Stadium: C Round: 26 Ground: Clay
| Brescia, Italy | 2016/11/20 16:00 | Vanni, Luca v Grigelis, Laurynas | 6-7,6-4,7-6 |
| ITF Switzerland F1 | 2014/03/19 11:00 | Vanni, Luca v Grigelis, Laurynas | 6-7,2-6 |
| Challenger Mestre | 2018/05/23 08:30 | Yang, Tsung-Hua v Grigelis, Laurynas | 3-6,0-6 |
| Nanchang, China | 2018/04/16 03:00 | Yang, Tsung-Hua v Grigelis, Laurynas | 0-6,7-6,6-3 |
| Challenger - Taipei | 2018/04/11 03:00 | Grigelis, Laurynas v Tatsuma Ito | 7-6,4-6,3-6 |
| Coupe Davis | 2018/04/08 12:15 | Emil Ruusuvuori v Grigelis, Laurynas | 7-5,6-2 |
| Coupe Davis | 2018/04/07 13:00 | Heliovaara, Harri v Grigelis, Laurynas | 6-3,1-6,6-3 |
| Challenger St Brieuc | 2018/03/27 13:05 | Grigelis, Laurynas v Robert, Stephane | 4-6,6-7 |
| Challenger St Brieuc Qual | 2018/03/26 08:30 | Grigelis, Laurynas v Wang, Tak Khunn | 3-6,6-3,7-6 |
| Challenger St Brieuc Qual | 2018/03/25 11:45 | Grigelis, Laurynas v Kanar, Jonathan | 6-1,6-3 |
| Challenger Mestre | 2018/05/23 13:25 | Vanni, Luca v Viola, Matteo | 3-6,6-1,6-4 |
| Samarkand, Uzbekistan | 2018/05/19 07:00 | Vanni, Luca v Vilella Martinez, Mario | 6-4,6-4 |
| Samarkand, Uzbekistan | 2018/05/18 09:45 | Vanni, Luca v Ignatik, Uladzimir | 6-3,6-3 |
| Samarkand, Uzbekistan | 2018/05/18 06:00 | Vanni, Luca v Yang, Tsung-Hua | 6-2,6-4 |
| Samarkand, Uzbekistan | 2018/05/17 09:00 | Pedro Cachin v Vanni, Luca | 6-4,4-6,6-7 |
| Samarkand, Uzbekistan | 2018/05/17 05:40 | Vanni, Luca v Boluda-Purkiss, Carlos | 6-0,6-1 |
| Challenger - Glasgow | 2018/05/06 12:00 | Lacko, Lukas v Vanni, Luca | 4-6,7-6,6-4 |
| Challenger - Glasgow | 2018/05/05 11:50 | Viola, Matteo v Vanni, Luca | 2-6,2-6 |