 Turkey: M15 Antalya 21 - Doubles - Main |
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| Quarter-finals | Kobierski J./Valle F. | Popko D./Snitari I. | 0:2 (2:6, 2:6) | details | 21.12.2023 |
| 1/8-finals | Orazmuhammedov M./Rogusskiy Y. | Kobierski J./Valle F. | 0:2 (4:6, 1:6) | details | 19.12.2023 |
 Austria: M15 Bad Waltersdorf - Doubles - Main |
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| Semi-finals | Lemstra K./Pichler D. | Gaxherri S./Kobierski J. | 2:1 (63:7, 6:4, 10:4) | details | 06.10.2023 |
| Quarter-finals | Gaxherri S./Kobierski J. | Fuele M./Kisantal B. | 2:0 (6:4, 6:3) | details | 05.10.2023 |
| 1/8-finals | Hrazdil J./Safranek V. | Gaxherri S./Kobierski J. | WO. | details | 03.10.2023 |
| Austria: Bad Waltersdorf - Doubles - Main |
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| 1/8-finals | Bergevi F./Veldheer M. | Gaxherri S./Kobierski J. | 2:0 (6:4, 6:1) | details | 20.09.2023 |
| Austria: M15 Vienna - Doubles - Main |
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| 1/8-finals | Gaxherri S./Kobierski J. | De Rosa M./Ragazzi A. | 0:2 (65:7, 4:6) | details | 30.08.2023 |
| Austria: M15 Kottingbrunn - Doubles - Main |
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| Semi-finals | Karol M./Pichler D. | Gaxherri S./Kobierski J. | 2:0 (7:65, 6:3) | details | 18.08.2023 |
| Quarter-finals | Goldsteiner P./Prechtel S. | Gaxherri S./Kobierski J. | 0:2 (4:6, 3:6) | details | 17.08.2023 |
| 1/8-finals | Gaxherri S./Kobierski J. | Sharipov M./Yurkevich A. | 2:1 (65:7, 6:3, 10:5) | details | 15.08.2023 |
 Serbia: M15 Kursumlijska Banja 6 - Doubles - Main |
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| 1/8-finals | Barton H./Schoen P. | Bar Biryukov P./Kobierski J. | 2:0 (6:4, 6:4) | details | 20.06.2023 |
| Serbia: M25 Kursumlijska Banja 3 - Doubles - Main |
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| Quarter-finals | Uzhylovskyi V./Vincent Ruggeri S. | Bar Biryukov P./Kobierski J. | 2:0 (7:60, 6:2) | details | 08.06.2023 |
| 1/8-finals | Bar Biryukov P./Kobierski J. | Midon L./Romano G. | 2:0 (6:4, 7:63) | details | 08.06.2023 |
| 1/8-finals | Bar Biryukov P./Kobierski J. | Bobrov B./Fomin S. | CAN. | details | 07.06.2023 |
| Turkey: M15 Antalya 10 - Doubles - Main |
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| 1/8-finals | Dossetter C./Kobierski J. | Kawahashi Y./Kumasaka T. | 0:2 (2:6, 2:6) | details | 04.04.2023 |
| Turkey: M15 Antalya 5 - Doubles - Main |
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| 1/8-finals | Gaubas V./Kobierski J. | De Vincentis M./Reymond A. | 0:2 (3:6, 3:6) | details | 01.03.2023 |
| Turkey: M15 Antalya 3 - Doubles - Main |
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| Quarter-finals | Gospodjinacki R./Kobierski J. | Pavlenko P./Zielinski M. | 1:2 (0:6, 7:64, 6:10) | details | 26.01.2023 |
| 1/8-finals | Gospodjinacki R./Kobierski J. | Mora C. R./Oliver Moratalla V. | 2:0 (7:62, 6:3) | details | 24.01.2023 |
| Turkey: M15 Antalya 21 - Doubles - Main |
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| 1/8-finals | Kobierski J./Soyler B. | Akkoyun U./Aksu C. | 1:2 (7:5, 64:7, 4:10) | details | 23.11.2022 |
| Turkey: M25 Antalya 5 - Doubles - Main |
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| 1/8-finals | Ahouda W./Kobierski J. | Kiyamov T./Klok D. | 1:2 (6:4, 3:6, 11:13) | details | 08.11.2022 |
 Egypt: M15 Cairo 12 - Doubles - Main |
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| 1/8-finals | Kobierski J./Sorger S. | Borg L./Sinha N. K. | 0:2 (3:6, 5:7) | details | 30.08.2022 |
| Austria: M25 Telfs - Doubles - Main |
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| 1/8-finals | Kobierski J./Muller M. | Kivattsev K./Motti A. | 0:2 (1:6, 5:7) | details | 12.07.2022 |
 Finland: M15 Vaasa - Doubles - Main |
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| 1/8-finals | Atlangeriev B./Minin M. | Kobierski J./Kulakowski M. | 2:1 (3:6, 6:3, 10:8) | details | 31.05.2022 |
| Austria: M15 Warmbad Villach - Doubles - Main |
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| Quarter-finals | Homberg M./Kobierski J. | Kopp S./Lemstra K. | 0:2 (4:6, 3:6) | details | 19.05.2022 |
| 1/8-finals | Homberg M./Kobierski J. | Rohrer N./Waldner N. | 2:0 (6:1, 7:5) | details | 17.05.2022 |
 Australia: Australian Open - Doubles - Main |
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| 1/16-finals | Dietrich D./Kobierski J. | Barton H./Mensik J. | 1:2 (6:3, 3:6, 4:10) | details | 23.01.2022 |
