stadio: Court 13 Round: 25 Ground: Clay
| ITF M15 Bytom | 2022/06/07 11:30 | Filip Duda v Olaf Pieczkowski | 5-7,6-7 |
| ITF M25 Poprad | 2023/06/21 09:50 | Olaf Pieczkowski v Toby Alex Kodat | 0-6,1-6 |
| ITF M15 Litija | 2023/06/15 12:45 | Luca Wiedenmann v Olaf Pieczkowski | 6-3,6-0 |
| ITF M15 Litija | 2023/06/14 12:10 | Nikola Basic v Olaf Pieczkowski | 0-6,2-6 |
| ITF M15 Costanza | 2023/06/01 08:00 | Radu Mihai Papoe v Olaf Pieczkowski | 6-1,6-4 |
| ITF M15 Costanza | 2023/05/30 10:35 | Joao Victor C Loureiro v Olaf Pieczkowski | 4-6,6-1,4-6 |
| ITF M15 Pazardzhik | 2023/05/24 14:00 | Leonardo Rossi v Olaf Pieczkowski | 7-6,7-6 |
| ITF M15 Monastir | 2023/03/22 08:30 | Olaf Pieczkowski v Buvaysar Gadamauri | 2-6,6-3,2-6 |
| ITF M15 Monastir | 2023/03/19 08:30 | Olaf Pieczkowski v Lorenzo Rottoli | 6-7,3-6 |
| ITF M15 Wroclaw | 2023/06/26 11:00 | Filip Duda v Mariano Tammaro | 6-3,6-7,10-8 |
| ITF M25 Poprad | 2023/06/20 11:50 | Filip Duda v Sebastian Sec | 4-6,4-6 |
| ITF M15 Teheran | 2023/06/15 06:30 | Gabriele Pennaforti v Filip Duda | 6-1,7-5 |
| ITF M15 Teheran | 2023/06/14 11:05 | Yash Chaurasia v Filip Duda | 4-6,2-6 |
| ITF M25 Most | 2023/05/22 09:00 | Filip Duda v Robert Rumler | 2-6,3-6 |
| ITF M25 Praga | 2023/05/16 08:00 | Filip Duda v Jan Hrazdil | 6-4,6-7,9-11 |
| ITF M25 Praga | 2023/05/15 11:00 | Filip Duda v Julian Peter | 6-1,6-1 |
| ITF M15 Sharm El Sheikh | 2023/02/06 08:00 | Filip Duda v Maks Lukman | 5-7,7-6,14-16 |