Stadium: Elizabeth Moore Court Round: 166 Ground: Clay
| Challenger Zhangjiagang | 2019/03/19 03:05 | Guilherme Clezar v Harri Heliovaara | 7-6,6-3 |
| Challenger Zhangjiagang | 2019/03/18 02:00 | Harri Heliovaara v Luca Margaroli | 2-6,6-3,6-1 |
| Challenger Zhuhai | 2019/03/05 03:45 | Yunseong Chung v Harri Heliovaara | 7-5,6-2 |
| Challenger Zhuhai | 2019/03/04 02:00 | Harri Heliovaara v Haitong Xia | 6-1,6-4 |
| Challenger Champaign | 2018/11/13 16:00 | Harri Heliovaara v Mikael Torpegaard | 3-6,7-5,6-4 |
| Challenger Charlottesville | 2018/10/27 14:00 | Marcos Giron v Harri Heliovaara | 3-6,6-1,6-1 |
| Challenger Stockton | 2018/10/01 17:00 | Harri Heliovaara v Alexander Sarkissian | 6-4,4-6,4-6 |
| Challenger Stockton | 2018/09/30 19:35 | Harri Heliovaara v Sem Verbeek | 6-1,6-4 |
| 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 Koblenz | 2019/01/15 12:45 | Filip Horansky v Johannes Haerteis | 7-6,6-4 |
| Challenger Koblenz | 2019/01/14 15:40 | Johannes Haerteis v Vaclav Safranek | 7-6,4-6,6-3 |