Stadium: Court C Round: 25 Ground: Hardcourt outdoor
| Challenger Portoroz Qual | 2017/08/07 07:30 | Konecny, Michal v Celebic, Ljubomir | 4-6,3-6 |
| Challenger Portoroz Qual | 2017/08/06 08:50 | Jacopo Berrettini v Celebic, Ljubomir | 1-6,2-6 |
| Challenger Cortina Qual | 2017/07/23 08:00 | Celebic, Ljubomir v Marcora, Roberto | 6-0,6-7,4-6 |
| Challenger Cortina Qual | 2017/07/22 08:00 | Celebic, Ljubomir v Marfia, Matteo | 6-3,6-7,7-5 |
| Challenger Perugia Qual | 2017/07/09 15:05 | Brkic, Tomislav v Celebic, Ljubomir | 6-3,7-6 |
| Challenger Perugia Qual | 2017/07/09 09:30 | Celebic, Ljubomir v Nino Serdarusic | 7-6,1-6,6-1 |
| ITF Italy F20 | 2017/07/07 14:00 | Andrea Collarini v Celebic, Ljubomir | 6-3,6-2 |
| ITF Italy F20 | 2017/07/06 14:00 | Celebic, Ljubomir v Ugo Humbert | 7-6,6-3 |
| Challenger Segovia Qual | 2017/07/31 10:00 | Ortega-Olmedo, Roberto v Vega Hernandez, David | 3-6,0-6 |
| Challenger Astana | 2017/07/20 05:00 | Ortega-Olmedo, Roberto v Aldin Setkic | 2-6,6-7 |
| Challenger Astana | 2017/07/19 05:00 | Evgeny Karlovskiy v Ortega-Olmedo, Roberto | 3-6,5-7 |
| ITF Portugal F11 | 2017/07/15 11:00 | Alex De Minaur v Ortega-Olmedo, Roberto | 6-1,6-3 |
| ITF Portugal F11 | 2017/07/14 11:00 | Ortega-Olmedo, Roberto v Antoine Escoffier | 7-6,6-3 |
| ITF Portugal F11 | 2017/07/12 11:40 | Ortega-Olmedo, Roberto v Bauvy, Romain | 6-0,6-1 |
| ITF Portugal F11 | 2017/07/11 09:30 | Ortega-Olmedo, Roberto v Hernando Ruano, Jorge | 4-6,6-3,6-3 |
| ITF Portugal F10 | 2017/07/09 11:00 | Ortega-Olmedo, Roberto v Frederico Ferreira Silva | 6-3,6-2 |