Stadium: Court 1 Round: 25 Ground: Hardcourt indoor
| Challenger Cleveland | 2020/02/11 17:45 | Goncalo Oliveira v Skander Mansouri | 5-7,6-7 |
| Challenger Dallas | 2020/02/03 19:10 | Ernesto Escobedo v Goncalo Oliveira | 6-2,6-3 |
| Challenger Newport Beach | 2020/01/27 22:30 | Maxime Cressy v Goncalo Oliveira | 6-1,6-4 |
| Challenger Bangkok | 2020/01/13 04:35 | Ze Zhang v Goncalo Oliveira | 6-4,6-2 |
| ITF M15 Hong Kong | 2020/01/08 03:15 | Goncalo Oliveira v Takashi Saito | 6-7,6-7 |
| Challenger Kobe | 2019/11/04 02:40 | Tim Van Rijthoven v Goncalo Oliveira | 6-1,6-4 |
| Challenger Shenzhen 2 | 2019/10/30 04:20 | Zhizhen Zhang v Goncalo Oliveira | 6-0,6-1 |
| Challenger Shenzhen 2 | 2019/10/28 04:40 | Jie Cui v Goncalo Oliveira | 7-6,1-6,4-6 |
| Challenger Drummondville | 2020/02/17 17:45 | Johannes Haerteis v Tony Bourcet | 6-2,6-0 |
| ITF M25 Nussloch | 2020/01/24 19:00 | Johannes Haerteis v Ruben Bemelmans | 4-6,3-6 |
| ITF M25 Nussloch | 2020/01/23 10:55 | Giulio Zeppieri v Johannes Haerteis | 6-3,3-6,6-7 |
| ITF M25 Nussloch | 2020/01/22 12:50 | Jakob Aichhorn v Johannes Haerteis | 2-6,6-4,4-6 |
| ITF M15 Manacor | 2020/01/15 12:35 | Johannes Haerteis v Pablo Llamas Ruiz | 3-6,4-6 |
| ITF M15 Prague | 2019/11/06 14:40 | Oleksii Krutykh v Johannes Haerteis | 4-6,7-6,6-2 |
| Challenger Eckental | 2019/10/29 09:00 | John-Patrick Smith v Johannes Haerteis | 7-6,6-7,7-6 |
| Challenger Hamburg | 2019/10/22 08:00 | Cem Ilkel v Johannes Haerteis | 7-5,6-1 |