| Nov 7, 2025 | Campora | 0–1 | Tomaszewski | III Torneio Int. Lagos | Sicilian Defense: Richter-Rauzer Variation, Dragon Variation | |
| Nov 6, 2025 | Tomaszewski | 1–0 | Kraczek | III Torneio Int. Lagos | English Opening: King's English Variation, Four Knights Variation, Flexible Line | |
| Nov 5, 2025 | Briem | 1–0 | Tomaszewski | III Torneio Int. Lagos | East Indian Defense | |
| Nov 3, 2025 | Decker | 0–1 | Tomaszewski | III Torneio Int. Lagos | Sicilian Defense: Alapin Variation, Barmen Defense | |
| Nov 2, 2025 | Tomaszewski | 1–0 | Krasiewicz | III Torneio Int. Lagos | Semi-Slav Defense | |
| Nov 2, 2025 | Modzelewski | 0–1 | Tomaszewski | III Torneio Int. Lagos | Rapport-Jobava System | |
| Nov 1, 2025 | Tomaszewski | 1–0 | Gomez Cerezo | III Torneio Int. Lagos | King's Indian Defense: Orthodox Variation, Aronin-Taimanov Defense | |
| Oct 27, 2025 | Tomaszewski | 0–1 | Stefansson | III Torneio Int. Lagos | English Opening: Anglo-Indian Defense, King's Indian Formation, Double Fianchetto | |
| Oct 27, 2025 | Tomaszewski | ½–½ | Harikrishnan.A.Ra | III Torneio Int. Lagos | English Opening | |
| Apr 21, 2025 | Tomaszewski | 0–1 | Shevkunov | Freestyle Chess Open A | ? | |
| Apr 20, 2025 | Tomaszewski | ½–½ | Kremser | Freestyle Chess Open A | ? | |
| Apr 20, 2025 | Paeslack | ½–½ | Tomaszewski | Freestyle Chess Open A | ? | |
| Apr 19, 2025 | Tomaszewski | 0–1 | Huschenbeth | Freestyle Chess Open A | ? | |
| Apr 18, 2025 | Tomaszewski | 0–1 | Karthikeyan | Round 2: Tomaszewski, Kacper - Karthikeyan, Murali | ? | |
| Feb 23, 2025 | Tomaszewski | 1–0 | Khoury | Round 9: Tomaszewski, Kacper - Khoury, Theo | Queen's Gambit Declined | |
| Feb 22, 2025 | Tomaszewski | 1–0 | Zhang | Round 7: Tomaszewski, Kacper - Zhang, Junyi | English Opening: Agincourt Defense, Catalan Defense Accepted | |
| Feb 22, 2025 | Czopor | 1–0 | Tomaszewski | Round 8: Czopor, Maciej - Tomaszewski, Kacper | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Feb 21, 2025 | Willow | ½–½ | Tomaszewski | Round 6: Willow, Jonah B - Tomaszewski, Kacper | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Feb 20, 2025 | Tomaszewski | 1–0 | Wilks | Round 5: Tomaszewski, Kacper - Wilks, Simon | Nimzo-Indian Defense | |
| Feb 20, 2025 | Sanitt | 0–1 | Tomaszewski | Round 4: Sanitt, Ethan - Tomaszewski, Kacper | English Opening | |
| Feb 19, 2025 | Tomaszewski | 1–0 | Westcott | Round 3: Tomaszewski, Kacper - Westcott, Dale | Semi-Slav Defense | |
| Feb 18, 2025 | Tomaszewski | ½–½ | Brackmann | Round 1: Tomaszewski, Kacper - Brackmann, Hendrik | Queen's Gambit Accepted: Normal Variation, Traditional System | |
| Feb 18, 2025 | Fellowes | 1–0 | Tomaszewski | Round 2: Fellowes, Billy - Tomaszewski, Kacper | King's Indian Attack: Wahls Defense | |
| Nov 1, 2024 | Tomaszewski | 1–0 | Campora | Round 8: Tomaszewski, Kacper - Campora, Daniel H. | Scotch Game | |
| May 30, 2024 | Urkedal | 1–0 | Tomaszewski | Norway Chess Open 2024 | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| May 29, 2024 | Tomaszewski | 1–0 | Shehzad | Norway Chess Open 2024 | Semi-Slav Defense: Chigorin Defense | |
| May 28, 2024 | Dammann | 0–1 | Tomaszewski | Norway Chess Open 2024 | Sicilian Defense: Open | |
| May 27, 2024 | Tomaszewski | ½–½ | Uritsky | Norway Chess Open 2024 | French Defense: Advance Variation, Euwe Variation | |
| May 26, 2024 | Johansson | ½–½ | Tomaszewski | Norway Chess Open 2024 | Slav Defense: Winawer Countergambit | |
| May 26, 2024 | Tomaszewski | 1–0 | Klings | Norway Chess Open 2024 | Nimzo-Indian Defense: Three Knights Variation | |
| May 25, 2024 | Aksel Bu Kvaløy | 1–0 | Tomaszewski | Norway Chess Open 2024 | Ruy Lopez: Cozio Defense | |
| May 25, 2024 | Tomaszewski | ½–½ | Blomqvist | Round 2: Tomaszewski, Kacper - Blomqvist, Erik | Slav Defense: Exchange Variation | |
| May 24, 2024 | Darko Mesar | 0–1 | Tomaszewski | Round 1: Darko Mesar - Tomaszewski, Kacper | Benko Gambit | |
| Mar 6, 2024 | Tomaszewski | 0–1 | Tarhan | Round 7: Tomaszewski, Kacper - Tarhan, Adar | Queen's Gambit Declined: Ragozin Defense, Alekhine Variation | |
| Mar 3, 2024 | Can | 1–0 | Tomaszewski | Round 2: Can, Emre - Tomaszewski, Kacper | Sicilian Defense: Moscow Variation | |
| Nov 2, 2024 | Cernov | ½–½ | Tomaszewski | Round 9: Cernov, Vadim - Tomaszewski, Kacper | Sicilian Defense: Lasker-Dunne Attack | |
| Oct 31, 2024 | Nagare Akhilesh | 0–1 | Tomaszewski | Round 7: Nagare Akhilesh - Tomaszewski, Kacper | Sicilian Defense: Dragon Variation, Classical Variation, Tartakower Line | |
| Oct 30, 2024 | Tomaszewski | 1–0 | Silva | Round 6: Tomaszewski, Kacper - Silva, Lourenco Santa Clara | Torre Attack: Classical Defense | |
| Oct 28, 2024 | Tomaszewski | 0–1 | Navarro Martinez | Round 4: Tomaszewski, Kacper - Navarro Martinez, Victor | Queen's Gambit Declined: Neo-Orthodox Variation, Main Line | |
| Oct 27, 2024 | Tomaszewski | 1–0 | De Oliveira | Round 2: Tomaszewski, Kacper - De Oliveira, Jairo Quintiliano | Caro-Kann Defense: Panov Attack | |
| Oct 27, 2024 | Margarido | ½–½ | Tomaszewski | Round 3: Margarido, Jose Miguel Teixeira - Tomaszewski, Kacper | English Opening: Great Snake Variation | |
| Oct 26, 2024 | Gamboa | 0–1 | Tomaszewski | Round 1: Gamboa, Quevin Milhano - Tomaszewski, Kacper | English Opening: Great Snake Variation | |
| May 4, 2024 | Tomaszewski | ½–½ | Pacher | Extraliga 10.kolo | Nimzo-Indian Defense: Classical Variation | |
| May 4, 2024 | Karas | ½–½ | Tomaszewski | Extraliga 11.kolo | English Opening: Anglo-Indian Defense, King's Knight Variation | |
| Dec 10, 2023 | Tomaszewski | 1–0 | Nadzamova | SVK ECo-C Extraliga 2023/2024 | English Opening: King's English Variation, Two Knights Variation | |
| Dec 9, 2023 | Urhegyi | ½–½ | Tomaszewski | SVK ECo-C Extraliga 2023/2024 | Sicilian Defense: Richter-Rauzer Variation, Dragon Variation | |
| Nov 4, 2023 | Bernadskiy | 1–0 | Tomaszewski | Lagos 2023 | Indian Defense: Anti-Nimzo-Indian | |
| Nov 3, 2023 | Spraggett | 0–1 | Tomaszewski | Lagos 2023 | Modern Defense: Lizard Defense, Mittenberger Gambit | |
| Nov 2, 2023 | Tomaszewski | 1–0 | Andias | Lagos 2023 | Zukertort Opening: Kingside Fianchetto | |
| Oct 30, 2023 | Heinzel | 1–0 | Tomaszewski | Lagos 2023 | Caro-Kann Defense: Exchange Variation, Rubinstein Variation | |
| Oct 29, 2023 | Tomaszewski | ½–½ | Safarli | Lagos 2023 | Sicilian Defense: Moscow Variation, Main Line | |
| Oct 20, 2023 | Tomaszewski | 1–0 | Dragicevic | Qatar Masters | Semi-Slav Defense: Stoltz Variation | |
| Oct 19, 2023 | Tomaszewski | 1–0 | Rohith Krishna S | Qatar Masters | King's Pawn Game | |
| Oct 18, 2023 | Hari Madhavan N B | 1–0 | Tomaszewski | Qatar Masters | Sicilian Defense: Moscow Variation | |
| Oct 17, 2023 | Tomaszewski | 0–1 | Ostrovskiy | Qatar Masters | Nimzo-Indian Defense: Three Knights Variation | |
| Oct 15, 2023 | Song | * | Tomaszewski | Qatar Masters | Modern Defense | |
| Oct 14, 2023 | Abdurakhmonov | ½–½ | Tomaszewski | Qatar Masters | London System | |
| Oct 13, 2023 | Tomaszewski | ½–½ | Bai | Qatar Masters | Scotch Game: Schmidt Variation | |
| Oct 12, 2023 | Garv Gaur | ½–½ | Tomaszewski | Qatar Masters | Queen's Pawn Game: Modern Defense | |
| Oct 11, 2023 | Tomaszewski | 0–1 | Gagare | Qatar Masters | Nimzo-Indian Defense | |
| Oct 1, 2023 | Tomaszewski | 0–1 | Chojnacki | DMP - I Liga 2023 | Slav Defense: Three Knights Variation | |
| Sep 30, 2023 | Niedbala | 1–0 | Tomaszewski | DMP - I Liga 2023 | French Defense: Winawer Variation, Retreat Variation, Armenian Line | |
| Sep 29, 2023 | Tomaszewski | ½–½ | Lobejko | DMP - I Liga 2023 | Sicilian Defense: Prins Variation | |
| Sep 28, 2023 | Tomaszewski | ½–½ | Kasperek | DMP - I Liga 2023 | English Opening: Symmetrical Variation, Three Knights, Fianchetto Variation | |
| Sep 27, 2023 | Golenia | ½–½ | Tomaszewski | DMP - I Liga 2023 | Réti Opening: Anglo-Slav Variation, New York System | |
| Sep 25, 2023 | Rozycki | ½–½ | Tomaszewski | DMP - I Liga 2023 | Sicilian Defense: Richter-Rauzer Variation, Dragon Variation | |
| Sep 24, 2023 | Tomaszewski | ½–½ | Antoniewski | DMP - I Liga 2023 | Queen's Indian Defense: Miles Variation | |
| Sep 23, 2023 | Borgula | ½–½ | Tomaszewski | DMP - I Liga 2023 | Indian Defense: Normal Variation | |
| Jun 24, 2023 | Ionescu | ½–½ | Tomaszewski | FISCA GM | Pterodactyl Defense: Central, Anhanguera | |
| Jun 23, 2023 | Tomaszewski | ½–½ | Ghimpu | FISCA GM | Modern Defense: Standard Defense | |
| Jun 22, 2023 | Tudor | 0–1 | Tomaszewski | FISCA GM | Modern Defense: Beefeater Variation | |
| Jun 21, 2023 | Tomaszewski | ½–½ | Ben Ari | FISCA GM | English Opening: King's English Variation, Two Knights Variation | |
| Jun 20, 2023 | Bonte | 1–0 | Tomaszewski | FISCA GM | Queen's Gambit Declined: Semi-Tarrasch Defense, Kmoch Variation | |
| Jun 19, 2023 | Tomaszewski | 1–0 | Manolache | FISCA GM | Sicilian Defense: Delayed Alapin Variation, with e6 | |
| Jun 19, 2023 | Petkov | 1–0 | Tomaszewski | FISCA GM | Semi-Slav Defense: Accelerated Move Order | |
| Jun 18, 2023 | Tomaszewski | ½–½ | Molenda | FISCA GM | Four Knights Game: Scotch Variation Accepted | |
| Jun 17, 2023 | David | ½–½ | Tomaszewski | FISCA GM | Nimzo-Indian Defense: Rubinstein System | |
| Sep 12, 2021 | Tomaszewski | ½–½ | Kyc | Polish League Division 1 | Queen's Gambit Declined | |
| Sep 11, 2021 | Ciesla | ½–½ | Tomaszewski | Polish League Division 1 | Sicilian Defense: Taimanov Variation, Bastrikov Variation, English Attack | |
| Sep 10, 2021 | Tomaszewski | 1–0 | Lukasiewicz | Polish League Division 1 | Queen's Gambit Declined: Harrwitz Attack | |
| Sep 9, 2021 | Tomaszewski | ½–½ | Luch | Polish League Division 1 | Queen's Gambit Declined: Semi-Tarrasch Defense, Exchange Variation | |
| Sep 8, 2021 | Barski | 1–0 | Tomaszewski | Polish League Division 1 | Caro-Kann Defense: Advance Variation, Short Variation | |
| Sep 7, 2021 | Tomaszewski | ½–½ | Nurkiewicz | Polish League Division 1 | Benko Gambit Accepted: Fully Accepted Variation | |
| Sep 6, 2021 | Gbyl | ½–½ | Tomaszewski | Polish League Division 1 | Queen's Gambit Declined: Lasker Defense, Teichmann Variation | |
| Sep 5, 2021 | Tomaszewski | 1–0 | Smolka | Polish League Division 1 | Queen's Gambit Declined: Harrwitz Attack | |
| Sep 4, 2021 | Markiewicz | ½–½ | Tomaszewski | Polish League Division 1 | Caro-Kann Defense: Advance Variation, Tal Variation | |