Stadium: Court 1 Round: 64 Ground: Clay
| Challenger Ismaning | 2019/10/18 14:15 | Teymuraz Gabashvili v Lukas Lacko | 7-5,4-6,4-6 |
| Challenger Ostrava | 2020/09/04 11:45 | Botic Van De Zandschulp v Lukas Lacko | 5-7,6-3,6-1 |
| Challenger Ostrava | 2020/09/03 08:00 | Lukas Lacko v Frederico Ferreira Silva | 6-4,7-5 |
| Challenger Ostrava | 2020/08/31 08:00 | Lukas Lacko v Filip Horansky | 7-6,6-2 |
| Challenger Trieste | 2020/08/24 08:00 | Juan Pablo Ficovich v Lukas Lacko | 7-5,7-5 |
| Challenger Pau | 2020/02/27 11:00 | Lukas Lacko v Quentin Halys | 6-7,2-6 |
| Challenger Pau | 2020/02/25 18:15 | Lukas Lacko v Mukund Sasikumar | 6-4,7-6 |
| ATP Marseille | 2020/02/16 10:00 | Lukas Lacko v Emil Ruusuvuori | 4-6,4-6 |
| ATP Montpellier | 2020/02/02 15:00 | Elliot Benchetrit v Lukas Lacko | 6-3,6-3 |
| Challenger Ostrava | 2020/08/29 11:15 | Teymuraz Gabashvili v Marc-Andrea Huesler | 6-7,6-7 |
| Challenger Prague 2 | 2020/08/23 08:30 | Marek Gengel v Teymuraz Gabashvili | 6-2,7-6 |
| Challenger Pau | 2020/02/29 13:00 | Teymuraz Gabashvili v Ernests Gulbis | 3-6,7-6,1-6 |
| Challenger Pau | 2020/02/28 13:00 | Teymuraz Gabashvili v Benjamin Bonzi | 6-4,2-6,7-6 |
| Challenger Pau | 2020/02/27 10:30 | Teymuraz Gabashvili v Illya Marchenko | 6-4,5-7,7-5 |
| Challenger Pau | 2020/02/25 09:00 | Sergiy Stakhovsky v Teymuraz Gabashvili | 6-7,2-6 |
| Challenger Pau | 2020/02/24 10:30 | Lucas Miedler v Teymuraz Gabashvili | 4-6,6-7 |
| Challenger Koblenz | 2020/02/18 17:05 | Teymuraz Gabashvili v Tomas Machac | 0-6,3-6 |