Round: 62 Ground: Hardcourt outdoor
| ITF USA F21 Qual | 2018/07/28 17:00 | Rowland Phillips v Joaquin Marquez | 6-0,6-3 |
| ITF USA F20 Qual | 2018/07/22 15:00 | Alexander Lebedev v Joaquin Marquez | 7-5,6-3 |
| ITF USA F20 Qual | 2018/07/21 15:00 | Joaquin Marquez v Yang Liu | 6-7,6-3,6-1 |
| ITF Mexico F2 | 2018/05/12 16:00 | Julian Bradley v Joaquin Marquez | 6-4,6-1 |
| ITF Mexico F1 | 2018/05/06 15:00 | Joaquin Marquez v Ivar Jose Aramburu Contreras | 6-7,4-6 |
| ITF Mexico F8 | 2017/12/02 17:00 | Joaquin Marquez v Eduardo Yahir Orozco Rangel | 6-4,6-7,3-6 |
| ITF Mexico F7 | 2017/11/27 15:00 | Joaquin Marquez v Michael-John Every | 4-6,1-6 |
| ITF Mexico F6 | 2017/11/18 16:00 | Joaquin Marquez v Nicholas Reyes | 4-6,3-6 |
| ITF Ecuador F1 | 2018/07/25 19:30 | Facundo Juarez v Sergio Luis H Ramirez | 2-6,6-4,7-6 |
| ITF Ecuador F1 | 2018/07/24 17:20 | Alejandro Mendoza v Sergio Luis H Ramirez | 2-6,2-6 |
| ITF Brazil F2 | 2018/04/29 15:00 | Sergio Luis H Ramirez v Mateus Alves | 3-6,0-6 |
| ITF Brazil F1 | 2018/04/24 23:15 | Marcelo Zormann v Sergio Luis H Ramirez | 7-6,6-1 |
| ITF Turkey F7 | 2018/02/18 06:30 | Collin Altamirano v Sergio Luis H Ramirez | 6-2,6-0 |
| ITF Turkey F6 | 2018/02/10 09:00 | Georgii Kravchenko v Sergio Luis H Ramirez | 6-3,6-4 |
| ITF Turkey F5 | 2018/02/05 07:30 | Sergio Luis H Ramirez v Razvan M Codescu | 3-6,7-6,4-6 |
| ITF Turkey F4 | 2018/01/29 08:00 | Sergio Luis H Ramirez v Ji Hoon Son | 2-6,3-6 |