Stadium: Court 1 Round: 27 Ground: Hardcourt outdoor
| ITF Egypt F8 | 2018/03/08 08:00 | Hossam, Youssef v Katic, Dejan | 6-7,6-4,3-6 |
| ITF Egypt F8 | 2018/03/07 10:55 | Katic, Dejan v Benjamin Lock | 7-6,7-6 |
| Egypt F7, Singles Qualifying | 2018/02/28 08:00 | Eriksson, Markus v Katic, Dejan | 2-6,6-3,6-4 |
| Egypt F6, Singles Qualifying | 2018/02/21 10:25 | Jelle Sels v Katic, Dejan | 6-4,6-2 |
| Egypt F5, Singles Qualifying | 2018/02/15 09:40 | Zsombor Piros v Katic, Dejan | 6-1,7-6 |
| Egypt F5, Singles Qualifying | 2018/02/14 11:10 | Katic, Dejan v Struvay, Eduardo | 6-1,6-0 |
| Tunisia F40, Singles | 2017/12/20 09:35 | Bensoussan, Samuel v Katic, Dejan | 6-3,7-5 |
| ITF Tunisia F39 | 2017/12/13 12:55 | Zucca, Antonio v Katic, Dejan | 1-6,1-6 |
| ITF Egypt F8 | 2018/03/08 08:00 | Nema, Patrik v Olaso, Guillermo | 2-6,3-6 |
| ITF Egypt F8 | 2018/03/06 08:00 | Louis Wessels v Olaso, Guillermo | 2-6,6-3,6-7 |
| San Francisco, USA, Qualifying | 2018/02/04 21:00 | Olaso, Guillermo v Molloy, Jack | 7-5,6-2 |
| San Francisco, USA, Qualifying | 2018/02/03 21:55 | Olaso, Guillermo v Jacob Brumm | 6-3,6-1 |
| Challenger Dallas Qual | 2018/01/29 18:15 | Evgeny Karlovskiy v Olaso, Guillermo | 6-7,6-1,7-6 |
| Challenger Dallas Qual | 2018/01/28 16:00 | Olaso, Guillermo v Heras, Patricio | 6-0,6-4 |
| Challenger Dallas Qual | 2018/01/27 17:20 | Arnau Dachs v Olaso, Guillermo | 3-6,4-6 |
| Newport Beach, USA | 2018/01/23 21:25 | Taylor Fritz v Olaso, Guillermo | 6-3,6-4 |