Stadium: Court 6 Round: 25 Ground: Clay
| ITF M25 Bolton | 2019/04/03 13:20 | Zizou Bergs v Piotr Grynkowski | 6-4,6-2 |
| ITF M25 Bolton | 2019/04/01 15:40 | Scott Duncan v Piotr Grynkowski | 2-6,6-3,7-10 |
| 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 Turkey F41 | 2018/12/20 06:00 | Lorenzo Vatteroni v Sabit Suntic | 6-1,4-6,8-10 |
| ITF Turkey F41 | 2018/12/18 06:00 | Martins Rocens v Lorenzo Vatteroni | 6-3,6-7,5-10 |
| ITF Egypt F20 | 2018/09/22 08:30 | Lorenzo Vatteroni v Hassan Bassel | 6-1,6-2 |
| ITF Egypt F19 | 2018/09/17 09:00 | Stefano Battaglino v Lorenzo Vatteroni | 4-6,6-4,6-4 |
| ITF Egypt F19 | 2018/09/16 08:00 | Ansu Bhuyan v Lorenzo Vatteroni | 6-7,1-6 |
| ITF Egypt F19 | 2018/09/15 08:00 | Pietro Mugelli v Lorenzo Vatteroni | 2-6,2-6 |
| ITF Ukraine F4 | 2018/08/28 07:00 | Lorenzo Vatteroni v Artem Smirnov | 2-6,4-6 |
| ITF Ukraine F4 | 2018/08/27 07:00 | Sagadat Ayap v Lorenzo Vatteroni | 6-0,4-6,6-7 |