Round: 27 Ground: Hardcourt indoor
| Challenger Heilbronn | 2015/05/11 15:00 | Jason Kubler v Jeremy Jahn | 6-7,6-4,7-5 |
| Challenger Heilbronn Qual | 2015/05/10 11:25 | Henri Laaksonen v Jeremy Jahn | 4-6,4-6 |
| ITF Turkey F7 | 2015/02/18 09:10 | Jeremy Jahn v Franko Skugor | 4-6,6-4,2-6 |
| ITF Turkey F7 | 2015/02/17 07:30 | Kittiphong Wachiramanowong v Jeremy Jahn | 1-6,2-6 |
| ITF Turkey F7 | 2015/02/14 07:00 | Cheong Hwi Kim v Jeremy Jahn | 0-6,1-6 |
| ITF Turkey F6 | 2015/02/12 10:00 | Dimitar Kuzmanov v Jeremy Jahn | 6-3,6-2 |
| ITF Turkey F6 | 2015/02/11 11:30 | Jeremy Jahn v Antoine Hoang | 6-1,7-6 |
| ITF Turkey F6 | 2015/02/07 09:00 | Sefa Suluoglu v Jeremy Jahn | 0-6,0-6 |
| ITF Netherlands F3 | 2015/06/30 10:00 | Niels Lootsma v Boy Westerhof | 6-7,4-6 |
| ITF Netherlands F2 | 2015/06/25 11:00 | Yannik Reuter v Niels Lootsma | 6-4,6-1 |
| ITF Netherlands F2 | 2015/06/23 14:00 | Niels Lootsma v Sam Barry | 4-6,7-6,7-6 |
| ITF Netherlands F1 | 2015/06/16 10:00 | Sam Barry v Niels Lootsma | 6-2,6-4 |
| ITF Italy F13 | 2015/06/09 16:45 | Claudio Fortuna v Niels Lootsma | 4-6,7-6,6-4 |
| ITF Great Britain F4 | 2015/03/19 10:30 | Niels Lootsma v Yannick Mertens | 5-7,3-6 |
| ITF Great Britain F4 | 2015/03/17 10:00 | Niels Lootsma v Richard Gabb | 3-6,6-4,6-4 |
| ITF Italy F1 | 2015/02/21 17:25 | Niels Lootsma v Laurynas Grigelis | 4-6,2-6 |