Stadium: Lapulita&Service (CC) Round: 166 Ground: Clay
| Challenger - Santiago | 2019/03/05 15:40 | Haerteis, Johannes v Pedro Martinez | 1-6,4-6 |
| Challenger - Santiago | 2019/03/04 15:30 | Haerteis, Johannes v Sumit Nagal | 6-4,0-6,6-3 |
| Challenger - Morelos | 2019/02/19 16:00 | Gonzalez, Alejandro v Haerteis, Johannes | 6-3,6-1 |
| Barnstaple, Singles Qualifying M-ITF-GBR-01A | 2019/02/12 10:00 | Jack Draper v Haerteis, Johannes | 7-6,6-3 |
| Challenger - Koblenz | 2019/01/15 12:45 | Horansky, Filip v Haerteis, Johannes | 7-6,6-4 |
| Challenger - Koblenz | 2019/01/14 15:40 | Haerteis, Johannes v Safranek, Vaclav | 7-6,4-6,6-3 |
| Challenger Bratislava | 2018/11/06 15:15 | Haerteis, Johannes v Lukas Rosol | 3-6,3-6 |
| Challenger Bratislava | 2018/11/05 10:00 | Haerteis, Johannes v Pavic, Ante | 4-6,7-5,7-6 |
| ITF - M25 Santa Margherita | 2019/03/26 13:00 | Turchetti, Nicolo v Bortolotti, Marco | 7-5,6-3 |
| Murcia, Singles Qualifying M-ITF-ESP-06A | 2019/03/22 11:50 | Carlos Lopez Montagud v Bortolotti, Marco | 7-6,7-6 |
| Murcia, Singles Qualifying M-ITF-ESP-06A | 2019/03/21 14:10 | Pedro Vives Marcos v Bortolotti, Marco | 3-6,6-2,3-6 |
| Murcia, Singles Qualifying M-ITF-ESP-06A | 2019/03/19 10:30 | Markovic, Goran v Bortolotti, Marco | 1-6,7-5,1-6 |
| ITF - M25 Trente | 2019/02/26 18:00 | Okala, Jules v Bortolotti, Marco | 6-1,6-0 |
| Aktobe, Singles Qualifying M-ITF-KAZ-02A | 2019/02/21 09:15 | Kravchuk, Konstantin v Bortolotti, Marco | 6-1,7-5 |
| Aktobe, Singles Qualifying M-ITF-KAZ-02A | 2019/02/20 09:40 | Yitbarek, Simon v Bortolotti, Marco | 4-6,4-6 |
| Aktobe, Singles Qualifying M-ITF-KAZ-02A | 2019/02/14 05:00 | Gabashvili, Teimuraz v Bortolotti, Marco | 6-2,6-1 |