Stadium: Court 1 Round: 25 Ground: Hardcourt outdoor
| 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 St Brieuc Qual | 2018/03/24 15:10 | Grigelis, Laurynas v Lescure, Mick | 6-7,6-2,6-0 |
| Challenger - Lille | 2018/03/22 18:45 | Grigelis, Laurynas v Antoine Hoang | 4-6,6-2,4-6 |
| Challenger - Lille | 2018/03/20 11:50 | Grigelis, Laurynas v Lorenzo Giustino | 6-4,7-6 |
| ITF Japan F3 | 2018/03/23 02:00 | Tatsuma Ito v Hong, Seong Chan | 5-7,6-2,2-6 |
| ITF Japan F3 | 2018/03/22 06:55 | Tatsuma Ito v Ryota Tanuma | 6-7,6-2,6-1 |
| ITF Japan F3 | 2018/03/22 03:00 | Tatsuma Ito v Masamichi Imamura | 6-2,6-0 |
| ITF Japan F3 | 2018/03/20 06:00 | Tatsuma Ito v Naoki Nakagawa | 6-2,6-3 |
| Challenger - Shenzhen | 2018/03/17 03:00 | Tatsuma Ito v Ilya Ivashka | 3-6,2-6 |
| Challenger - Shenzhen | 2018/03/16 05:05 | Zopp, Jurgen v Tatsuma Ito | 3-6,4-6 |
| Challenger - Shenzhen | 2018/03/15 09:35 | Tatsuma Ito v Ignatik, Uladzimir | 1-6,6-3,6-4 |
| Challenger - Shenzhen | 2018/03/13 07:20 | Wu, Di v Tatsuma Ito | 6-7,7-5,5-7 |