Stadium: CC Round: 54 Ground: Clay
| ITF Poland F4 Qual | 2017/07/02 13:00 | Martins Rocens v Piotr Grynkowski | 4-6,2-6 |
| ITF M15 Wroclaw | 2019/07/01 08:00 | Piotr Grynkowski v Daniil Tsebrenko | 6-1,7-5 |
| ITF M15 Netanya | 2019/06/19 09:20 | Piotr Grynkowski v Kento Yamada | 6-3,6-3 |
| ITF M25 Jablonec Nad Nisou | 2019/05/20 09:00 | Danylo Kalenichenko v Piotr Grynkowski | 6-1,6-0 |
| ITF M15 Antalya | 2019/05/10 09:35 | Piotr Grynkowski v Max Houkes | 2-6,1-6 |
| ITF M15 Antalya | 2019/05/09 09:05 | Piotr Grynkowski v Matthew Dellavedova | 6-2,6-3 |
| ITF M15 Antalya | 2019/05/08 10:00 | Paul Woerner v Piotr Grynkowski | 7-6,3-6,5-7 |
| ITF M15 Antalya | 2019/05/07 07:15 | Piotr Grynkowski v Giordan Kunz | 6-2,6-3 |
| ITF M25 Bolton | 2019/04/03 13:20 | Zizou Bergs v Piotr Grynkowski | 6-4,6-2 |
| ITF M15 Wroclaw | 2019/07/01 08:00 | Stephanos Schinas v Martins Rocens | 4-6,2-6 |
| ITF M15 Plovdiv | 2019/06/04 11:00 | Valentin Vanta v Martins Rocens | 4-6,6-0,10-7 |
| ITF M15 Plovdiv | 2019/06/03 10:00 | Radoslav Shandarov v Martins Rocens | 5-7,3-6 |
| ITF M25 Gyula | 2019/05/29 09:00 | Martins Rocens v Marek Semjan | 6-7,1-6 |
| ITF M25 Gyula | 2019/05/28 12:40 | Martins Rocens v Andras Necz | 6-4,6-4 |
| ITF M25 Gyula | 2019/05/27 12:30 | Martins Rocens v Peter Fajta | 7-6,6-3 |
| ITF M15 Kalmar | 2019/05/14 08:15 | Martins Rocens v Adrian Oetzbach | 7-6,2-6,1-10 |
| ITF M15 Kalmar | 2019/05/13 11:15 | Martins Rocens v Almir Nokic | 6-0,6-2 |