Stadium: Court 2 Round: 46 Ground: Clay
| Challenger Heilbronn Qual | 2018/05/12 11:30 | Mikhail Balmashev v Marc Giner | 6-4,4-6,3-6 |
| Challenger Rom Kval | 2018/05/06 09:15 | Marc Giner v Corrado Summaria | 3-6,4-6 |
| Challenger Rom Kval | 2018/05/05 09:00 | Marc Giner v Vasile Antonescu | 6-3,6-2 |
| ITF Spain F10 | 2018/04/26 09:00 | Carlos Boluda-Purkiss v Marc Giner | 6-4,1-6,7-6 |
| ITF Spain F10 | 2018/04/24 08:00 | Marc Giner v Carlos Lopez Montagud | 6-0,4-6,6-4 |
| ITF Spain F9 | 2018/04/18 09:50 | Marc Giner v Javier Marti | 6-7,2-6 |
| ITF Portugal F7 | 2018/04/11 10:50 | Evan Furness v Marc Giner | 6-3,6-0 |
| Challenger Marbella Qual | 2018/03/26 09:00 | Marc Giner v Marco Trungelliti | 4-6,2-6 |
| Challenger Rom Kval | 2018/05/05 09:20 | Corrado Summaria v Jeremy Jahn | 7-5,4-6,6-4 |
| Challenger Francavilla Qual | 2018/04/22 08:00 | Jeremy Jahn v Joris De Loore | 7-6,3-6,3-6 |
| Challenger Francavilla Qual | 2018/04/21 10:15 | Jeremy Jahn v Grzegorz Panfil | 6-2,4-6,6-2 |
| Challenger Alicante Qual | 2018/04/02 12:10 | Jeremy Jahn v Ivan Gakhov | 6-3,6-7,1-6 |
| Challenger Alicante Qual | 2018/04/01 12:45 | Aslan Karatsev v Jeremy Jahn | 4-6,7-5,4-6 |
| Challenger Alicante Qual | 2018/03/31 12:20 | Javier Barranco Cosano v Jeremy Jahn | 4-6,7-5,4-6 |
| Challenger Marbella Qual | 2018/03/25 15:10 | Jeremy Jahn v Lukas Rosol | 4-6,3-6 |
| Challenger Marbella Qual | 2018/03/24 16:25 | Jeremy Jahn v Ivan Gakhov | 4-6,6-1,6-3 |