Round: 26 Ground: Hardcourt outdoor
| ITF Poland F5 | 2017/07/12 11:45 | Grigelis, Laurynas v Velotti, Agustin | 7-6,6-3 |
| ITF Poland F4 | 2017/07/09 11:30 | Grigelis, Laurynas v Alexei Popyrin | 3-6,6-3,3-6 |
| ITF Poland F4 | 2017/07/08 11:35 | Grigelis, Laurynas v Billy Harris | 6-2,6-4 |
| ITF Poland F4 | 2017/07/07 11:05 | Grigelis, Laurynas v Bensoussan, Samuel | 6-2,6-1 |
| ITF Poland F4 | 2017/07/06 11:00 | Grigelis, Laurynas v Ewan Moore | 6-3,6-2 |
| ITF Poland F4 | 2017/07/04 10:30 | Grigelis, Laurynas v Drzewiecki, Karol | 6-2,6-1 |
| Milan, Italy | 2017/06/27 11:10 | Marco Cecchinato v Grigelis, Laurynas | 5-7,7-5,7-6 |
| Challenger Todi | 2017/06/22 14:55 | Grigelis, Laurynas v Caruana, Liam | 5-7,3-6 |
| ITF Poland F5 | 2017/07/12 10:30 | Cancel, Thibault v Walkow, Szymon | 2-6,7-6,6-1 |
| ITF Poland F5 Qual | 2017/07/10 09:20 | Oleg Prihodko v Cancel, Thibault | 4-6,7-6,6-7 |
| ITF Poland F5 Qual | 2017/07/08 07:00 | Rudowski, Adam v Cancel, Thibault | 1-6,0-6 |
| ITF Poland F4 | 2017/07/07 09:00 | Cancel, Thibault v Alexei Popyrin | 3-6,6-7 |
| ITF Poland F4 | 2017/07/05 15:30 | Maciej Rajski v Cancel, Thibault | 0-6,2-6 |
| ITF Poland F4 | 2017/07/04 17:05 | Gajewski, Kamil v Cancel, Thibault | 5-7,6-4,3-6 |
| ITF Poland F4 Qual | 2017/07/02 13:00 | Mularczyk, Konrad v Cancel, Thibault | 2-6,6-7 |
| ITF Poland F4 Qual | 2017/07/01 12:30 | Cancel, Thibault v Bosnjak, Mislav | 6-1,6-4 |