Round: 62 Ground: Clay
| ITF Mexico F3 | 2018/05/21 17:00 | Alexander Merino v Edward Bourchier | 6-7,6-3,3-6 |
| ITF Mexico F2 | 2018/05/14 16:00 | Boris Arias v Alexander Merino | 6-4,6-4 |
| ITF Mexico F2 | 2018/05/12 16:00 | Jody Turnquest v Alexander Merino | 2-6,4-6 |
| ITF Mexico F1 | 2018/05/07 15:00 | Alexander Merino v Trey Hilderbrand | 6-7,3-6 |
| ITF Mexico F1 | 2018/05/06 16:00 | Alexander Merino v Marcelo Sepulveda | 6-2,5-7,6-3 |
| Challenger Puerto Vallarta Qual | 2018/04/28 18:15 | Alexander Merino v Boris Arias | 6-3,4-6,2-6 |
| ITF Tunisia F12 | 2018/03/28 08:30 | Alexander Merino v Jordi Munoz-Abreu | 3-6,1-6 |
| ITF Tunisia F11 | 2018/03/18 08:30 | Alexander Merino v Daniele Catini | 7-5,5-7,3-6 |
| ITF Ukraine F3 | 2018/05/20 07:00 | Oleg Besednikov v Yuriy Kryvoy | 3-6,2-6 |
| ITF Ukraine F1 | 2018/05/07 07:00 | Oleg Besednikov v Sagadat Ayap | 1-6,1-6 |
| ITF Russia F3 | 2018/03/11 07:00 | Vladislav Dubinsky v Oleg Besednikov | 6-1,6-1 |
| ITF Russia F2 | 2018/03/04 07:00 | Oleg Besednikov v Alexander Pavlioutchenkov | 1-6,6-1,1-6 |
| ITF Russia F1 | 2018/02/24 09:30 | Ivan Kalinin v Oleg Besednikov | 6-2,6-4 |
| ITF Pakistan F3 | 2017/12/20 05:20 | Oleg Besednikov v Shalva Dzhanashia | 3-6,2-6 |
| ITF Pakistan F3 | 2017/12/19 10:05 | Paramveer Singh Bajwa v Oleg Besednikov | 6-7,2-6 |
| ITF Pakistan F3 | 2017/12/17 04:30 | Hayat Saqib v Oleg Besednikov | 3-6,6-7 |