Stadium: Court 3 Round: 24 Ground: Hardcourt indoor
| Challenger Eckental | 2019/10/29 09:00 | John-Patrick Smith v Johannes Haerteis | 7-6,6-7,7-6 |
| Challenger Eckental | 2019/10/31 16:10 | John-Patrick Smith v Lukas Lacko | 5-7,3-6 |
| 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 |
| ITF M15 Prague | 2019/11/06 14:40 | Oleksii Krutykh v Johannes Haerteis | 4-6,7-6,6-2 |
| Challenger Eckental | 2019/10/29 09:00 | John-Patrick Smith v Johannes Haerteis | 7-6,6-7,7-6 |
| Challenger Hamburg | 2019/10/22 08:00 | Cem Ilkel v Johannes Haerteis | 7-5,6-1 |
| Challenger Ismaning | 2019/10/17 11:00 | Zdenek Kolar v Johannes Haerteis | 6-7,6-7 |
| Challenger Ismaning | 2019/10/16 11:50 | Johannes Haerteis v Robin Haase | 6-4,6-7,7-6 |
| Challenger Ismaning | 2019/10/14 15:10 | Johannes Haerteis v Maximilian Neuchrist | 6-4,6-4 |
| Challenger Nur-Sultan 2 | 2019/10/01 04:00 | Fabien Reboul v Johannes Haerteis | 6-4,6-7,6-3 |
| Challenger Glasgow | 2019/09/18 15:05 | Johannes Haerteis v Tobias Kamke | 3-6,4-6 |