 Slovakia: M25 Trnava - Doubles - Main |
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| Quarter-finals | Oberleitner N./Paul J. | Kielan S./Pieczkowski O. | 2:0 (6:3, 6:2) | details | 28.03.2024 |
| 1/8-finals | Kielan S./Pieczkowski O. | Jakubovic X./Medved J. | 2:1 (6:4, 3:6, 10:8) | details | 26.03.2024 |
 Egypt: M15 Sharm ElSheikh 7 - Doubles - Main |
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| Final | Kielan S./Sheehy J. | Elsayed A./van Wyk K. | 2:0 (7:5, 6:4) | details | 16.03.2024 |
| Semi-finals | Kielan S./Sheehy J. | Beloborodko I./Dzhavakian Y. | 2:1 (4:6, 6:2, 10:7) | details | 15.03.2024 |
| Quarter-finals | Kielan S./Sheehy J. | Li W./Lu P. | 2:0 (7:5, 7:64) | details | 14.03.2024 |
| 1/8-finals | Kielan S./Sheehy J. | Coccioli A./Lorusso L. | 2:0 (6:4, 6:3) | details | 12.03.2024 |
| Egypt: M15 Sharm ElSheikh 6 - Doubles - Main |
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| Final | Kielan S./Uzhylovskyi V. | Bar Biryukov P./Elsayed A. | 0:2 (3:6, 4:6) | details | 09.03.2024 |
| Semi-finals | Kielan S./Uzhylovskyi V. | Poritskyy A./Ursu V. | 2:0 (6:4, 6:2) | details | 08.03.2024 |
| Quarter-finals | Kielan S./Uzhylovskyi V. | Lu P./Zheng B. | 2:0 (7:610, 6:1) | details | 07.03.2024 |
| 1/8-finals | Kielan S./Uzhylovskyi V. | Gregoriou G./Lakshmanan A. | 2:0 (7:5, 6:3) | details | 05.03.2024 |
| Egypt: M15 Sharm ElSheikh 5 - Doubles - Main |
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| 1/8-finals | Kielan S./Uzhylovskyi V. | Maamoun K.M./Zakaryia F. | 1:2 (67:7, 6:3, 7:10) | details | 27.02.2024 |
 Greece: M25 Heraklion - Doubles - Main |
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| 1/8-finals | Orlov V./Toman P. E. | Cretu C./Kielan S. | 2:0 (6:3, 6:3) | details | 01.11.2023 |
| Greece: M15 Heraklion 4 - Doubles - Main |
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| 1/8-finals | Kielan S./Ojakaar O. | Den Heijer G./Donders D. | CAN. | details | 24.10.2023 |
| Greece: M15 Heraklion 3 - Doubles - Main |
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| Semi-finals | Kielan S./Prihodko O. | Huber D./Kahoun J. | 1:2 (6:2, 3:6, 2:10) | details | 20.10.2023 |
| Quarter-finals | Kielan S./Prihodko O. | Donald M./Nicod J. | 2:0 (6:2, 6:3) | details | 19.10.2023 |
| 1/8-finals | Kielan S./Prihodko O. | Kusiewicz P./Siekanowicz P. | 2:0 (6:4, 7:5) | details | 18.10.2023 |
 Sweden: M15 Danderyd - Doubles - Main |
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| Quarter-finals | Karol M./Kielan S. | Oetzbach A./Rosenkranz M. | 0:2 (3:6, 61:7) | details | 21.09.2023 |
| 1/8-finals | Karol M./Kielan S. | Haupt H./Ponomar O. | 2:0 (6:1, 7:5) | details | 20.09.2023 |
 Poland: Szczecin - Doubles - Main |
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| 1/8-finals | Choinski J./Kielan S. | Kolar Z./Martos Gornes S. | 0:2 (64:7, 4:6) | details | 12.09.2023 |
| Poland: M15 Koszalin - Doubles - Main |
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| 1/8-finals | Kielan S./Kosinski F. | Hartenstein J. P./Pavlenko P. | 0:2 (3:6, 3:6) | details | 05.09.2023 |
| Poland: M15 Szczawno - Doubles - Main |
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| 1/8-finals | Kremenchutskyi I./Vaise T. | Kielan S./Kosinski F. | 2:1 (6:3, 3:6, 10:5) | details | 29.08.2023 |
 Czech Republic: Prague 3 - Doubles - Main |
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| Quarter-finals | Kielan S./Kivattsev K. | Molleker R./Squire H. | 1:2 (4:6, 6:3, 9:11) | details | 24.08.2023 |
| 1/8-finals | Kaliyanda Poonacha N./Taylor A. | Kielan S./Kivattsev K. | 0:2 (3:6, 4:6) | details | 22.08.2023 |
| Poland: Grodzisk Mazowiecki - Doubles - Main |
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| 1/8-finals | Kasnikowski M./Kielan S. | Sharan D./Zelenay I. | 0:2 (5:7, 3:6) | details | 16.08.2023 |
| Poland: M25 Lodz - Doubles - Main |
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| Final | Karol M./Kielan S. | Cerny M./Paty D. | 0:2 (3:6, 3:6) | details | 12.08.2023 |
| Semi-finals | Karol M./Kielan S. | Pawlak P./Wojcik Y. | 2:1 (6:4, 3:6, 10:8) | details | 11.08.2023 |
| Quarter-finals | Karol M./Kielan S. | Dworak K./Majchrzak A. | 2:0 (6:4, 6:4) | details | 10.08.2023 |
| 1/8-finals | Karol M./Kielan S. | Ambarzumjan E./Schinas S. | 2:1 (4:6, 6:4, 11:9) | details | 08.08.2023 |
 Serbia: M15 Novi Sad 2 - Doubles - Main |
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| Semi-finals | Aboian L./Aboian V. | Bax F./Kielan S. | WO. | details | 04.08.2023 |
| Quarter-finals | Bax F./Kielan S. | Dica N. G./Smith M. | 2:0 (6:1, 7:64) | details | 03.08.2023 |