Round: 25 Ground: Clay
| Challenger Milan | 2017/06/27 11:10 | Marco Cecchinato v Laurynas Grigelis | 5-7,7-5,7-6 |
| Challenger Todi | 2017/06/22 14:55 | Laurynas Grigelis v Liam Caruana | 5-7,3-6 |
| Challenger Lyon | 2017/06/14 16:00 | Laurynas Grigelis v Felix Auger Aliassime | 7-6,1-6,4-6 |
| Challenger Lyon | 2017/06/12 10:50 | Duckhee Lee v Laurynas Grigelis | 4-6,5-7 |
| Challenger Shymkent | 2017/05/23 07:10 | Evgeny Tyurnev v Laurynas Grigelis | 6-4,6-4 |
| Challenger Samarkand | 2017/05/16 08:15 | Egor Gerasimov v Laurynas Grigelis | 6-4,6-7,6-3 |
| ATP Istanbul Qual | 2017/04/30 09:00 | Laurynas Grigelis v Riccardo Bellotti | 2-6,1-6 |
| ATP Istanbul Qual | 2017/04/29 08:00 | Tobias Kamke v Laurynas Grigelis | 7-5,5-7,1-6 |
| ITF Poland F4 Qual | 2017/07/03 09:50 | Karol Drzewiecki v Martin Valdo Randpere | 6-1,6-1 |
| ITF Poland F4 Qual | 2017/07/02 08:00 | Karol Drzewiecki v Oleksander Kyrychenko | 7-6,6-4 |
| ITF Poland F4 Qual | 2017/07/01 11:00 | Karol Drzewiecki v Mateusz Piatek | 2-6,6-2,7-6 |
| ITF Poland F3 Qual | 2017/06/26 10:00 | Oleg Prihodko v Karol Drzewiecki | 6-3,4-6,6-1 |
| ITF Poland F1 | 2017/06/10 08:00 | Linus Frost v Karol Drzewiecki | 6-1,6-0 |
| ITF Czech Republic F3 Qual | 2017/05/27 10:00 | Ondrej Styler v Karol Drzewiecki | 6-1,6-4 |
| ITF Egypt F12 | 2017/04/02 08:00 | Karol Drzewiecki v Kacper Zuk | 6-7,6-3,2-6 |
| ITF Egypt F12 | 2017/04/01 08:00 | Karol Drzewiecki v Louis Lechevretel | 6-4,6-4 |