| ITF USA F2 | 01/14 20:10 | 26 | Meister, Nicolas v Sebastian Fanselow | 4-6,3-6 | |
| ITF USA F2 | 01/12 18:00 | 25 | Fawcett, Tom v Sebastian Fanselow | 6-3,0-6,5-7 | |
| ITF USA F1 | 01/08 18:00 | 27 | Tennys Sandgren v Sebastian Fanselow | 5-7,6-4,7-6 | |
| ITF USA F1 | 01/07 21:20 | 26 | Sebastian Fanselow v King, Evan | 4-6,6-3,6-4 | |
| ITF USA F1 | 01/06 01:00 | 25 | Johnson, Eric v Sebastian Fanselow | 1-6,1-6 | |
| ITF Australia F10 | 11/19 23:00 | 27 | Sebastian Fanselow v Stanek, Robin | 2-6,6-7 | |
| ITF Australia F10 | 11/19 01:05 | 26 | Sebastian Fanselow v Blake Mott | 4-6,6-4,6-0 | |
| ITF Australia F10 | 11/18 01:30 | 25 | Sebastian Fanselow v O'Shannessy, Adam | 6-2,6-0 | |
| ITF Australia F10 | 11/14 23:30 | 29 | Sebastian Fanselow v Mitchell, Benjamin | 1-6,4-6 | |
| ITF Australia F10 | 11/13 23:30 | 28 | Sebastian Fanselow v Tearney, Finn | 6-4,6-2 | |
| ITF Australia F10 | 11/12 23:30 | 27 | Smith, Connor v Sebastian Fanselow | 7-5,0-6,0-6 | |
| ITF Australia F10 | 11/12 02:00 | 26 | Sebastian Fanselow v Bourchier, Harry | 7-6,6-3 | |
| ITF Australia F10 | 11/11 04:45 | 25 | Nolan, Daniel v Sebastian Fanselow | 3-6,1-6 | |
| Challenger Traralgon | 10/25 23:00 | 25 | Mousley, Bradley v Sebastian Fanselow | 7-6,7-6 | |
| Challenger Traralgon Qual | 10/24 23:00 | 44 | Sebastian Fanselow v Marc Polmans | 6-1,6-3 | |
| ITF USA F27 | 09/23 21:30 | 25 | Sebastian Fanselow v Johnson, Eric | 5-7,3-6 | |
| ITF USA F26 | 09/19 17:00 | 28 | Sebastian Fanselow v Baughman, Deiton | 3-6,3-6 | |
| ITF USA F26 | 09/18 17:00 | 27 | Sebastian Fanselow v Ernesto Escobedo | 6-3,7-5 | |
| ITF USA F26 | 09/16 16:00 | 25 | Aleksandar Vukic v Sebastian Fanselow | 3-6,6-7 | |
| ITF Germany F7 | 07/16 10:45 | - | Dusan Lojda v Sebastian Fanselow | 6-2,6-1 | |
| ITF Germany F7 | 07/15 13:10 | - | Sebastian Fanselow v Lizariturry, Juan | 6-0,7-5 | |
| ITF Germany F6 | 07/12 12:00 | - | Kekez, Duje v Sebastian Fanselow | 4-6,2-6 | |
| ITF Germany F6 | 07/11 13:20 | - | Sebastian Fanselow v Meis, Pascal | 7-5,6-2 | |
| ITF Germany F6 | 07/10 15:15 | - | Sebastian Fanselow v Kahlke, Jannis | 6-2,3-6,6-3 | |
| ITF Germany F6 | 07/09 12:10 | - | Werner, Jean-Marc v Sebastian Fanselow | 1-6,4-6 | |
| ITF Germany F6 | 07/08 12:30 | - | Elmar Ejupovic v Sebastian Fanselow | 4-6,4-6 | |
| ITF Germany F5 | 07/02 14:30 | - | Sebastian Fanselow v Ehrat, Sandro | 4-6,4-6 | |
| ITF Germany F5 | 07/01 14:00 | - | Sebastian Fanselow v Netuschil, Marvin | Walkover | |
| ITF Germany F17 | 10/23 11:30 | - | Moraing, Mats v Sebastian Fanselow | 6-4,3-6,6-1 | |
| ITF Germany F17 | 10/22 13:00 | - | Sebastian Fanselow v Tchoutakian, Maxime | 6-4,6-2 |