| Challenger Biella | 05/30 09:00 | 14 | [247] Nicola Kuhn v Jacopo Berrettini [301] | 4-6,3-6 | |
| Challenger Heilbronn | 05/09 10:00 | 14 | [199] Joao Menezes v Nicola Kuhn [251] | 6-1,6-4 | |
| Challenger Biella | 05/03 10:15 | 19 | [251] Nicola Kuhn v Felipe M R Alves [234] | 2-6,4-6 | |
| Challenger Biella | 05/02 12:40 | 14 | [198] Quentin Halys v Nicola Kuhn [252] | 6-7,2-6 | |
| Challenger Oeiras | 04/05 14:00 | 25 | [247] Nicola Kuhn v Manuel Guinard [324] | 1-6,4-6 | |
| Challenger Oeiras | 03/31 10:00 | 26 | [362] Raul Brancaccio v Nicola Kuhn [250] | 6-1,6-2 | |
| Challenger Oeiras | 03/29 12:00 | 25 | [250] Nicola Kuhn v Teymuraz Gabashvili [258] | 6-3,6-3 | |
| Challenger Lille | 03/25 16:20 | 26 | [127] Arthur Rinderknech v Nicola Kuhn [250] | 6-3,6-1 | |
| Challenger Lille | 03/23 10:45 | 25 | [408] Matteo Martineau v Nicola Kuhn [250] | 3-6,2-6 | |
| Challenger Biella | 03/16 17:00 | 25 | [152] Sebastian Ofner v Nicola Kuhn [246] | 6-2,6-2 | |
| Challenger Biella | 03/15 09:30 | 19 | [246] Nicola Kuhn v Jonas Forejtek [334] | 6-4,3-6,3-6 | |
| Challenger Biella Qual | 03/14 09:00 | 14 | [247] Nicola Kuhn v Francesco Forti [436] | 7-6,6-4 | |
| Challenger Gran Canaria | 03/02 13:55 | 25 | [245] Nicola Kuhn v Steven Diez [172] | 2-6,2-6 | |
| Challenger Gran Canaria | 02/22 15:45 | 25 | [242] Nicola Kuhn v Riccardo Bonadio [295] | 4-6,4-6 | |
| Challenger Potchefstroom | 02/17 12:35 | 26 | [266] Akira Santillan v Nicola Kuhn [241] | 6-4,3-6,6-4 | |
| Challenger Potchefstroom | 02/15 12:00 | 25 | [241] Nicola Kuhn v Elliot Benchetrit [227] | 6-3,6-4 | |
| Challenger Potchefstroom | 02/09 08:00 | 25 | [411] Nick Chappell v Nicola Kuhn [241] | 6-1,2-6,7-6 | |
| Challenger Antalya Qual | 01/28 06:30 | 14 | [266] Blaz Kavcic v Nicola Kuhn [240] | 6-2,6-1 | |
| ATP Antalya | 01/09 10:10 | 26 | [253] Nicola Kuhn v David Goffin [16] | 0-6,2-6 | |
| ATP Antalya | 01/08 09:15 | 25 | [279] Matthias Bachinger v Nicola Kuhn [253] | Retired | |
| Challenger Marbella | 10/27 16:05 | 25 | [136] Federico Gaio v Nicola Kuhn [244] | 6-3,4-6,6-4 | |
| Challenger Alicante | 10/15 11:20 | 26 | [246] Nicola Kuhn v Steven Diez [174] | 1-6,2-6 | |
| Challenger Alicante | 10/13 10:15 | 25 | [176] Denis Istomin v Nicola Kuhn [246] | 6-7,3-6 | |
| Challenger Barcelona | 10/06 10:40 | 25 | [171] Dmitry Popko v Nicola Kuhn [242] | 7-5,6-4 | |
| French Open | 09/21 10:05 | 14 | [205] Liam Broady v Nicola Kuhn [240] | 6-4,7-6 | |
| Challenger Iasi | 09/15 07:00 | 25 | [189] Carlos Taberner v Nicola Kuhn [240] | 6-3,6-2 | |
| Challenger Prostejov | 09/05 13:30 | 64 | [175] Filip Horansky v Nicola Kuhn [234] | 6-3,6-4 | |
| Challenger Prague | 08/15 10:30 | 24 | Nicola Kuhn v Jiri Lehecka | 3-6,3-6 | |
| Spanish Summer League | 08/01 08:30 | - | [138] Ilya Ivashka v Nicola Kuhn [232] | 6-3,6-4 | |
| Spanish Summer League | 07/31 15:30 | - | [232] Nicola Kuhn v Adrian Menendez-Maceiras [264] | 6-1,5-7,6-2 |