Stadium: Court 1 Round: 54 Ground: Hardcourt indoor
| ITF Turkey F35 | 2015/09/01 14:35 | Scott Duncan v Piotr Grynkowski | 0-6,3-6 |
| ITF M25 Bolton | 2019/04/01 09:10 | Isaac Stoute v Scott Duncan | 5-7,2-6 |
| ITF M25 Barnstaple | 2019/02/11 12:25 | Danylo Kalenichenko v Scott Duncan | 6-4,6-3 |
| ITF Tunisia F45 | 2018/12/17 09:00 | Scott Duncan v Vitalii Shcherba | 4-6,4-6 |
| ITF Tunisia F45 | 2018/12/16 08:00 | Scott Duncan v Wellington Bastos | 6-0,6-0 |
| ITF Great Britain F5 | 2018/09/17 09:30 | Jonathan Binding v Scott Duncan | 6-4,6-4 |
| ITF Great Britain F5 | 2018/09/16 09:30 | Brandon Murphy v Scott Duncan | 6-7,1-6 |
| ITF Great Britain F4 | 2018/09/12 12:10 | Scott Duncan v Ryan Peniston | 1-6,3-6 |
| ITF Great Britain F4 | 2018/09/11 11:00 | Scott Duncan v Jonathan Binding | 7-6,6-7,6-1 |
| ITF M25 Bolton | 2019/04/01 09:30 | Arturs Lazdins v Piotr Grynkowski | 4-6,4-6 |
| ITF M15 Sharm El Sheikh | 2019/03/04 08:00 | Piotr Grynkowski v Jean Thirouin | 6-3,0-6,5-10 |
| ITF M15 Sharm El Sheikh | 2019/02/28 11:25 | Piotr Grynkowski v Adam Moundir | 3-6,6-3,5-7 |
| ITF M15 Sharm El Sheikh | 2019/02/26 08:00 | Agustin Velotti v Piotr Grynkowski | 4-6,2-6 |
| ITF M15 Sharm El Sheikh | 2019/02/25 08:00 | Yvo Panak v Piotr Grynkowski | 7-6,4-6,5-10 |
| ITF Czech Republic F11 Qual | 2018/11/19 14:00 | Piotr Grynkowski v Jakob Aichhorn | 2-6,5-7 |
| ITF Czech Republic F10 | 2018/11/13 11:00 | Jakob Aichhorn v Piotr Grynkowski | 6-3,6-0 |
| ITF Czech Republic F10 | 2018/11/12 09:00 | Samuel Puskar v Piotr Grynkowski | 6-7,7-5,2-6 |