Stadium: Court 3 Round: 26 Ground: Carpet indoor
| ITF - M15 Héraklion | 2019/11/17 08:30 | Erler, Alexander v Zielinski, Jan | 7-5,6-1 |
| ITF - M15 Héraklion | 2019/11/16 12:00 | Yshai Oliel v Erler, Alexander | 4-6,6-2,1-6 |
| ITF - M15 Héraklion | 2019/11/16 08:00 | Erler, Alexander v Nikita Mashtakov | 6-1,3-6,6-3 |
| ITF - M15 Héraklion | 2019/11/15 08:00 | Erler, Alexander v Billy Harris | 6-3,3-6,6-4 |
| ITF - M15 Héraklion | 2019/11/12 08:30 | Erler, Alexander v Toby Martin | 6-3,3-6,6-3 |
| ITF - M15 Héraklion | 2019/11/08 08:00 | Erler, Alexander v Yshai Oliel | 2-6,3-6 |
| ITF - M15 Héraklion | 2019/11/07 09:00 | Erler, Alexander v Hampel, Lenny | 6-3,6-4 |
| ITF - M15 Héraklion | 2019/11/05 08:30 | Erler, Alexander v Michael Zhu | 6-3,2-6,6-2 |
| ITF - M25 Nussloch | 2020/01/22 11:00 | Hoyt, Evan v Seifert, Stefan | 5-7,3-6 |
| ITF - M25 Nussloch | 2020/01/20 17:55 | Seifert, Stefan v Muscheites, Lasse | 6-4,6-3 |
| ITF - M25 Nussloch | 2020/01/20 10:05 | Seifert, Stefan v Albuszies, Niklas | 6-0,6-2 |
| ITF - M25 Nussloch | 2020/01/19 09:00 | Seifert, Stefan v Guenther, Paul-Georg | 6-3,6-1 |
| ITF - M15 Sharm El Sheikh | 2019/11/21 09:15 | Seifert, Stefan v Manafov, Vladyslav | 2-6,4-6 |
| ITF - M15 Sharm El Sheikh | 2019/11/20 13:50 | Seifert, Stefan v Filip Duda | 6-4,6-1 |
| ITF M15 Parnu | 2019/11/02 10:00 | Seifert, Stefan v Tyurnev, Evgeny | 5-7,7-5,3-6 |
| ITF M15 Parnu | 2019/11/01 11:55 | Seifert, Stefan v Pauwels, Maxime | 4-6,6-2,6-2 |