Poland: M15 Koszalin 2 - Doubles - Main |
| Quarter-finals | Bladelius H./Karlsson Wistrand J. | Kielan S./Szajrych J. | 2:0 (6:2, 6:4) | details | 20.06.2024 |
| 1/8-finals | Berger A./Freire Da Silva A. | Kielan S./Szajrych J. | 1:2 (4:6, 6:3, 2:10) | details | 18.06.2024 |
Poland: M15 Koszalin - Doubles - Main |
| Semi-finals | Baum S./Paty D. | Kielan S./Pieczonka F. | 2:0 (6:4, 6:3) | details | 15.06.2024 |
| Quarter-finals | Kielan S./Pieczonka F. | De Jonge D./Hartenstein J. P. | 2:0 (6:2, 6:4) | details | 14.06.2024 |
| 1/8-finals | Kielan S./Pieczonka F. | Molder M./Rapagnetta D. | 2:0 (6:3, 6:1) | details | 14.06.2024 |
Poland: M15 Grodzisk Mazowiecki - Doubles - Main |
| 1/8-finals | Bojarski A./Grzegorzewski O. | Kielan S./Pieczonka F. | 2:1 (2:6, 6:4, 10:7) | details | 05.06.2024 |
Serbia: M15 Kursumlijska Banja 4 - Doubles - Main |
| Semi-finals | Saitoh K./Sumizawa D. | Kielan S./Markovski O. | 2:0 (6:2, 6:1) | details | 17.05.2024 |
| Quarter-finals | Kielan S./Markovski O. | Barreto Sanchez D. A./Blanch D. | 2:0 (6:2, 6:4) | details | 16.05.2024 |
| 1/8-finals | Kielan S./Markovski O. | Kirilov B./Tailleu P. A. | 2:0 (6:2, 6:4) | details | 14.05.2024 |
Slovakia: M25 Trnava - Doubles - Main |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 1/8-finals | Kielan S./Ojakaar O. | Den Heijer G./Donders D. | CAN. | details | 24.10.2023 |
Greece: M15 Heraklion 3 - Doubles - Main |
| 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 |
| 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 |
| 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 |
| 1/8-finals | Kielan S./Kosinski F. | Hartenstein J. P./Pavlenko P. | 0:2 (3:6, 3:6) | details | 05.09.2023 |