ITF M25 - Trnava 03/28 12:00 26 Aleksandr Braynin v Sebastian Fanselow 4-6,7-6,4-6
ITF M25 - Trnava 03/26 15:00 25 [428] David Poljak v Sebastian Fanselow [319] 3-6,2-6
ITF M25 Loule 03/22 10:30 27 Adria Soriano Barrera v Sebastian Fanselow 7-6,0-6,7-6
ITF M25 Loule 03/21 10:30 26 Tomas C Abasolo v Sebastian Fanselow 1-6,1-6
ITF M25 Loule 03/20 15:00 25 Federico Iannaccone v Sebastian Fanselow 3-6,2-6
Challenger - Hamburg 03/12 12:30 25 [175] Yunchaokete Bu v Sebastian Fanselow [316] 6-1,6-3
ITF M25 - Quinta Do Lago 03/06 12:15 25 [389] George Loffhagen v Sebastian Fanselow [316] 6-4,6-4
Challenger - New Delhi 02/25 07:20 14 Sebastian Fanselow v Yurii Dzhavakian 4-6,6-7
Challenger - Pune 02/20 11:05 25 [313] Sebastian Fanselow v Duje Ajdukovic [125] 7-5,6-7,3-6
Challenger - Pune 02/19 07:30 19 [266] Enrico Dalla Valle v Sebastian Fanselow [313] 6-4,6-7,3-6
Challenger - Pune 02/18 12:35 14 [432] Jonas Forejtek v Sebastian Fanselow [313] 6-7,4-6
Challenger - Cleveland 01/31 16:00 26 [266] Tennys Sandgren v Sebastian Fanselow [313] 6-0,7-6
Challenger - Cleveland 01/30 15:00 25 Sebastian Fanselow v William Grant 7-6,6-1
Challenger Indian Wells 01/27 18:00 28 [143] Zachary Svajda v Sebastian Fanselow [324] 6-2,6-4
Challenger Indian Wells 01/26 18:00 27 [473] Learner Tien v Sebastian Fanselow [324] 6-7,7-5,4-6
Challenger Indian Wells 01/25 18:00 26 Sebastian Fanselow v Trevor Svajda 6-4,6-4
Challenger Indian Wells 01/23 21:35 25 [324] Sebastian Fanselow v Vasek Pospisil [450] 6-2,7-5
Challenger Indian Wells 01/15 22:50 25 [400] Giovanni Oradini v Sebastian Fanselow [324] 6-3,7-6
Challenger - Oeiras 01/10 13:55 26 [320] Leandro Riedi v Sebastian Fanselow [324] 6-3,6-0
Challenger - Oeiras 01/09 10:30 25 [324] Sebastian Fanselow v Jaime Faria [394] Retired
Challenger - Oeiras 01/08 13:40 19 [299] Tristan Lamasine v Sebastian Fanselow [324] 4-6,4-6
Challenger - Oeiras - Kwal. 01/07 16:00 14 [366] Egor Gerasimov v Sebastian Fanselow [321] 6-7,4-6
Challenger - Oeiras 01/01 18:10 25 [255] Cem Ilkel v Sebastian Fanselow [321] 6-3,3-6,7-5
Challenger - Maia 11/28 12:15 25 [324] Sebastian Fanselow v Karl Friberg [385] 6-3,3-6,4-6
Challenger - Champaign 11/16 18:20 26 [328] Sebastian Fanselow v Alex Michelsen [99] 3-6,2-6
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