Stadium: Center Round: 24 Ground: Clay
| Challenger - Tallahassee | 2019/04/22 14:00 | Benjamin Hassan v Haerteis, Johannes | 6-4,6-1 |
| Challenger - Sarasota | 2019/04/15 14:00 | Heliovaara, Harri v Haerteis, Johannes | 6-3,6-2 |
| Challenger - Barletta | 2019/04/09 13:55 | Haerteis, Johannes v Andrea Pellegrino | 4-6,4-6 |
| Challenger - Barletta | 2019/04/08 08:00 | Haerteis, Johannes v Bortolotti, Marco | 4-6,6-1,6-4 |
| Challenger - Santiago | 2019/03/05 15:40 | Haerteis, Johannes v Pedro Martinez | 1-6,4-6 |
| Challenger - Santiago | 2019/03/04 15:30 | Haerteis, Johannes v Sumit Nagal | 6-4,0-6,6-3 |
| Challenger - Morelos | 2019/02/19 16:00 | Gonzalez, Alejandro v Haerteis, Johannes | 6-3,6-1 |
| Barnstaple, Singles Qualifying M-ITF-GBR-01A | 2019/02/12 10:00 | Jack Draper v Haerteis, Johannes | 7-6,6-3 |
| Challenger - Sarasota | 2019/04/16 20:55 | Song, Evan v Aleksandar Vukic | 2-6,6-3,0-6 |
| Challenger - Sarasota | 2019/04/15 22:30 | Song, Evan v Aragone, JC | 6-3,6-0 |
| Monterrey, Mexico | 2019/04/03 18:50 | Song, Evan v Klahn, Bradley | 4-6,3-6 |
| Monterrey, Mexico | 2019/04/02 16:00 | Song, Evan v Matias Franco Descotte | 2-6,6-3,6-0 |
| Drummondville, Canada | 2019/03/13 15:35 | Quiroz, Roberto v Song, Evan | 6-4,6-3 |
| Drummondville, Canada | 2019/03/12 14:00 | Pavic, Ante v Song, Evan | 2-6,1-6 |
| ATP - Indian Wells | 2019/03/05 22:20 | Istomin, Denis v Song, Evan | 6-3,6-4 |
| Challenger - Morelos | 2019/02/18 16:00 | Song, Evan v Stefan Kozlov | 5-7,3-6 |