Stadium: Center Court Round: 64 Ground: Hardcourt indoor
| Open d'Australie | 2019/01/08 06:30 | Lacko, Lukas v Smyczek, Tim | 4-6,6-4,6-7 |
| Challenger - Bratislava | 2018/11/08 16:00 | Lacko, Lukas v Egor Gerasimov | 3-6,3-6 |
| Challenger - Bratislava | 2018/11/07 15:30 | Lacko, Lukas v Robert, Stephane | 4-6,6-4,7-5 |
| Challenger Eckental | 2018/10/31 16:00 | Lacko, Lukas v Bolelli, Simone | 6-7,3-6 |
| ATP Stockholm | 2018/10/18 12:30 | Lacko, Lukas v Fabio Fognini | 4-6,4-6 |
| ATP Stockholm | 2018/10/16 13:45 | Lacko, Lukas v Taro Daniel | 6-1,6-4 |
| Challenger Ortisei | 2018/10/09 14:25 | Pavic, Ante v Lacko, Lukas | 7-6,7-6 |
| St. Petersburg, Russia | 2018/09/20 13:20 | Marco Cecchinato v Lacko, Lukas | 7-5,7-6 |
| ITF Qatar F6 | 2018/12/20 13:35 | Alexandar Lazarov v Aslan Karatsev | 3-6,6-7 |
| ITF Qatar F6 | 2018/12/19 14:40 | Lescure, Mick v Alexandar Lazarov | 2-6,6-7 |
| ITF Qatar F6 | 2018/12/18 08:20 | Alexandar Lazarov v Guy Den Heijer | 7-6,7-6 |
| Qatar F5, Simples | 2018/12/14 12:00 | Alexandar Lazarov v Wang, Tak Khunn | 1-6,0-6 |
| Qatar F5, Simples | 2018/12/13 13:50 | Alexandar Lazarov v Aslan Karatsev | 7-5,5-7,6-3 |
| Qatar F5, Simples | 2018/12/12 13:25 | Lozan, Kristian v Alexandar Lazarov | 3-6,6-3,0-6 |
| Qatar F5, Simples | 2018/12/11 13:10 | Ali Mutawa, Jabor Mohammed v Alexandar Lazarov | 3-6,1-6 |
| ITF Qatar F4 | 2018/12/05 14:25 | Zizou Bergs v Alexandar Lazarov | 6-4,6-1 |