Stadium: Cancha Raul Viver Round: 25 Ground: Clay
| Challenger Almaty | 2018/06/14 07:45 | Roberto Cid Subervi v Pedja Krstin | 2-6,7-5,3-6 |
| Challenger Morelos | 2018/02/21 19:45 | Pedja Krstin v Roberto Cid Subervi | 6-7,6-3,6-0 |
| Challenger Milan | 2018/06/30 15:45 | Pedja Krstin v Gianluca Mager | 3-6,1-6 |
| Challenger Milan | 2018/06/27 09:00 | Pedja Krstin v Mathias Bourgue | 6-4,6-4 |
| Challenger Milan | 2018/06/26 09:00 | Pedja Krstin v Pedro Martinez | 7-6,6-0 |
| Challenger Poprad Tatry | 2018/06/19 10:55 | Pedja Krstin v Vaclav Safranek | 5-7,6-4,6-7 |
| Challenger Almaty | 2018/06/16 05:00 | Pedja Krstin v Jurij Rodionov | 5-7,2-6 |
| Challenger Almaty | 2018/06/15 05:00 | Pedja Krstin v Enrique Lopez-Perez | 6-1,6-3 |
| Challenger Almaty | 2018/06/14 07:45 | Roberto Cid Subervi v Pedja Krstin | 2-6,7-5,3-6 |
| Challenger Almaty | 2018/06/13 06:25 | Ante Pavic v Pedja Krstin | 4-6,2-6 |
| Challenger Perugia | 2018/07/10 12:45 | Daniel Gimeno-Traver v Roberto Cid Subervi | 7-5,6-3 |
| Challenger Recanati | 2018/07/02 14:15 | Roberto Cid Subervi v David Guez | 6-4,6-7,2-6 |
| Challenger Fergana | 2018/06/21 06:30 | Saketh Myneni v Roberto Cid Subervi | 6-0,6-4 |
| Challenger Fergana | 2018/06/19 06:25 | Markus Eriksson v Roberto Cid Subervi | 4-6,3-6 |
| Challenger Almaty | 2018/06/14 07:45 | Roberto Cid Subervi v Pedja Krstin | 2-6,7-5,3-6 |
| Challenger Almaty | 2018/06/13 05:00 | Yusuke Takahashi v Roberto Cid Subervi | 1-6,0-6 |
| Challenger Almaty | 2018/06/12 07:40 | Duckhee Lee v Roberto Cid Subervi | 5-7,5-7 |
| Challenger Shymkent | 2018/06/09 05:00 | Yannick Hanfmann v Roberto Cid Subervi | 7-6,4-6,6-2 |