| ITF USA F28 | 09/18 17:00 | 29 | Sebastian Fanselow v Evan Zhu | 7-5,6-7,6-3 | |
| ITF USA F28 | 09/17 18:35 | 28 | Martin Redlicki v Sebastian Fanselow | 6-4,4-6,6-7 | |
| ITF USA F28 | 09/17 08:00 | - | Martin Redlicki v Sebastian Fanselow | 6-4,4-6,6-7 | |
| ITF USA F28 | 09/16 17:00 | 27 | Sebastian Fanselow v Alexios Halebian | 7-5,6-4 | |
| ITF USA F28 | 09/15 19:20 | 26 | Sebastian Fanselow v Gage Brymer | 6-3,6-4 | |
| ITF USA F28 | 09/14 19:40 | 25 | Sebastian Fanselow v Michael Genender | 7-6,6-3 | |
| ITF Germany F11 | 08/19 10:00 | 27 | Sebastian Fanselow v Marc Giner | 4-6,6-7 | |
| ITF Germany F11 | 08/18 10:00 | 26 | Sebastian Fanselow v Jannis Kahlke | 6-4,6-3 | |
| ITF Germany F11 | 08/16 11:50 | 25 | Sebastian Fanselow v Henri Squire | 6-3,6-2 | |
| ITF Germany F10 | 08/10 11:30 | 26 | Jean-Marc Werner v Sebastian Fanselow | 6-3,4-6,6-3 | |
| ITF Germany F10 | 08/09 12:30 | 25 | Moritz Dettinger v Sebastian Fanselow | 2-6,3-6 | |
| ITF Germany F6 | 07/05 16:00 | 25 | Sebastian Fanselow v Julian Lenz | 4-6,2-6 | |
| Challenger Marburg | 06/28 15:15 | 25 | Sebastian Fanselow v Gerald Melzer | 4-6,2-6 | |
| ITF Germany F4 | 06/19 08:00 | 62 | Sebastian Fanselow v Filip Bergevi | 0-6,1-6 | |
| ITF Poland F3 | 06/06 10:45 | 25 | David Poljak v Sebastian Fanselow | 6-2,7-5 | |
| ITF Poland F2 | 06/03 09:20 | 27 | Sebastian Fanselow v Michal Schmid | 3-6,6-7 | |
| ITF Poland F2 | 06/02 08:00 | 26 | Sebastian Fanselow v Adrian Andrzejczuk | 6-2,6-0 | |
| ITF Poland F2 | 05/31 11:15 | 25 | Sebastian Fanselow v David Poljak | 7-5,6-2 | |
| Challenger Heilbronn Qual | 05/07 09:35 | 45 | Sebastian Fanselow v Artem Smirnov | 6-4,3-6,3-6 | |
| ITF USA F13 | 04/14 19:00 | 26 | Sebastian Fanselow v Stefan Kozlov | 2-6,2-6 | |
| ITF USA F13 | 04/13 20:00 | 25 | Sebastian Fanselow v Luke Bambridge | 4-6,6-3,6-4 | |
| ITF USA F12 | 04/07 19:35 | 26 | Sebastian Fanselow v Dennis Nevolo | 5-7,4-6 | |
| ITF USA F12 | 04/05 16:00 | 25 | Daniel Garza v Sebastian Fanselow | Retired | |
| ITF USA F11 | 03/24 18:25 | 26 | Henri Laaksonen v Sebastian Fanselow | 7-6,6-1 | |
| ITF USA F11 | 03/22 17:00 | 25 | Sebastian Fanselow v Wil Spencer | 6-0,6-1 | |
| ITF USA F10 | 03/20 02:45 | 28 | Sebastian Fanselow v Michael Mmoh | 3-6,3-6 | |
| ITF USA F10 | 03/17 19:30 | 26 | Sebastian Fanselow v Jonathan Mridha | 6-3,6-4 | |
| ITF Canada F2 | 03/09 21:30 | 25 | Filip Peliwo v Sebastian Fanselow | 7-6,1-6,6-3 | |
| ITF Canada F1 | 03/02 15:00 | 25 | Sebastian Fanselow v Hugo Nys | 1-6,3-6 | |
| Challenger Launceston Qual | 01/30 03:00 | 46 | Sebastian Fanselow v Lawrence Bataljin | Retired |