Stadium: Court12 Round: 26 Ground: Hardcourt outdoor
| Las Vegas, Singles M-ITF-USA-07A | 2020/03/04 19:15 | Haerteis, Johannes v Shane, Ryan | 6-4,6-4 |
| Challenger Columbus | 2020/02/27 19:50 | Haerteis, Johannes v Stebe, Cedrik-Marcel | 4-6,1-6 |
| Challenger Columbus | 2020/02/26 19:30 | Juan Pablo Ficovich v Haerteis, Johannes | 2-6,6-7 |
| Challenger Columbus | 2020/02/25 15:00 | Alexander Brown v Haerteis, Johannes | 3-6,6-7 |
| Drummondville, Canada | 2020/02/22 17:00 | Maxime Cressy v Haerteis, Johannes | 7-6,6-4 |
| Drummondville, Canada | 2020/02/21 17:40 | Roberto Cid Subervi v Haerteis, Johannes | 6-1,4-6,1-6 |
| Drummondville, Canada | 2020/02/20 17:45 | Haerteis, Johannes v Niklas-Salminen, Patrick | 7-6,5-7,7-5 |
| Drummondville, Canada | 2020/02/18 23:05 | Goncalo Oliveira v Haerteis, Johannes | 6-7,1-6 |
| Las Vegas, Singles M-ITF-USA-07A | 2020/03/04 22:30 | Smith, Errol v Blumenberg, Alex | 4-6,6-2,4-6 |
| ITF M15 Santo Domingo | 2019/12/11 16:00 | Blumenberg, Alex v Olivares, Jose | 3-6,1-6 |
| ITF M15 Santo Domingo | 2019/12/03 17:00 | Rodriguez-Pace, Ricardo v Blumenberg, Alex | 7-6,6-0 |
| ITF M15 East Lansing | 2019/11/20 18:45 | Stalder, Reese v Blumenberg, Alex | 6-3,6-0 |
| Orlando, Singles M-ITF-USA-38B | 2019/11/13 15:00 | Nicolas Alvarez v Blumenberg, Alex | 6-3,6-1 |
| Sao Paulo, Singles M-ITF-BRA-06A | 2019/10/16 14:00 | Zukas, Matias v Blumenberg, Alex | 6-3,6-2 |
| Santa Tecla, Singles M-ITF-ESA-01A | 2019/10/04 15:00 | Olivares, Jose v Blumenberg, Alex | 6-3,7-5 |
| Santa Tecla, Singles M-ITF-ESA-01A | 2019/10/02 23:45 | Enrique Bogo v Blumenberg, Alex | 6-7,4-6 |