Stadium: Court 3 Round: 27 Ground: Hardcourt outdoor
| ITF - Sharm El Sheikh M15 | 2022/02/21 10:30 | Olaf Pieczkowski v Coleman Wong | 2-6,2-6 |
| ITF - Doha M15 | 2023/10/05 12:30 | Coleman Wong v Abel Forger | 6-4,6-1 |
| ITF - Doha M15 | 2023/10/04 12:00 | Coleman Wong v Wishaya Trongcharoenchaikul | 7-6,6-4 |
| Puchar Davisa | 2023/09/17 05:30 | Coleman Wong v Robert Strombachs | 4-6,6-7 |
| Puchar Davisa | 2023/09/16 05:30 | Coleman Wong v Martins Rocens | 6-4,6-2 |
| ITF Hongkong - M25 | 2023/09/10 12:30 | Egor Gerasimov v Coleman Wong | 6-4,6-7,4-10 |
| ITF Hongkong - M25 | 2023/09/10 08:00 | Henrik Wiersholm v Coleman Wong | 3-6,7-5,10-12 |
| ITF Hongkong - M25 | 2023/09/09 10:00 | Kazuki Nishiwaki v Coleman Wong | 2-6,7-5,8-10 |
| ITF Hongkong - M25 | 2023/09/07 02:30 | Yeongseok Jeong v Coleman Wong | 6-2,3-6,2-6 |
| ITF - Doha M15 | 2023/10/05 14:20 | Zach Stephens v Olaf Pieczkowski | 3-6,3-6 |
| ITF - Doha M15 | 2023/10/04 18:10 | Grigoriy Lomakin v Olaf Pieczkowski | 3-6,4-6 |
| ITF - Falun M25 | 2023/09/26 12:00 | Olaf Pieczkowski v Anton Matusevich | 7-6,3-6,4-6 |
| Puchar Davisa | 2023/09/15 14:35 | Olaf Pieczkowski v Darian King | 1-6,7-6,6-3 |
| ITF - Szczawno M15 | 2023/09/03 09:30 | Olaf Pieczkowski v Jasza Szajrych | 6-1,6-2 |
| ITF - Szczawno M15 | 2023/09/01 09:00 | Olaf Pieczkowski v Jonas P Hartenstein | 6-2,6-2 |
| ITF - Szczawno M15 | 2023/08/30 07:00 | Olaf Pieczkowski v Alan Bojarski | 6-0,6-2 |
| ITF - Poznań M25 | 2023/08/23 13:45 | Olaf Pieczkowski v Viacheslav Bielinskyi | 6-3,3-6,2-6 |