50 Caro-Kann Exchange - Rubinstein | 1/2-1/2 | B13 | |
| 2011.08.24 | Hajek, Jiri (2115)  vs (1678) Kral, Ladislav 13. Rychnovsky sachovy festival S50 Slav Two Knights | 1-0 | D15 | |
| 2011.08.23 | Dvorak, Eduard (1881)  vs (2115) Hajek, Jiri 13. Rychnovsky sachovy festival S50 English Symmetrical Two Knights - Four Knights | 0-1 | A35 | |
| 2011.08.22 | Hajek, Jiri (2115)  vs (1796) Nisztuk, Michal 13. Rychnovsky sachovy festival S50 Slav Rubinstein | 1/2-1/2 | D11 | |
| 2005.08.19 | Daum, Norman (2152)  vs (1958) Hajek, Jiri FIDE OPEN Stare Mesto 2005 Sicilian - Rossolimo | 1-0 | B30 | |
| 2005.08.12 | Hajek, Jiri (1958)  vs (2342) Jurcik, Marian FIDE OPEN Stare Mesto 2005 Sicilian | 0-1 | B30 | 
| Date | Players & Opening | Result | ECO | View | 
|---|---|---|---|---|
| 2024.10.20 | Krajina,A (2124) vs (2260) Hajek,Oskar TCh-CZE 1 Liga Vychod Queen's Pawn Zukertort - Symmetrical | 1-0 | D02 | |
| 2025.02.16 | Fargac,M (2347) vs (2260) Hajek,Oskar TCh-CZE 1 Liga Vychod Indian | 1-0 | A45 | |
| 2025.03.16 | Hajek,Oskar (2198) vs (2232) Krak,T ECo-C TCh-SVK 2024-25 Indian | 1/2-1/2 | A45 | |
| 2025.03.15 | Cech,P (2312) vs (2198) Hajek,Oskar ECo-C TCh-SVK 2024-25 Queen's Gambit Accepted | 1/2-1/2 | D20 | |
| 2025.01.19 | Hajek,Oskar (2251) vs (2305) Motuz,K ECo-C TCh-SVK 2024-25 Four Knights - Scotch | 1/2-1/2 | C47 | |
| 2025.01.18 | Skreko,Igor (2157) vs (2251) Hajek,Oskar ECo-C TCh-SVK 2024-25 Spanish Morphy - Schliemann | 1-0 | C70 | |
| 2025.02.02 | Hajek,Oskar (2260) vs (2279) Pisk,P TCh-CZE 1 Liga Vychod Queen's Pawn - Chigorin | 1/2-1/2 | D00 | |
| 2025.03.22 | Kula,Dominik (2200) vs (2260) Hajek,Oskar TCh-CZE 1 Liga Vychod Spanish Morphy - Cozio | 1/2-1/2 | C70 | |
| 2025.01.05 | Ondracek,Ondrej (2105) vs (2260) Hajek,Oskar TCh-CZE 1 Liga Vychod Two Knights - Modern Bishop | 0-1 | C55 | |
| 2024.11.10 | Sramek,Vojtech (2233) vs (2260) Hajek,Oskar TCh-CZE 1 Liga Vychod Petrov - Nimzovich | 0-1 | C42 | |
| 2024.02.18 | Hajek,Oskar (2226) vs (2124) Sikora,J TCh-CZE 1 Liga Vychod Indian | 1-0 | A45 | |
| 2024.03.03 | Hajek,Oskar (2226) vs (2073) Jirousek,Jan TCh-CZE 1 Liga Vychod Irregular King's Pawn - Owen | 1-0 | B00 | |
| 2024.08.06 | Hajek,Oskar (2251) vs (2087) Schut,Ha Titled Tue 6th Aug Early English Anglo-Indian | 0-1 | A15 | |
| 2024.08.25 | Hajek,Oskar (2251) vs (2130) Soural,J Jesenik Open 2024 Indian | 1/2-1/2 | A45 | |
| 2024.08.24 | Slovak,Kilian (2250) vs (2251) Hajek,Oskar Jesenik Open 2024 Alekhine - Exchange | 1/2-1/2 | B03 | |
| 2024.08.23 | Hajek,Oskar (2251) vs (2219) Gnida,Patrik Jesenik Open 2024 Petrov Modern | 1-0 | C43 | |
| 2024.08.22 | Banasik,K (2180) vs (2251) Hajek,Oskar Jesenik Open 2024 Queen's Gambit Accepted - Janowski | 0-1 | D25 | |
| 2024.08.21 | Hajek,Oskar (2251) vs (2514) Polak,T Jesenik Open 2024 Sicilian - Hungarian | 1/2-1/2 | B27 | |
| 2024.08.20 | Hanl,Frantisek (2102) vs (2251) Hajek,Oskar Jesenik Open 2024 Vienna Falkbeer (Three Knights) | 0-1 | C28 | |
| 2024.08.19 | Hajek,Oskar (2251) vs (2120) Munk,Pe Jesenik Open 2024 Indian | 1/2-1/2 | A45 | |
| 2024.08.18 | Olsar,R (2013) vs (2251) Hajek,Oskar Jesenik Open 2024 Spanish Morphy - Exchange (Classical) | 0-1 | C68 | |
| 2024.08.17 | Hajek,Oskar (2251) vs (1947) Slavinsky,R Jesenik Open 2024 Pirc | 1-0 | B07 | |
| 2022.12.03 | Hajek,Oskar (2220) vs (2359) Maslik,M TCh-AUT 2nd Ost 2022-23 Sicilian - Rossolimo | 1-0 | B30 | |
| 2023.01.21 | Hajek,Oskar (2220) vs (2098) Devine,Christopher TCh-AUT 2nd Ost 2022-23 Robatsch | 1-0 | B06 | |
| 2023.01.22 | Herman,D (2185) vs (2220) Hajek,Oskar TCh-AUT 2nd Ost 2022-23 Dunst (Sleipner, Heinrichsen) opening | 0-1 | A00 | |
| 2023.04.02 | Sikorova,O (2113) vs (2220) Hajek,Oskar TCh-CZE 1 Liga Vychod English Symmetrical | 0-1 | A30 | |
| 2023.02.18 | Hajek,Oskar (2220) vs (2105) Bauer,Thomas TCh-AUT 2nd Ost 2022-23 Bogo-Indian | 1-0 | E11 | |
| 2022.11.20 | Wilke,W (2182) vs (2220) Hajek,Oskar TCh-AUT 2nd Ost 2022-23 Pirc | 1/2-1/2 | B07 | |
| 2022.11.19 | Mozny,M (2250) vs (2220) Hajek,Oskar TCh-AUT 2nd Ost 2022-23 Old Benoni | 1/2-1/2 | A43 | |
| 2022.11.08 | Zia,Tahsin Tajwar (2241) vs (2202) Hajek,Oskar Titled Tue 8th Nov Early Queen's Pawn Zukertort | 1-0 | D02 | |
| 2022.04.03 | Cu Hor,W (2320) vs (2168) Hajek,Oskar TCh-AUT 2nd Ost 2021-22 Reti | 1-0 | A04 | |
| 2021.10.17 | Stadler,P (2002) vs (2168) Hajek,Oskar TCh-AUT 2nd Ost 2021-22 Indian Knight - Spielmann | 0-1 | A46 | |
| 2021.10.16 | Hajek,Oskar (2168) vs (2074) Schmidrathner,Christian TCh-AUT 2nd Ost 2021-22 Sicilian - Chekhover (Zaitsev) | 1/2-1/2 | B53 | |
| 2022.03.13 | Hechl,Fabian (2113) vs (2168) Hajek,Oskar TCh-AUT 2nd Ost 2021-22 Pirc | 0-1 | B07 | |
| 2022.02.27 | Hajek,Oskar (2168) vs (2210) Brod,M TCh-AUT 2nd Ost 2021-22 French Closed Tarrasch | 1-0 | C06 | |
| 2022.02.26 | Gattermayer,R (1993) vs (2168) Hajek,Oskar TCh-AUT 2nd Ost 2021-22 Pirc | 0-1 | B07 | |
| 2022.02.13 | Steiner,Ad (2234) vs (2168) Hajek,Oskar TCh-AUT 2nd Ost 2021-22 Pirc | 1-0 | B07 | |
| 2022.01.15 | Hajek,Oskar (2168) vs (2130) Miazhynski,Yuri TCh-AUT 2nd Ost 2021-22 Pirc | 1/2-1/2 | B07 | |
| 2021.10.05 | Hajek,Oskar (2168) vs (2146) Ramasindraibe,Girard Titled Tuesday 5th Oct Pirc | 1-0 | B07 | |
| 2021.10.19 | Hajek,Oskar (2168) vs (2662) Kamsky,G Titled Tuesday 19th Oct Sicilian | 0-1 | B40 | |
| 2021.11.30 | Hajek,Oskar (2184) vs (2085) De Silva,L M S T Titled Tuesday 30th Nov Spanish Morphy - Archangelsk (Planinc) | 0-1 | C78 | |
| 2021.08.17 | Hajek,Oskar (2165) vs (2631) Paravyan,D Titled Tuesday 17th Aug Spanish Schliemann - Tartakower | 0-1 | C63 | |
| 2021.08.06 | Bluebaum,K (2281) vs (1958) Hajek,Zdenek 8th Prague Summer Open Neo-Indian - Exchange | 1-0 | D35 | |
| 2021.06.15 | Hajek,Oskar (2165) vs (2475) Aitbayev,A Titled Tuesday 15th June French Open Tarrasch | 0-1 | C07 | |
| 2021.04.17 | Sladek,Jar (1877) vs Hajek,Petr Betsys ch-CZE On/L Blitz Scotch - Scotch | 1-0 | C45 | |
| 2021.04.17 | Hajek,Petr vs (1229) Nikolinko,Tomas Betsys ch-CZE On/L Blitz Queen's Gambit Albin | 1-0 | D08 | |
| 2021.05.11 | Hajek,Oskar (2165) vs (2314) Mohammad Fahad,Rahman Titled Tuesday 11th May Sicilian Alapin | 0-1 | B22 | |
| 2021.04.17 | Novak,Vi (1995) vs Hajek,Petr Betsys ch-CZE On/L Blitz Vienna Falkbeer | 1-0 | C26 | |
| 2021.04.17 | Krajcovic,Fi (1630) vs Hajek,Petr Betsys ch-CZE On/L Blitz Evans Gambit - Classical | 0-1 | C51 | |
| 2021.04.17 | Hajek,Petr vs (2040) Joukl,Z Betsys ch-CZE On/L Blitz Slav | 0-1 | D10 | |
| 2021.04.17 | Hajek,Petr vs (1195) Saskova,Renata Betsys ch-CZE On/L Blitz Queen's Pawn - Mason | 1-0 | D00 | |
| 2021.04.17 | Mach,Ondrej (1824) vs Hajek,Petr Betsys ch-CZE On/L Blitz Queen's Gambit - Marshall | 1-0 | D06 | |
| 2021.04.17 | Hajek,Petr vs (1394) Porazil,Jan Frantisek Betsys ch-CZE On/L Blitz Queen's Gambit Declined - Harrwitz | 1-0 | D35 | |
| 2021.04.17 | Cenek,Matyas vs Hajek,Petr Betsys ch-CZE On/L Blitz Two Knights - Fritz | 1-0 | C57 | |
| 2021.04.17 | Hajek,Petr vs Lang,Tomas Betsys ch-CZE On/L Blitz Queen's Gambit - Austrian | 0-1 | D06 | |
| 2021.04.17 | Macho,Michal vs Hajek,Petr Betsys ch-CZE On/L Blitz Queen's Gambit - Marshall | 0-1 | D06 | |
| 2021.04.17 | Hajek,Petr vs (1892) Broz,Petr Betsys ch-CZE On/L Blitz Indian - Trompowsky | 0-1 | A45 | |
| 2021.04.17 | Hajek,Petr vs (2152) Gloser,David Betsys ch-CZE On/L Blitz Queen's Gambit Declined | 0-1 | D30 | |
| 2021.01.19 | Saldano Dayer,H (2429) vs (2165) Hajek,Oskar Titled Tuesday 19th Jan Slav Rubinstein - Neo-Gruenfeld (Schlechter) | 0-1 | D70 | |
| 2021.01.19 | Hajek,Oskar (2165) vs (2321) Przybylski,W Titled Tuesday 19th Jan Sicilian Alapin | 0-1 | B22 | |
| 2021.01.19 | Fernandez Hernandez,A (2319) vs (2165) Hajek,Oskar Titled Tuesday 19th Jan Caro-Kann Exchange | 1-0 | B13 | |
| 2021.02.02 | Ptacnikova,L (2130) vs (2165) Hajek,Oskar Titled Tuesday 2nd Feb English Anglo-Slav | 1-0 | A11 | |
| 2021.01.19 | Hajek,Oskar (2165) vs (2224) Terletsky,O Titled Tuesday 19th Jan Spanish Closed | 1-0 | C90 | |
| 2021.01.19 | Maiorov,N1 (2495) vs (2165) Hajek,Oskar Titled Tuesday 19th Jan King's Indian | 1/2-1/2 | E61 | |
| 2021.02.02 | Kornyukov,A (2452) vs (2165) Hajek,Oskar Titled Tuesday 2nd Feb Slav Delmar | 1-0 | D12 | |
| 2021.02.02 | Bouget,A (2247) vs (2165) Hajek,Oskar Titled Tuesday 2nd Feb Slav Czech - Carlsbad | 0-1 | D17 | |
| 2021.01.19 | Villalba,M (2258) vs (2165) Hajek,Oskar Titled Tuesday 19th Jan Caro-Kann Exchange - Panov | 1-0 | B13 | |
| 2021.01.26 | Simonovic,M (2119) vs (2165) Hajek,Oskar Titled Tuesday 26th Jan Old Benoni | 1-0 | A43 | |
| 2021.01.19 | Hajek,Oskar (2165) vs (2321) Kulkarni,R Titled Tuesday 19th Jan Robatsch | 1/2-1/2 | B06 | |
| 2021.02.02 | Hajek,Oskar (2165) vs (2199) Lehtosaari,Mauri Titled Tuesday 2nd Feb Sicilian - Kveinis | 0-1 | B40 | |
| 2021.01.19 | Halkias,S (2567) vs (2165) Hajek,Oskar Titled Tuesday 19th Jan Reti Zukertort - Geller | 1-0 | D15 | |
| 2021.02.02 | Manukian,Ar (2196) vs (2165) Hajek,Oskar Titled Tuesday 2nd Feb Caro-Kann - Advance | 1/2-1/2 | B12 | |
| 2021.01.19 | Hajek,Oskar (2165) vs (2593) Goryachkina,A Titled Tuesday 19th Jan Caro-Kann - Advance | 1/2-1/2 | B12 | |
| 2021.02.09 | Hajek,Oskar (2165) vs (2295) Goltseva,Ekaterina Titled Tuesday 9th Feb Indian | 0-1 | A45 | |
| 2021.02.02 | Hajek,Oskar (2165) vs (1972) Marcinczyk,Monika Titled Tuesday 2nd Feb Sicilian Rossolimo (Fianchetto) - Rossolimo | 1-0 | B31 | |
| 2021.01.26 | Greet,A (2417) vs (2165) Hajek,Oskar Titled Tuesday 26th Jan Caro-Kann - Advance | 1-0 | B12 | |
| 2021.01.19 | Hajek,Oskar (2165) vs (2381) Sulashvili,M Titled Tuesday 19th Jan Caro-Kann - Advance | 1-0 | B12 | |
| 2021.02.09 | Quinonez Garcia,S (2240) vs (2165) Hajek,Oskar Titled Tuesday 9th Feb Old Benoni | 1-0 | A43 | |
| 2021.02.02 | Hajek,Oskar (2165) vs (2416) Mazur,Ste Titled Tuesday 2nd Feb Spanish Morphy - Moller | 0-1 | C78 | |
| 2021.02.09 | Oliveira,Si (2321) vs (2165) Hajek,Oskar Titled Tuesday 9th Feb Sicilian Rauzer (Modern) - Two Knights | 1-0 | B67 | |
| 2021.01.26 | Hamley,Ryan (2039) vs (2165) Hajek,Oskar Titled Tuesday 26th Jan Slav Czech - Carlsbad | 1-0 | D17 | |
| 2021.02.02 | Primbetov,K (2207) vs (2165) Hajek,Oskar Titled Tuesday 2nd Feb Benko's opening | 1-0 | A00 | |
| 2021.02.09 | Hajek,Oskar (2165) vs (2397) Harshavardhan,G B Titled Tuesday 9th Feb Spanish Morphy - Exchange | 0-1 | C68 | |
| 2021.01.26 | Agibileg,Uurtsaikh (2413) vs (2165) Hajek,Oskar Titled Tuesday 26th Jan Slav Czech - Carlsbad | 0-1 | D17 | |
| 2021.02.02 | Vasli,A (2384) vs (2165) Hajek,Oskar Titled Tuesday 2nd Feb Caro-Kann - Advance | 1-0 | B12 | |
| 2021.02.09 | Hajek,Oskar (2165) vs (2311) Dobrikov,Marco Titled Tuesday 9th Feb Sicilian - Chekhover | 1-0 | B53 | |
| 2021.01.26 | Hajek,Oskar (2165) vs (2321) Przybylski,W Titled Tuesday 26th Jan Sicilian Alapin | 0-1 | B22 | |
| 2021.01.26 | Hajek,Oskar (2165) vs (2118) Miroshnik,Ekaterina Titled Tuesday 26th Jan Pirc | 0-1 | B07 | |
| 2020.12.19 | Robles Aguilar,Enrique Alfonso vs (2165) Hajek,Oskar Chess.com Bullet Open 1 Pirc | 1-0 | B07 | |
| 2020.12.19 | Blanco,Ce (2065) vs (2165) Hajek,Oskar Chess.com Bullet Open 1 Old Benoni | 1/2-1/2 | A43 | |
| 2020.12.22 | Hajek,Oskar (2165) vs (2488) Kjartansson,G Titled Tuesday 22nd Dec Sicilian - Chekhover | 0-1 | B53 | |
| 2020.12.19 | Hajek,Oskar (2165) vs (2470) Gadimbayli,Abdulla Chess.com Bullet Open 1 Irregular King's Knight - Queen's Pawn | 0-1 | C40 | |
| 2020.12.19 | Hajek,Oskar (2165) vs (2223) Acor,C Chess.com Bullet Open 1 Spanish - Cozio | 0-1 | C60 | |
| 2020.12.22 | Hajek,Oskar (2165) vs (2423) Weetik,V Titled Tuesday 22nd Dec Caro-Kann - Two Knights | 0-1 | B11 | |
| 2016.10.15 | Hajek, Ji3 (1989) vs (1808) Timr, Jan 8th Pilsen Open 2016 Three Knights | 1-0 | C46 | |
| 2016.10.13 | Hodan, Jiri (1808) vs (1989) Hajek, Ji3 8th Pilsen Open 2016 Caro-Kann | 1-0 | B12 | |
| 2016.10.12 | Hajek, Ji3 (1989) vs (1791) Kallstrom, Michael 8th Pilsen Open 2016 Sicilian Moscow | 0-1 | B51 | |
| 2016.10.11 | Docekal, J. (2294) vs (1989) Hajek, Ji3 8th Pilsen Open 2016 Scandinavian | 1-0 | B01 | |
| 2016.10.09 | Feldvabl, Vilem (1671) vs (1989) Hajek, Ji3 8th Pilsen Open 2016 Indian East Indian - London | 0-1 | A48 | |
| 2020.08.29 | Hajek, Jindrich vs (1585) Kotesovec, Jaroslav Calliditas Open 2020 Evans Gambit - Cordel | 1/2-1/2 | C51 |