Stadium: Center Court Round: 26 Ground: Carpet indoor
| ATP Atlanta | 2018/07/23 19:40 | Lukas Lacko v Prajnesh Gunneswaran | 6-2,6-2 |
| Challenger Ismaning | 2020/10/19 12:30 | Prajnesh Gunneswaran v Tomas Martin Etcheverry | 6-4,3-6,7-6 |
| Challenger Parma | 2020/10/05 10:40 | Prajnesh Gunneswaran v Paolo Lorenzi | 6-7,2-6 |
| Challenger Biella | 2020/09/28 10:00 | Maxime Cressy v Prajnesh Gunneswaran | 7-6,6-4 |
| French Open | 2020/09/23 12:55 | Aleksandar Vukic v Prajnesh Gunneswaran | 6-4,7-6 |
| French Open | 2020/09/21 10:10 | Cem Ilkel v Prajnesh Gunneswaran | 3-6,1-6 |
| ATP Kitzbuhel | 2020/09/08 10:00 | Marc-Andrea Huesler v Prajnesh Gunneswaran | 6-3,6-3 |
| ATP Kitzbuhel | 2020/09/07 12:50 | Sandro Kopp v Prajnesh Gunneswaran | 4-6,6-1,4-6 |
| Davis Cup | 2020/03/06 14:00 | Borna Gojo v Prajnesh Gunneswaran | 3-6,6-4,6-2 |
| Challenger Ismaning | 2020/10/20 14:00 | Lukas Lacko v Max Hans Rehberg | 5-7,7-6,6-1 |
| Challenger Biella | 2020/09/29 08:00 | Lukas Lacko v Filip Horansky | 2-6,2-6 |
| French Open | 2020/09/21 08:00 | Lukas Lacko v Oscar Otte | 6-4,1-6,2-6 |
| 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 |