Stadium: Court 1 Round: 25 Ground: Clay
| ITF M15 Lodz | 2021/08/19 10:30 | Daniel Michalski v Szymon Kielan | 3-6,7-5,6-3 |
| ITF M15 Vaasa | 2024/08/08 10:00 | Szymon Kielan v Christopher Bulus | 6-3,3-6,2-6 |
| ITF M15 Vaasa | 2024/08/07 16:25 | Jesse De Jager v Szymon Kielan | 7-6,4-6,4-6 |
| ITF M15 Lodz | 2024/07/10 08:00 | Szymon Kielan v Felix Einig | 7-6,3-6,3-6 |
| ITF M15 Koszalin | 2024/06/19 12:10 | Szymon Kielan v John H Lithen | 6-3,3-6,2-6 |
| ITF M15 Koszalin | 2024/06/12 13:40 | Szymon Kielan v Manas Manoj Dhamne | 2-6,3-6 |
| ITF M15 Grodzisk Mazowiecki | 2024/06/07 09:00 | Vladyslav Orlov v Szymon Kielan | 7-6,6-0 |
| ITF M15 Grodzisk Mazowiecki | 2024/06/06 09:50 | Szymon Kielan v Daniel Paty | 7-6,2-6,6-4 |
| ITF M15 Grodzisk Mazowiecki | 2024/06/05 09:50 | Szymon Kielan v Jakub Krawczyk | 6-3,6-3 |
| Challenger Bonn | 2024/08/05 11:50 | Juan Bautista Torres v Daniel Michalski | 6-1,6-2 |
| Challenger Bonn | 2024/08/04 14:35 | Patrick Zahraj v Daniel Michalski | 1-6,4-6 |
| ITF M25 Wetzlar | 2024/08/02 13:15 | Max Houkes v Daniel Michalski | 7-5,6-3 |
| ITF M25 Wetzlar | 2024/08/01 09:00 | Fons Van Sambeek v Daniel Michalski | 6-2,3-6,1-6 |
| ITF M25 Wetzlar | 2024/07/31 08:50 | Liam Gavrielides v Daniel Michalski | 6-7,1-6 |
| ITF M25 Kassel | 2024/07/12 16:10 | Raphael Collignon v Daniel Michalski | 6-1,6-3 |
| ITF M25 Kassel | 2024/07/11 09:25 | Michel Hopp v Daniel Michalski | 5-7,1-6 |
| ITF M25 Kassel | 2024/07/09 12:55 | David Fix v Daniel Michalski | 6-3,2-6,2-6 |