Stadion: Center Round: 24 Ground: Clay
| Challenger - Tallahassee | 2019/04/22 14:00 | Benjamin Hassan v Johannes Haerteis | 6-4,6-1 |
| Challenger - Sarasota | 2019/04/15 14:00 | Harri Heliovaara v Johannes Haerteis | 6-3,6-2 |
| Challenger - Barletta | 2019/04/09 13:55 | Johannes Haerteis v Andrea Pellegrino | 4-6,4-6 |
| Challenger - Barletta | 2019/04/08 08:00 | Johannes Haerteis v Marco Bortolotti | 4-6,6-1,6-4 |
| Challenger - Santiago | 2019/03/05 15:40 | Johannes Haerteis v Pedro Martinez | 1-6,4-6 |
| Challenger - Santiago | 2019/03/04 15:30 | Johannes Haerteis v Sumit Nagal | 6-4,0-6,6-3 |
| Challenger - Morelos | 2019/02/19 16:00 | Alejandro Gonzalez v Johannes Haerteis | 6-3,6-1 |
| ITF - M25 - Barnstaple | 2019/02/12 10:00 | Jack Draper v Johannes Haerteis | 7-6,6-3 |
| Challenger - Sarasota | 2019/04/16 20:55 | Evan Song v Aleksandar Vukic | 2-6,6-3,0-6 |
| Challenger - Sarasota | 2019/04/15 22:30 | Evan Song v JC Aragone | 6-3,6-0 |
| Challenger - Monterrey | 2019/04/03 18:50 | Evan Song v Bradley Klahn | 4-6,3-6 |
| Challenger - Monterrey | 2019/04/02 16:00 | Evan Song v Matias Franco Descotte | 2-6,6-3,6-0 |
| Challenger - Drummondville | 2019/03/13 15:35 | Roberto Quiroz v Evan Song | 6-4,6-3 |
| Challenger - Drummondville | 2019/03/12 14:00 | Ante Pavic v Evan Song | 2-6,1-6 |
| ATP - Indian Wells | 2019/03/05 22:20 | Denis Istomin v Evan Song | 6-3,6-4 |
| Challenger - Morelos | 2019/02/18 16:00 | Evan Song v Stefan Kozlov | 5-7,3-6 |