Stadium: Court 3 Round: 25 Ground: Hardcourt indoor
| ITF M15 Haren | 2019/08/29 10:40 | Kristjan Tamm v Stefan Seifert | 3-6,3-6 |
| ITF M15 Liberec | 2019/10/24 08:00 | Stefan Seifert v Uladzimir Ignatik | 4-6,6-7 |
| ITF M15 Liberec | 2019/10/22 13:30 | Karlo Cubelic v Stefan Seifert | 3-6,2-6 |
| ITF M15 Bad Salzdetfurth | 2019/10/13 09:00 | Stefan Seifert v Jan Choinski | 3-6,1-6 |
| ITF M15 Bad Salzdetfurth | 2019/10/12 10:35 | Stefan Seifert v Justin Eleveld | 6-3,7-6 |
| ITF M15 Bad Salzdetfurth | 2019/10/11 11:50 | Marc-Andrea Huesler v Stefan Seifert | 2-6,3-6 |
| ITF M15 Bad Salzdetfurth | 2019/10/10 11:10 | Stefan Seifert v Daniel Altmaier | 6-4,7-5 |
| ITF M15 Bad Salzdetfurth | 2019/10/09 11:40 | Petr Michnev v Stefan Seifert | 4-6,6-7 |
| ITF M15 Forbach | 2019/09/28 13:30 | Harold Mayot v Stefan Seifert | 6-3,6-4 |
| ITF M15 Sharm El Sheikh | 2019/10/17 08:40 | Naoki Tajima v Kristjan Tamm | 6-2,1-6,6-1 |
| ITF M15 Sharm El Sheikh | 2019/10/16 14:30 | Kalman Boyd v Kristjan Tamm | 7-6,6-7,6-7 |
| ITF M15 Sharm El Sheikh | 2019/10/09 12:00 | Boris Fassbender v Kristjan Tamm | 6-3,4-6,6-3 |
| Davis Cup | 2019/09/14 09:10 | Hubert Hurkacz v Kristjan Tamm | 6-1,7-5 |
| ITF M15 Haren | 2019/08/29 10:40 | Kristjan Tamm v Stefan Seifert | 3-6,3-6 |
| ITF M15 Haren | 2019/08/28 11:15 | Benjamin Dhoe v Kristjan Tamm | 3-6,2-6 |
| ITF M15 Helsinki | 2019/08/21 10:15 | Kristjan Tamm v Karl Friberg | 3-6,1-6 |
| ITF M15 Telavi | 2019/08/03 06:00 | Yan Bondarevskiy v Kristjan Tamm | 6-2,6-1 |