Stadium: Center Round: 45 Ground: Hardcourt outdoor
| Challenger Puerto Vallarta | 2018/05/02 23:45 | Alexander Sarkissian v Santiago Giraldo | 3-6,6-7 |
| Challenger Puerto Vallarta | 2018/05/02 01:00 | Alexander Sarkissian v Gerardo L Villasenor | 2-6,6-3,6-4 |
| Challenger Leon | 2018/04/27 20:55 | Roberto Quiroz v Alexander Sarkissian | 6-4,7-6 |
| Challenger Leon | 2018/04/25 21:55 | Jose Hernandez-Fernandez v Alexander Sarkissian | 6-7,6-7 |
| Challenger Guadalajara | 2018/04/19 21:00 | Marcelo Arevalo v Alexander Sarkissian | 6-3,6-3 |
| Challenger Guadalajara | 2018/04/17 17:00 | Christopher Heyman v Alexander Sarkissian | 4-6,6-7 |
| Challenger San Luis Potosi | 2018/03/28 19:40 | Roberto Cid Subervi v Alexander Sarkissian | 6-2,6-0 |
| ITF USA F8 | 2018/03/23 19:20 | Laurent Lokoli v Alexander Sarkissian | 6-3,6-1 |
| Challenger Puerto Vallarta Qual | 2018/04/28 19:25 | Jose Olivares v Ruan Roelofse | 6-3,7-5 |
| Challenger Taipei | 2018/04/10 06:50 | Ti Chen v Ruan Roelofse | 7-6,6-3 |
| Challenger Taipei Qual | 2018/04/09 03:00 | Ruan Roelofse v Jacob Grills | 6-4,2-6,7-6 |
| Challenger Taipei Qual | 2018/04/07 02:00 | Chen Chang v Ruan Roelofse | 0-6,3-6 |
| ITF USA F8 | 2018/03/23 17:30 | Mathias Bourgue v Ruan Roelofse | 6-3,6-4 |
| ITF USA F8 | 2018/03/20 20:00 | Ruan Roelofse v Isaiah Strode | 6-2,6-4 |
| ITF USA F8 Qual | 2018/03/19 20:20 | Ruan Roelofse v Jake Sands | 1-6,6-4,6-2 |
| ITF USA F8 Qual | 2018/03/17 17:00 | Ruan Roelofse v Alessandro-D Ventre | 6-1,6-2 |