Stadium: Court 4 Round: 28 Ground: Clay
| ITF Ukraine F2 | 2018/05/17 07:05 | Fortuna, Claudio v Merckx, Jonas | 3-6,2-6 |
| ITF Ukraine F2 | 2018/05/16 12:00 | Luca Giacomini v Merckx, Jonas | 4-6,6-3,5-7 |
| ITF Ukraine F2 | 2018/05/15 10:05 | Jordan Correia Passos Do Carmo v Merckx, Jonas | 6-7,4-6 |
| ITF France F8 | 2018/04/27 11:00 | Jacq, Gregoire v Merckx, Jonas | 6-2,6-4 |
| ITF France F8 | 2018/04/26 09:00 | Vibert, Francois Arthur v Merckx, Jonas | 0-6,6-4,6-7 |
| ITF France F8 | 2018/04/24 08:00 | Merckx, Jonas v Lucas Miedler | 6-0,3-6,7-5 |
| ITF Turkey F13 | 2018/04/04 08:40 | Orlando Luz v Merckx, Jonas | 6-4,6-4 |
| Qatar F3, Singles | 2018/03/14 12:00 | El Midhawy, Adam v Merckx, Jonas | 7-6,6-2 |
| ITF Ukraine F2 | 2018/05/17 10:00 | Boychuk, Roman v Kolisnyk, Olexiy | 6-7,3-6 |
| ITF Ukraine F2 | 2018/05/15 10:30 | Kolisnyk, Olexiy v Brechemier, Thomas | 6-2,6-2 |
| ITF Ukraine F1 | 2018/05/09 07:00 | Kolisnyk, Olexiy v Vitaliy Sachko | 2-6,4-6 |
| ITF Ukraine F1 | 2018/05/07 07:00 | Kolisnyk, Olexiy v Didenko, Bogdan | 6-2,6-2 |
| Turkey F17, Singles Qualifying | 2018/05/01 11:30 | Kolisnyk, Olexiy v Gorazd Srbljak | 4-6,3-6 |
| Turkey F16, Singles Qualifying | 2018/04/25 07:30 | Kolisnyk, Olexiy v Cutuli, Domenico | 6-3,5-7,1-6 |
| Turkey F15, Singles Qualifying | 2018/04/17 07:30 | Kolisnyk, Olexiy v Karl Friberg | 3-6,1-6 |
| Turkey F14, Singles Qualifying | 2018/04/09 07:30 | Kolisnyk, Olexiy v Maxence Beauge | 3-6,1-6 |