Stadium: Campo 3 Round: 27 Ground: Clay
| Challenger Mestre | 2018/05/24 11:15 | Roberto Marcora v Sergio Gutierrez-Ferrol | 5-7,4-6 |
| Challenger Mestre | 2018/05/23 14:55 | Sergio Gutierrez-Ferrol v Miljan Zekic | 6-1,7-5 |
| ITF Spain F11 | 2018/05/19 09:00 | Sergio Gutierrez-Ferrol v Omar Salman | 3-6,5-7 |
| ITF Spain F11 | 2018/05/18 09:00 | Sergio Gutierrez-Ferrol v Sebastian Korda | 6-7,6-1,6-3 |
| ITF Spain F11 | 2018/05/17 12:25 | Sergio Gutierrez-Ferrol v Mikhail Korovin | 6-2,6-2 |
| ITF Spain F11 | 2018/05/16 13:20 | Sergio Gutierrez-Ferrol v Andrey Chepelev | 6-2,6-3 |
| Challenger Braga | 2018/05/11 13:00 | Gastao Elias v Sergio Gutierrez-Ferrol | 6-3,6-2 |
| Challenger Braga | 2018/05/09 11:00 | Sergio Gutierrez-Ferrol v Gleb Sakharov | 6-3,6-4 |
| Challenger Mestre | 2018/05/24 09:30 | Scott Griekspoor v Danilo Petrovic | 7-6,6-7,1-6 |
| Challenger Mestre | 2018/05/21 12:10 | Andrea Basso v Danilo Petrovic | 6-2,1-6,3-6 |
| Challenger Puerto Vallarta | 2018/05/05 23:00 | Adrian Menendez-Maceiras v Danilo Petrovic | 1-6,7-5,6-3 |
| Challenger Puerto Vallarta | 2018/05/04 23:00 | Danilo Petrovic v Carlos Gomez-Herrera | 6-3,6-3 |
| Challenger Puerto Vallarta | 2018/05/03 21:00 | Danilo Petrovic v Ante Pavic | 6-3,6-2 |
| Challenger Puerto Vallarta | 2018/05/02 19:00 | Danilo Petrovic v Ugo Humbert | 6-4,3-6,6-3 |
| Challenger Puerto Vallarta | 2018/05/01 18:35 | Danilo Petrovic v Gonzalo Escobar | 6-3,1-6,6-2 |
| Challenger Leon | 2018/04/24 17:45 | Jose Hernandez-Fernandez v Danilo Petrovic | 6-3,4-6,6-4 |