Stadium: Court 1 Round: 26 Ground: Carpet indoor
| Challenger - Eckental | 2019/10/30 15:10 | Lukas Rosol v John-Patrick Smith | 4-6,2-6 |
| Challenger - Eckental | 2019/10/29 09:00 | John-Patrick Smith v Johannes Haerteis | 7-6,6-7,7-6 |
| Challenger - Hamburg | 2019/10/21 14:55 | John-Patrick Smith v Ruben Bemelmans | 5-7,4-6 |
| Challenger Glasgow | 2019/09/18 13:35 | Viktor Durasovic v John-Patrick Smith | 6-1,6-4 |
| Challenger - Cary | 2019/09/12 18:30 | Andreas Seppi v John-Patrick Smith | 6-3,6-2 |
| Challenger - Cary | 2019/09/11 17:40 | Nicolas Mejia v John-Patrick Smith | 4-6,5-7 |
| Challenger New Haven | 2019/09/04 17:50 | John-Patrick Smith v Henri Laaksonen | 6-7,6-7 |
| Challenger New Haven | 2019/09/03 15:20 | Nicolas Mejia v John-Patrick Smith | 7-6,3-6,4-6 |
| Challenger - Eckental | 2019/10/30 13:20 | Lukas Lacko v Dennis Novak | 6-4,4-6,6-4 |
| Challenger - Eckental | 2019/10/28 19:20 | Lukas Lacko v Max Wiskandt | 6-4,6-1 |
| Challenger Ismaning | 2019/10/20 11:30 | Maxime Cressy v Lukas Lacko | 3-6,0-6 |
| Challenger Ismaning | 2019/10/19 14:20 | Lukas Lacko v Julian Lenz | 6-3,3-6,7-6 |
| Challenger Ismaning | 2019/10/18 14:15 | Teymuraz Gabashvili v Lukas Lacko | 7-5,4-6,4-6 |
| Challenger Ismaning | 2019/10/17 15:15 | Lukas Lacko v Filippo Baldi | 6-1,6-4 |
| Challenger Ismaning | 2019/10/16 14:35 | Lukas Lacko v Vitaliy Sachko | 7-5,2-6,6-3 |
| US Open | 2019/08/23 15:00 | Tobias Kamke v Lukas Lacko | 7-5,6-3 |