Stadium: Stadium Court Round: 25 Ground: Hardcourt outdoor
| Wimbledon, London, Great Britain | 2018/07/04 13:30 | Federer, Roger v Lacko, Lukas | 6-4,6-4,6-1 |
| Wimbledon, London, Great Britain | 2018/07/02 17:00 | Lacko, Lukas v Benjamin Bonzi | 4-6,6-3,7-6,6-4 |
| Eastbourne, Great Britain | 2018/06/30 14:00 | Lacko, Lukas v Zverev, Mischa | 4-6,4-6 |
| Eastbourne, Great Britain | 2018/06/29 14:50 | Lacko, Lukas v Marco Cecchinato | 6-3,6-4 |
| Eastbourne, Great Britain | 2018/06/28 10:00 | Lacko, Lukas v Cameron Norrie | 6-3,6-4 |
| Eastbourne, Great Britain | 2018/06/27 11:15 | Diego Schwartzman v Lacko, Lukas | 6-4,4-6,5-7 |
| Eastbourne, Great Britain | 2018/06/26 11:20 | Quiroz, Roberto v Lacko, Lukas | 4-6,6-7 |
| ATP Halle | 2018/06/18 12:45 | Lacko, Lukas v Denis Kudla | 4-6,4-6 |
| ATP Atlanta Qual | 2018/07/22 15:00 | Tommy Paul v Gunneswaran, Prajnesh | 3-6,3-6 |
| ATP Atlanta Qual | 2018/07/21 14:00 | Gunneswaran, Prajnesh v Mohamed Safwat | 0-6,6-3,6-1 |
| ATP Newport Qual | 2018/07/15 20:55 | Gunneswaran, Prajnesh v Bega, Alessandro | 4-6,7-5,4-6 |
| Wimbledon Qual | 2018/06/25 13:05 | Kamke, Tobias v Gunneswaran, Prajnesh | 6-1,6-4 |
| Challenger Ilkley Qual | 2018/06/17 10:00 | Gunneswaran, Prajnesh v Novikov, Dennis | 6-4,6-2 |
| Stuttgart, Germany | 2018/06/14 09:00 | Pella, Guido v Gunneswaran, Prajnesh | 7-6,6-3 |
| Stuttgart, Germany | 2018/06/13 09:00 | Gunneswaran, Prajnesh v Denis Shapovalov | 7-6,2-6,6-3 |
| ATP Stuttgart Qual | 2018/06/10 10:15 | Christian Harrison v Gunneswaran, Prajnesh | 3-6,6-4,3-6 |