| Challenger - Nonthaburi | 08/23 03:30 | 25 | [318] Nicola Kuhn v Benjamin Lock [360] | 7-5,6-3 | |
| Challenger - Liberec | 08/02 12:40 | 25 | [65] Jiri Lehecka v Nicola Kuhn [310] | 6-2,6-1 | |
| Challenger - Segóvia | 07/27 16:00 | 26 | [131] Hugo Grenier v Nicola Kuhn [250] | 6-4,6-4 | |
| Challenger - Segóvia | 07/26 09:45 | 25 | [411] Adrian Menendez-Maceiras v Nicola Kuhn [250] | 2-6,4-6 | |
| ATP - Hamburgo | 07/19 12:35 | 25 | [6] Carlos Alcaraz v Nicola Kuhn [259] | 3-6,6-1,7-6 | |
| Wimbledon | 06/28 15:45 | 23 | [56] Brandon Nakashima v Nicola Kuhn [261] | 6-3,6-7,6-3,6-2 | |
| Wimbledon | 06/23 10:00 | 19 | [228] Rinky Hijikata v Nicola Kuhn [246] | 4-6,6-3,5-7,6-7 | |
| Wimbledon | 06/22 11:55 | 19 | [246] Nicola Kuhn v Cedrik-Marcel Stebe [215] | 6-3,6-2 | |
| Wimbledon | 06/20 13:30 | 14 | [259] Mate Valkusz v Nicola Kuhn [246] | 2-6,5-7 | |
| ATP - Halle | 06/11 09:50 | 14 | [253] Nicola Kuhn v Peter Gojowczyk [95] | 6-7,1-6 | |
| Challenger - Troisdorf | 05/26 09:30 | 26 | [250] Nicola Kuhn v Lukas Klein [327] | Retired | |
| Challenger - Troisdorf | 05/24 14:35 | 25 | [250] Nicola Kuhn v Thiago Seyboth Wild [259] | 7-6,6-4 | |
| Challenger - Túnis | 05/19 13:40 | 27 | [225] Filip Misolic v Nicola Kuhn [260] | 6-3,6-4 | |
| Challenger - Túnis | 05/18 09:15 | 26 | [282] Daniel Michalski v Nicola Kuhn [260] | 2-6,6-7 | |
| Challenger - Túnis | 05/17 09:00 | 25 | Calvin Hemery v Nicola Kuhn | 4-6,1-6 | |
| Challenger - Heilbronn | 05/10 10:45 | 25 | [467] Rudolf Molleker v Nicola Kuhn [258] | 6-4,4-6,6-4 | |
| Challenger - Savannah | 04/26 14:00 | 25 | [427] Arthur Fils v Nicola Kuhn [251] | 4-6,6-1,6-3 | |
| Challenger - Aguascalientes | 04/19 17:20 | 25 | Nicolas Barrientos v Nicola Kuhn | Cancelled | |
| Challenger - San Luis Potosi | 04/13 19:00 | 26 | [133] Andrej Martin v Nicola Kuhn [256] | 2-6,6-4,6-4 | |
| Challenger - San Luis Potosi | 04/11 22:30 | 25 | [256] Nicola Kuhn v Juan Pablo Ficovich [205] | 7-6,5-7,6-3 | |
| Challenger - Múrcia | 04/06 10:25 | 25 | [256] Nicola Kuhn v Carlos Gimeno Valero [379] | 6-3,2-6,1-6 | |
| Challenger - Oeiras | 03/28 16:10 | 25 | [174] Alessandro Giannessi v Nicola Kuhn [246] | 6-3,6-4 | |
| Challenger - Pau | 02/22 18:00 | 25 | [231] Nino Serdarusic v Nicola Kuhn [252] | 7-6,6-4 | |
| Challenger - Cleveland | 02/02 18:10 | 26 | [135] Ernesto Escobedo v Nicola Kuhn [247] | Retired | |
| Challenger - Cleveland | 01/31 21:20 | 25 | [247] Nicola Kuhn v Bjorn Fratangelo [154] | 7-6,6-4 | |
| Challenger Columbus | 01/26 15:00 | 27 | [251] Nicola Kuhn v Emilio Gomez [153] | 6-7,5-7 | |
| Challenger Columbus | 01/25 01:30 | 25 | Yasutaka Uchiyama v Nicola Kuhn | 6-7,4-6 | |
| Open da Austrália | 01/11 02:10 | 14 | [242] Nicola Kuhn v Emilio Gomez [155] | 4-6,4-6 | |
| Challenger - Traralgon | 01/06 02:35 | 26 | [252] Nino Serdarusic v Nicola Kuhn [242] | 6-3,7-6 | |
| Challenger - Traralgon | 01/04 05:00 | 25 | [242] Nicola Kuhn v Zdenek Kolar [142] | 6-3,6-4 |