Stadium: Center Court Round: 14 Ground: Hardcourt outdoor
| Challenger Pozoblanco | 2021/07/20 20:10 | Cem Ilkel v Johannes Haerteis | 6-2,7-6 |
| Challenger Amersfoort | 2021/07/13 08:30 | Mats Moraing v Johannes Haerteis | 6-1,6-0 |
| Challenger Braunschweig | 2021/07/04 11:55 | Johannes Haerteis v Nino Ehrenschneider | 6-3,3-6,4-6 |
| Challenger Prostejov | 2021/06/15 08:30 | Johannes Haerteis v Federico Coria | 1-6,0-6 |
| Challenger Prostejov | 2021/06/14 08:30 | Johannes Haerteis v David Poljak | 5-7,3-6 |
| Challenger Prostejov | 2021/06/13 09:00 | Johannes Haerteis v Jakub Nicod | 6-3,3-6,6-3 |
| Challenger Bratislava | 2021/06/06 14:15 | Skander Mansouri v Johannes Haerteis | 6-3,7-5 |
| Challenger Oeiras | 2021/05/25 14:00 | Johannes Haerteis v Filip Cristian Jianu | 3-6,0-6 |
| Challenger Charlottesville Qual | 2017/10/29 19:25 | Jared Hiltzik v Ammar Faleh Alhogbani | 1-6,6-1,6-3 |
| Davis Cup | 2017/04/05 08:10 | Ammar Faleh Alhogbani v Evgeniy Babak | 6-2,4-6,6-4 |
| Davis Cup | 2017/04/03 09:10 | Yusuf Qaed v Ammar Faleh Alhogbani | 0-6,2-6 |
| Challenger Charlottesville Qual | 2016/10/29 16:00 | Ammar Faleh Alhogbani v Jarryd Chaplin | 6-7,4-6 |