Stadium: Court 4 Round: 25
| ITF Bosnia and Herzegovina F2 | 2018/05/24 08:00 | Tom Kocevar-Desman v Ljubomir Celebic | 7-5,6-2 |
| ITF Bosnia and Herzegovina F2 | 2018/05/23 10:50 | Sebastian Prechtel v Ljubomir Celebic | 7-5,4-6,3-6 |
| ITF Bosnia and Herzegovina F1 | 2018/05/19 09:45 | Ljubomir Celebic v Nerman Fatic | 4-6,6-4,1-6 |
| ITF Bosnia and Herzegovina F1 | 2018/05/18 08:00 | Ljubomir Celebic v Tomislav Jotovski | 3-6,7-5,6-4 |
| ITF Bosnia and Herzegovina F1 | 2018/05/17 08:00 | Ljubomir Celebic v Jaimee Floyd Angele | 7-5,6-3 |
| ITF Bosnia and Herzegovina F1 | 2018/05/16 09:00 | Ljubomir Celebic v Samuel Hodor | 6-1,6-2 |
| Davis Cup | 2018/04/07 10:05 | Ljubomir Celebic v Matthew Asciak | 6-2,6-2 |
| Davis Cup | 2018/04/06 10:15 | Ljubomir Celebic v Markos Kalovelonis | 6-2,6-1 |
| ITF Argentina F3 | 2018/05/30 13:00 | Tomas Martin Etcheverry v Oscar Jose Gutierrez | 7-6,6-2 |
| ITF Argentina F2 | 2018/05/25 13:00 | Juan Carlos Saez v Oscar Jose Gutierrez | 6-4,4-6,6-4 |
| ITF Argentina F2 | 2018/05/24 14:00 | Eduardo Agustin Torre v Oscar Jose Gutierrez | 4-6,1-6 |
| ITF Argentina F2 | 2018/05/23 13:00 | Felipe Derdoy v Oscar Jose Gutierrez | 0-6,0-6 |
| ITF Argentina F2 | 2018/05/22 13:00 | Mateo Nicolas Martinez v Oscar Jose Gutierrez | 6-4,4-6,2-6 |
| ITF Brazil F4 | 2018/05/17 19:30 | Oscar Jose Gutierrez v Jose Pereira | 2-6,2-6 |
| ITF Brazil F4 | 2018/05/15 13:00 | Oscar Jose Gutierrez v Igor Gimenez | 6-0,7-6 |
| ITF Brazil F3 | 2018/05/13 13:30 | Oscar Jose Gutierrez v Marcelo Zormann | 6-2,6-2 |