Stadium: Center Court Round: 25 Ground: Carpet indoor
| Challenger Biella | 2020/09/29 08:00 | Lacko, Lukas v Horansky, Filip | 2-6,2-6 |
| Open de France | 2020/09/21 08:00 | Lacko, Lukas v Oscar Otte | 6-4,1-6,2-6 |
| Challenger - Ostrava | 2020/09/04 11:45 | Botic Van De Zandschulp v Lacko, Lukas | 5-7,6-3,6-1 |
| Challenger - Ostrava | 2020/09/03 08:00 | Lacko, Lukas v Frederico Ferreira Silva | 6-4,7-5 |
| Challenger - Ostrava | 2020/08/31 08:00 | Lacko, Lukas v Horansky, Filip | 7-6,6-2 |
| Challenger Trieste | 2020/08/24 08:00 | Juan Pablo Ficovich v Lacko, Lukas | 7-5,7-5 |
| Challenger - Pau | 2020/02/27 11:00 | Lacko, Lukas v Quentin Halys | 6-7,2-6 |
| Challenger - Pau | 2020/02/25 18:15 | Lacko, Lukas v Mukund Sasikumar | 6-4,7-6 |
| DTB German Pro Series | 2020/06/26 12:00 | Max Hans Rehberg v Haerteis, Johannes | 3-6,2-6 |
| DTB German Pro Series | 2020/06/25 12:00 | Stebe, Cedrik-Marcel v Max Hans Rehberg | 6-1,6-3 |
| DTB German Pro Series | 2020/06/24 14:10 | Haerteis, Johannes v Max Hans Rehberg | 3-6,2-6 |
| DTB German Pro Series | 2020/06/23 13:50 | Daniel Masur v Max Hans Rehberg | 6-2,7-6 |
| DTB German Pro Series | 2020/06/12 12:10 | Krawietz, Kevin v Max Hans Rehberg | 5-7,6-4,6-7 |
| DTB German Pro Series | 2020/06/11 09:30 | Max Hans Rehberg v Simon, Tobias | 3-6,7-6,6-3 |
| DTB German Pro Series | 2020/06/10 09:45 | Bachinger, Matthias v Max Hans Rehberg | 2-6,4-6 |
| DTB German Pro Series | 2020/06/09 14:55 | Yannick Hanfmann v Max Hans Rehberg | 6-2,6-0 |