Stadium: Centre Court Round: 27 Ground: Hardcourt indoor
| Australian Open | 2018/01/18 00:00 | Nicolas Kicker v Lukas Lacko | 6-2,7-5,1-6,7-5 |
| Australian Open | 2018/01/16 00:00 | Lukas Lacko v Milos Raonic | 6-7,7-5,6-4,7-6 |
| ATP Auckland | 2018/01/10 01:00 | Robin Haase v Lukas Lacko | 7-6,6-3 |
| ATP Auckland | 2018/01/09 03:10 | Stefanos Tsitsipas v Lukas Lacko | 3-6,7-6,3-6 |
| ATP Auckland Qual | 2018/01/06 23:00 | Lukas Lacko v Rogerio Dutra Silva | 5-7,4-6 |
| ATP Auckland Qual | 2018/01/06 03:30 | Lukas Lacko v Rubin Statham | 6-1,7-5 |
| Challenger Brescia | 2017/11/19 15:20 | Laurynas Grigelis v Lukas Lacko | 1-6,2-6 |
| Challenger Brescia | 2017/11/18 15:10 | Lukas Lacko v Mirza Basic | 6-7,6-4,7-6 |
| Challenger Dallas Qual | 2018/01/29 18:15 | Evgeny Karlovskiy v Guillermo Olaso | 6-7,6-1,7-6 |
| Challenger Dallas Qual | 2018/01/28 16:00 | Guillermo Olaso v Patricio Heras | 6-0,6-4 |
| Challenger Dallas Qual | 2018/01/27 17:20 | Arnau Dachs v Guillermo Olaso | 3-6,4-6 |
| Challenger Newport Beach | 2018/01/23 21:25 | Taylor Fritz v Guillermo Olaso | 6-3,6-4 |
| Challenger Newport Beach Qual | 2018/01/22 18:00 | Guillermo Olaso v JC Aragone | 6-3,2-6,7-6 |
| Challenger Newport Beach Qual | 2018/01/21 20:25 | Brayden Schnur v Guillermo Olaso | 6-4,4-6,4-6 |
| Challenger Newport Beach Qual | 2018/01/20 22:05 | Ante Pavic v Guillermo Olaso | 3-6,3-6 |
| Challenger Bangkok | 2018/01/09 03:00 | Guillermo Olaso v Pedro Martinez | 4-6,4-6 |