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