Stadium: Center Court Round: 27 Ground: Clay
| Challenger Poznan | 2018/06/06 09:00 | Tomislav Brkic v Mathias Bourgue | 1-6,4-6 |
| Challenger Mestre | 2018/05/24 09:00 | Gian Marco Moroni v Tomislav Brkic | 6-4,6-4 |
| Challenger Mestre | 2018/05/23 10:30 | Martin Cuevas v Tomislav Brkic | 2-6,4-6 |
| ITF Bosnia and Herzegovina F1 | 2018/05/19 08:00 | Tomislav Brkic v Manuel Guinard | 4-6,4-6 |
| ITF Bosnia and Herzegovina F1 | 2018/05/18 09:20 | Tomislav Brkic v Juan Pablo Paz | 6-2,6-3 |
| ITF Bosnia and Herzegovina F1 | 2018/05/17 10:50 | Tomislav Brkic v Domagoj Biljesko | 6-4,3-6,6-3 |
| ITF Bosnia and Herzegovina F1 | 2018/05/16 10:40 | Tomislav Brkic v Aleksandar Tomas | 6-1,6-1 |
| ITF Bosnia and Herzegovina F1 Qual | 2018/05/14 08:00 | Tomislav Brkic v Stefan Latinov | 6-1,6-1 |
| ITF Spain F14 | 2018/06/09 18:30 | Pedro Martinez v Sergio Gutierrez-Ferrol | 6-3,6-7,2-6 |
| ITF Spain F14 | 2018/06/08 14:45 | Raul Brancaccio v Sergio Gutierrez-Ferrol | 3-6,3-6 |
| ITF Spain F14 | 2018/06/07 14:00 | Alejandro Davidovich Fokina v Sergio Gutierrez-Ferrol | 5-7,2-6 |
| ITF Spain F14 | 2018/06/06 12:35 | Javier Barranco Cosano v Sergio Gutierrez-Ferrol | 2-6,2-6 |
| ITF Spain F14 | 2018/06/05 13:00 | Florian Lakat v Sergio Gutierrez-Ferrol | 0-6,1-6 |
| Challenger Mestre | 2018/05/25 09:30 | Sergio Gutierrez-Ferrol v Danilo Petrovic | 6-1,4-6,1-6 |
| 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 |