Stadium: Court 8 Round: 45 Ground: Hardcourt outdoor
| Challenger Fergana Qual | 2018/06/16 06:20 | Roman Safiullin v Mikhail Elgin | 4-6,6-1,6-2 |
| Challenger Shymkent Qual | 2018/06/03 08:00 | Mikhail Elgin v Rubin Statham | 6-2,7-5 |
| Challenger Shymkent Qual | 2018/06/02 06:35 | Maximilian Neuchrist v Mikhail Elgin | 6-3,3-6,4-6 |
| Challenger Samarkand Qual | 2018/05/13 12:20 | Mikhail Elgin v N.Sriram Balaji | 3-6,6-7 |
| Challenger Samarkand Qual | 2018/05/12 09:40 | Shonigmatjon Shofayziyev v Mikhail Elgin | 2-6,4-6 |
| Challenger Qujing Qual | 2018/03/18 05:45 | Yunseong Chung v Mikhail Elgin | 6-3,6-7,6-3 |
| Challenger Qujing Qual | 2018/03/17 03:30 | Mikhail Elgin v Ronald Slobodchikov | 6-0,7-6 |
| Challenger Shenzhen Qual | 2018/03/11 05:10 | Mikhail Elgin v Xin Gao | 3-6,4-6 |
| Challenger Fergana | 2018/06/19 08:10 | Evgeny Karlovskiy v Joao Menezes | 6-2,6-2 |
| Challenger Almaty Qual | 2018/06/11 04:00 | Jurij Rodionov v Joao Menezes | 6-4,0-6,7-6 |
| Challenger Almaty Qual | 2018/06/10 04:30 | Shuichi Sekiguchi v Joao Menezes | 6-3,3-6,6-7 |
| Challenger Almaty Qual | 2018/06/09 04:00 | Mukund Sasikumar v Joao Menezes | 7-6,5-7,0-6 |
| Challenger Shymkent Qual | 2018/06/03 05:50 | Nikola Cacic v Joao Menezes | 6-4,7-6 |
| Challenger Shymkent Qual | 2018/06/02 09:00 | Sagadat Ayap v Joao Menezes | 1-6,1-6 |
| Challenger Vicenza Qual | 2018/05/26 10:40 | Marc Polmans v Joao Menezes | 6-3,7-6 |
| Challenger Mestre Qual | 2018/05/19 12:00 | Joao Menezes v Roberto Marcora | 5-7,3-6 |