Stadium: Centre Court Round: 24 Ground: Hardcourt indoor
| Challenger Eckental | 2019/11/01 14:20 | Lloyd Harris v Lacko, Lukas | 6-7,6-3,6-3 |
| Challenger Eckental | 2019/10/31 16:10 | Smith, John-Patrick v Lacko, Lukas | 5-7,3-6 |
| Challenger Eckental | 2019/10/30 13:20 | Lacko, Lukas v Dennis Novak | 6-4,4-6,6-4 |
| Challenger Eckental | 2019/10/28 19:20 | Lacko, Lukas v Max Wiskandt | 6-4,6-1 |
| Challenger Ismaning | 2019/10/20 11:30 | Maxime Cressy v Lacko, Lukas | 3-6,0-6 |
| Challenger Ismaning | 2019/10/19 14:20 | Lacko, Lukas v Lenz, Julian | 6-3,3-6,7-6 |
| Challenger Ismaning | 2019/10/18 14:15 | Gabashvili, Teimuraz v Lacko, Lukas | 7-5,4-6,4-6 |
| Challenger Ismaning | 2019/10/17 15:15 | Lacko, Lukas v Baldi, Filippo | 6-1,6-4 |
| Challenger Eckental | 2019/10/30 11:30 | Troicki, Viktor v Botic Van De Zandschulp | 6-3,3-6,4-6 |
| Challenger - Hambourg | 2019/10/24 14:50 | Bernabe Zapata Miralles v Troicki, Viktor | 6-3,7-6 |
| Challenger - Hambourg | 2019/10/22 18:05 | Darcis, Steve v Troicki, Viktor | 6-4,6-7,3-6 |
| ATP Stockholm | 2019/10/13 13:40 | Troicki, Viktor v Dennis Novak | 5-7,1-6 |
| Shanghai, Chine | 2019/10/05 08:15 | Londero, Juan Ignacio v Troicki, Viktor | 6-4,7-6 |
| Nur-Sultan II, Kazakhstan | 2019/10/01 07:30 | Troicki, Viktor v Gabashvili, Teimuraz | 3-6,3-6 |
| Montreal, Canada | 2019/08/03 19:30 | Troicki, Viktor v Klahn, Bradley | 5-7,3-6 |
| Washington, USA | 2019/07/28 16:00 | Troicki, Viktor v Thai-Son Kwiatkowski | 3-6,7-6,4-6 |