Stadium: Court 1 Round: 45
| Challenger Heilbronn Qual | 2018/05/13 10:35 | Clement Geens v Tobias Simon | 7-5,3-6,6-3 |
| Challenger Puerto Vallarta Qual | 2018/04/29 16:00 | Tobias Simon v Ivan Endara | 6-1,6-4 |
| Challenger Puerto Vallarta Qual | 2018/04/28 16:00 | Tobias Simon v Juan Ignacio Batalla | 6-4,6-4 |
| Challenger - Leon | 2018/04/24 19:20 | Tobias Simon v Christopher Eubanks | 6-7,6-7 |
| Challenger Leon Qual | 2018/04/23 16:00 | Rubin Statham v Tobias Simon | 7-6,6-3 |
| Challenger Leon Qual | 2018/04/22 16:00 | Felipe Mantilla v Tobias Simon | 5-7,3-6 |
| Challenger Leon Qual | 2018/04/21 17:00 | Federico Zeballos v Tobias Simon | 4-6,6-4,3-6 |
| Challenger Guadalajara Qual | 2018/04/14 20:30 | Felipe Mantilla v Tobias Simon | 7-5,7-6 |
| ITF Bulgaria F1 | 2018/05/17 08:35 | Francesco Vilardo v Francesco Ferrari | 4-6,6-0,6-1 |
| ITF Bulgaria F1 | 2018/05/15 07:00 | Francesco Ferrari v Vladislav Melnic | 6-4,6-1 |
| Challenger Savannah Qual | 2018/04/29 15:40 | Martin Cuevas v Francesco Ferrari | 6-3,4-6,6-2 |
| Challenger Savannah Qual | 2018/04/28 16:20 | Andrew Carter v Francesco Ferrari | 2-6,3-6 |
| Challenger Tallahassee Qual | 2018/04/21 15:30 | Francesco Ferrari v Joao Pedro Sorgi | 2-6,3-6 |
| Challenger Sarasota Qual | 2018/04/14 15:30 | Francesco Ferrari v Yoshihito Nishioka | 1-6,3-6 |
| ITF USA F10 Qual | 2018/04/08 18:30 | Francesco Ferrari v Paul Oosterbaan | 3-6,3-6 |
| ITF USA F9 Qual | 2018/04/02 17:05 | Francesco Ferrari v Samuel Shropshire | 3-6,7-6,2-6 |