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