Stadium: Next Gen Round: 166 Ground: Clay
| Challenger Ludwigshafen | 2019/07/02 09:00 | Facundo Bagnis v Laurynas Grigelis | 6-4,6-1 |
| Challenger Milan | 2019/06/25 15:20 | Sumit Nagal v Laurynas Grigelis | 6-2,6-3 |
| Challenger Parma | 2019/06/18 09:55 | Andrea Collarini v Laurynas Grigelis | 6-3,6-3 |
| Challenger Barletta | 2019/04/08 14:00 | Laurynas Grigelis v Zdenek Kolar | 1-6,6-3,7-5 |
| Davis Cup | 2019/04/06 14:15 | Amine Ahouda v Laurynas Grigelis | 4-6,2-6 |
| Davis Cup | 2019/04/05 12:45 | Lamine Ouahab v Laurynas Grigelis | 6-2,6-0 |
| Challenger St Brieuc | 2019/03/25 11:20 | Laurynas Grigelis v Tomislav Brkic | 6-7,6-7 |
| Challenger Pau | 2019/02/27 14:05 | Sebastian Ofner v Laurynas Grigelis | 7-6,6-4 |
| Challenger Ludwigshafen | 2019/07/01 16:25 | Gian Marco Moroni v Guilherme Clezar | 6-3,3-6,7-5 |
| Challenger Milan | 2019/06/24 09:00 | Nino Serdarusic v Guilherme Clezar | 7-6,6-4 |
| Challenger Parma | 2019/06/19 08:00 | Guilherme Clezar v Andrea Pellegrino | 7-5,6-7,4-6 |
| ATP Lyon | 2019/05/18 10:00 | Guilherme Clezar v Maxime Janvier | 5-7,6-4,4-6 |
| Challenger Samarkand | 2019/05/14 11:30 | Aleksandar Vukic v Guilherme Clezar | 7-5,6-4 |
| Challenger Aix en Provence | 2019/05/06 10:00 | Guilherme Clezar v Rogerio Dutra Silva | 2-6,3-6 |
| Challenger Savannah | 2019/04/30 19:55 | Aleksandar Vukic v Guilherme Clezar | 7-6,6-7,6-3 |
| Challenger Tallahassee | 2019/04/24 14:00 | Guilherme Clezar v Sandro Ehrat | 7-6,5-7,2-6 |