Stadium: Court 4 Round: 25 Ground: Clay
| ITF M15 Valldoreix | 2021/05/09 12:00 | Rishab Agarwal v Sandro Szic | 6-2,6-0 |
| ITF M25 Poznan | 2020/08/24 08:00 | Maciej Rajski v Sandro Szic | 6-2,6-2 |
| ITF M25 Poznan | 2020/08/23 08:00 | Alan Bojarski v Sandro Szic | 6-2,5-7,1-10 |
| ITF M15 Olomouc | 2019/10/16 11:25 | Jaroslav Pospisil v Sandro Szic | 6-2,6-3 |
| ITF M15 Koszalin | 2019/08/06 14:00 | Mateusz Terczynski v Sandro Szic | 6-0,6-1 |
| ITF M15 Wroclaw | 2019/07/01 08:00 | Sandro Szic v Tomas Liska | 6-2,2-6,9-11 |
| Challenger Almaty Qual | 2021/06/13 07:40 | Jesper De Jong v Daniel Michalski | 6-2,6-1 |
| Challenger Almaty | 2021/06/06 04:00 | Daniel Michalski v Corentin Denolly | 6-3,6-7,2-6 |
| ITF M25 Most | 2021/05/28 08:30 | Daniel Michalski v Alex Rybakov | 4-6,4-6 |
| ITF M25 Most | 2021/05/27 10:45 | Ergi Kirkin v Daniel Michalski | 4-6,0-6 |
| ITF M25 Most | 2021/05/26 11:10 | Petr Cervinka v Daniel Michalski | 1-6,1-6 |
| ITF M15 Antalya | 2021/05/14 07:00 | Orlando Luz v Daniel Michalski | 6-3,6-4 |
| ITF M15 Antalya | 2021/05/13 09:35 | Dragos Nicolae Madaras v Daniel Michalski | 7-5,5-7,2-6 |
| ITF M15 Antalya | 2021/05/12 11:30 | Pierre Yves Bailly v Daniel Michalski | 6-1,2-6,3-6 |