| Challenger - Champaign | 11/15 00:15 | 25 | [350] Aidan Mchugh v Sebastian Fanselow [328] | 2-6,6-4,3-6 | |
| Challenger - Knoxville | 11/09 16:00 | 26 | [141] Zachary Svajda v Sebastian Fanselow [335] | 6-2,7-5 | |
| Challenger - Knoxville | 11/07 21:40 | 25 | [335] Sebastian Fanselow v Cannon Kingsley [422] | 6-4,6-2 | |
| Challenger - Knoxville | 11/06 17:35 | 19 | [335] Sebastian Fanselow v Alex Rybakov [422] | 6-7,6-4,6-4 | |
| Challenger - Knoxville | 11/05 19:00 | 14 | Sebastian Fanselow v Kyle Kang | 6-3,6-3 | |
| Challenger - Charlottesville | 10/30 15:50 | 19 | [338] Sebastian Fanselow v Darian King [476] | 3-6,2-6 | |
| Challenger - Charlottesville | 10/29 20:25 | 14 | Sebastian Fanselow v Fons Van Sambeek | 6-0,6-1 | |
| ITF - M25 Tavira | 10/23 12:00 | 29 | [374] Sebastian Fanselow v Henrique Rocha [288] | 6-2,6-3 | |
| ITF - M25 Tavira | 10/21 11:35 | 28 | Martin Landaluce v Sebastian Fanselow | 6-3,2-6,2-6 | |
| ITF - M25 Tavira | 10/20 13:00 | 27 | Sebastian Fanselow v Twan Van Zijl | 6-0,6-1 | |
| ITF - M25 Tavira | 10/19 12:00 | 26 | Sebastian Fanselow v Tiago Pereira | 6-0,7-5 | |
| ITF - M25 Tavira | 10/18 13:25 | 25 | Sebastian Fanselow v Mats Bredschneijder | 7-5,7-5 | |
| ITF - M25 Tavira | 10/14 11:00 | 28 | [394] Sebastian Fanselow v Henrique Rocha [321] | 3-6,3-6 | |
| ITF - M25 Tavira | 10/13 10:00 | 27 | Aleksandr Braynin v Sebastian Fanselow | 1-6,5-7 | |
| ITF - M25 Tavira | 10/12 11:00 | 26 | [470] Johannes Ingildsen v Sebastian Fanselow [394] | 4-6,5-7 | |
| ITF - M25 Tavira | 10/11 08:30 | 25 | Fabio Coelho v Sebastian Fanselow | 2-6,2-6 | |
| Challenger - Lissabon | 10/01 09:00 | 14 | [399] Sebastian Fanselow v Francesco Forti [349] | 4-6,1-6 | |
| Challenger - Braga | 09/25 09:00 | 19 | [353] Carlos Sanchez Jover v Sebastian Fanselow [434] | 4-6,6-4,6-1 | |
| Challenger - Braga | 09/24 09:00 | 14 | [434] Sebastian Fanselow v Carlos Taberner [317] | 6-3,1-6,7-5 | |
| ITF M25 Setubal | 09/22 13:30 | 27 | Dali Blanch v Sebastian Fanselow | 2-6,7-5,6-4 | |
| ITF M25 Setubal | 09/21 14:30 | 26 | Alejandro T Alvarez v Sebastian Fanselow | 5-7,3-6 | |
| ITF M25 Setubal | 09/20 12:10 | 25 | Patrick Schoen v Sebastian Fanselow | 0-6,3-6 | |
| ITF M25 - Sintra | 09/17 10:00 | 29 | [371] Henrique Rocha v Sebastian Fanselow [453] | 6-2,6-3 | |
| ITF M25 - Sintra | 09/16 11:30 | 28 | [374] Martin Damm v Sebastian Fanselow [453] | 6-7,6-4,4-6 | |
| ITF M25 - Sintra | 09/15 09:00 | 27 | [453] Sebastian Fanselow v Duarte Vale [393] | 6-4,6-1 | |
| ITF M25 - Sintra | 09/14 11:20 | 26 | Sebastian Fanselow v Tomas C Abasolo | 6-7,6-3,6-4 | |
| ITF M25 - Sintra | 09/13 12:20 | 25 | Sebastian Fanselow v Kuzey Cekirge | 7-6,7-5 | |
| ITF M25 - Sintra | 09/09 10:30 | 28 | [261] Jaime Faria v Sebastian Fanselow [457] | 6-3,3-6,6-3 | |
| ITF M25 - Sintra | 09/08 09:30 | 27 | [457] Sebastian Fanselow v Duarte Vale [393] | 6-4,6-1 | |
| ITF M25 - Sintra | 09/07 10:00 | 26 | Sebastian Fanselow v Michele Ribecai | 2-6,6-3,6-2 |