Stadium: Court 8 Round: 54 Ground: Clay
| Bolton, Qualifications Simples M-ITF-GBR-03A | 2019/04/03 13:20 | Zizou Bergs v Piotr Grynkowski | 6-4,6-2 |
| Bolton, Qualifications Simples M-ITF-GBR-03A | 2019/04/01 15:40 | Scott Duncan v Piotr Grynkowski | 2-6,6-3,7-10 |
| Bolton, Qualifications Simples M-ITF-GBR-03A | 2019/04/01 09:30 | Lazdins, Arturs v Piotr Grynkowski | 4-6,4-6 |
| ITF - M15 Sharm El Sheikh | 2019/03/04 08:00 | Piotr Grynkowski v Thirouin, Jean | 6-3,0-6,5-10 |
| ITF - M15 Sharm El Sheikh | 2019/02/28 11:25 | Piotr Grynkowski v Moundir, Adam | 3-6,6-3,5-7 |
| ITF - M15 Sharm El Sheikh | 2019/02/26 08:00 | Velotti, Agustin 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 |
| Czech Republic F11, Singles Qualifying | 2018/11/19 14:00 | Piotr Grynkowski v Aichhorn, Jakob | 2-6,5-7 |
| ITF - M15 Antalya | 2019/05/06 07:00 | Bilgin, Burak v Kunz, Giordan | 2-6,6-7 |
| ITF - M15 Antalya | 2019/04/30 07:15 | Max Houkes v Kunz, Giordan | 6-0,6-2 |
| ITF - M15 Antalya | 2019/04/29 06:45 | Egor Matvievici v Kunz, Giordan | 7-5,2-6,6-10 |
| ITF - M15 Sharm El Sheikh | 2019/02/18 07:30 | Kunz, Giordan v Botezan, George | 3-6,3-6 |
| ITF - M15 Sharm El Sheikh | 2019/02/11 09:00 | Prechtel, Sebastian v Kunz, Giordan | 6-3,6-3 |
| ITF M25 Oberentfelden | 2019/02/04 08:30 | Martinez, Mirko v Kunz, Giordan | 6-4,6-1 |
| ITF Egypt F29 | 2018/11/26 08:00 | Alex M Pujolras v Kunz, Giordan | 7-5,6-1 |
| ITF Egypt F29 | 2018/11/25 10:30 | Zaghloul, Aly v Kunz, Giordan | 2-6,1-6 |