Stadium: Court 5 Round: 25 Ground: Hardcourt outdoor
| ITF Turkey F20 Qual | 2018/05/24 09:15 | Gelhardt, Luca v Arreche, Nicolas Alberto | 3-6,3-6 |
| Turkey F20, Singles Qualifying | 2018/05/22 07:30 | Thiem, Moritz v Gelhardt, Luca | 3-6,0-6 |
| ITF Turkey F19 | 2018/05/16 07:00 | Gelhardt, Luca v Juan Pablo Varillas | 6-7,3-6 |
| ITF Poland F2 | 2018/05/09 09:40 | Gelhardt, Luca v Netuschil, Marvin | 5-7,5-7 |
| ITF Poland F2 | 2018/05/07 11:00 | David Poljak v Gelhardt, Luca | 4-6,2-6 |
| ITF Poland F1 | 2018/05/03 09:00 | Gelhardt, Luca v Meis, Pascal | 3-6,3-6 |
| ITF Poland F1 | 2018/05/01 09:45 | Smola, Maciej v Gelhardt, Luca | 6-4,4-6,0-6 |
| Challenger Lille Qual | 2018/03/17 17:45 | Borsos, Gabor v Gelhardt, Luca | 6-4,6-0 |
| Turkey F20, Singles Qualifying | 2018/05/23 07:30 | Marsel Ilhan v Tashi, Vullnet | 6-7,4-6 |
| ITF Turkey F19 | 2018/05/20 07:30 | Marsel Ilhan v Borza, Bogdan | 6-4,6-4 |
| ITF Turkey F19 | 2018/05/19 07:30 | Marsel Ilhan v Boborykin, Alexander | 6-2,6-4 |
| ITF Turkey F19 | 2018/05/18 07:30 | Marsel Ilhan v Schroll, Philipp | 6-4,7-5 |
| ITF Turkey F19 | 2018/05/17 09:20 | Marsel Ilhan v Alexander Weis | 2-6,6-4,6-2 |
| ITF Turkey F18 | 2018/05/12 07:30 | Marsel Ilhan v Juan Pablo Varillas | 6-7,7-6,2-6 |
| ITF Turkey F18 | 2018/05/11 08:00 | Marsel Ilhan v Khaledan, Shahin | 6-4,6-3 |
| ITF Turkey F18 | 2018/05/08 11:25 | Marsel Ilhan v Trocker, Moritz | 6-2,6-4 |