Stadium: Court 4 Round: 25 Ground: Clay
| 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 Constanta | 2023/06/01 08:00 | Radu Mihai Papoe v Olaf Pieczkowski | 6-1,6-4 |
| ITF - M15 Constanta | 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 Monastir | 2023/03/18 10:15 | Roncalli, Simone v Olaf Pieczkowski | 2-6,2-6 |
| Challenger - Savannah | 2023/04/24 19:30 | Dougaz, Aziz v Kodat, Toby Alex | 6-2,6-3 |
| Challenger - Sarasota | 2023/04/13 14:15 | Kodat, Toby Alex v Tomas Machac | 4-6,6-1,1-6 |
| Challenger - Sarasota | 2023/04/11 16:05 | Kodat, Toby Alex v Rio Noguchi | 6-3,1-6,7-5 |
| ITF - M25 Calabasas | 2023/03/25 20:00 | Kodat, Toby Alex v Nathan Ponwith | 2-6,0-6 |
| ITF - M25 Calabasas | 2023/03/25 02:15 | Aidan Mayo v Kodat, Toby Alex | 2-6,4-6 |
| ITF - M25 Calabasas | 2023/03/24 00:30 | Kodat, Toby Alex v Alex Bolt | 6-1,7-5 |
| ITF - M25 Calabasas | 2023/03/23 21:10 | Kodat, Toby Alex v Maciej Rajski | 6-1,6-4 |
| ITF M25 Montreal | 2023/03/14 18:10 | Gabriel Diallo v Kodat, Toby Alex | 6-1,6-7,7-6 |