Stadium: Estadio Puerto Vallarta Round: 25 Ground: Hardcourt outdoor
| 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 |
| ITF USA F8 | 2018/03/20 22:20 | Trent Bryde v Alexander Sarkissian | 1-6,2-6 |
| ITF USA F7 | 2018/03/15 00:00 | Borna Gojo v Alexander Sarkissian | 4-6,6-1,6-4 |
| Challenger Guadalajara | 2018/04/17 19:40 | Gerardo L Villasenor v Christopher Eubanks | 1-6,6-3,6-7 |
| Davis Cup | 2018/04/07 17:00 | Gerardo L Villasenor v Juan Pablo Varillas | 6-4,7-6 |
| Challenger San Luis Potosi | 2018/03/27 18:00 | Gerardo L Villasenor v Pedja Krstin | 2-6,3-6 |
| Challenger Morelos | 2018/02/22 00:40 | Gerardo L Villasenor v Kevin King | 1-6,1-6 |
| Challenger Morelos | 2018/02/20 20:35 | Mario Vilella Martinez v Gerardo L Villasenor | 4-6,6-4,4-6 |
| Challenger Morelos Qual | 2018/02/18 18:40 | Gerardo L Villasenor v Evan Song | 1-6,6-3,6-4 |
| Challenger Morelos Qual | 2018/02/17 20:00 | JC Aragone v Gerardo L Villasenor | 6-7,6-1,5-7 |
| Challenger Morelos Qual | 2018/02/17 15:00 | Gerardo L Villasenor v Max Schnur | 6-3,7-6 |