Stadium: Court 4 Round: 54 Ground: Hardcourt outdoor
| Challenger Tiburon | 2018/09/23 19:20 | Mitchell Krueger v Sarkissian, Alexander | 2-6,4-6 |
| Challenger Tiburon | 2018/09/22 18:15 | Nielsen, Frederik v Sarkissian, Alexander | 4-6,5-7 |
| Challenger Cary | 2018/09/10 18:00 | Sarkissian, Alexander v Joris De Loore | 4-6,4-6 |
| Challenger Cary | 2018/09/09 14:00 | Sarkissian, Alexander v Schneider, Ronnie | 6-2,2-6,6-3 |
| Challenger Cary | 2018/09/08 15:20 | Sarkissian, Alexander v Roelofse, Ruan | 6-4,6-3 |
| Challenger Chicago | 2018/09/06 17:45 | Sarkissian, Alexander v Aragone, JC | 6-2,6-7,6-7 |
| Challenger Chicago | 2018/09/05 15:00 | Seppi, Andreas v Sarkissian, Alexander | 3-6,6-7 |
| Challenger Chicago | 2018/09/03 22:20 | Roelofse, Ruan v Sarkissian, Alexander | 3-6,4-6 |
| Challenger Tiburon | 2018/09/23 17:00 | Gonzalez, Alejandro v Vivero Gonzalez, Pablo | 3-6,1-6 |
| Challenger Tiburon | 2018/09/22 18:20 | Vivero Gonzalez, Pablo v Kaichi Uchida | 4-6,6-4,6-4 |
| Challenger Columbus | 2018/09/15 22:20 | Hiltzik, Jared v Vivero Gonzalez, Pablo | 5-7,6-4,6-4 |
| Challenger Cary | 2018/09/08 16:00 | Strong Kirchheimer v Vivero Gonzalez, Pablo | 6-3,3-6,6-2 |
| Challenger Seville | 2018/09/01 08:00 | Zizou Bergs v Vivero Gonzalez, Pablo | 6-4,6-4 |
| Challenger Mallorca | 2018/08/26 11:15 | Gabashvili, Teimuraz v Vivero Gonzalez, Pablo | 7-5,6-1 |
| ITF Portugal F15 | 2018/08/17 13:05 | Sora Fukuda v Vivero Gonzalez, Pablo | 7-6,2-6,6-4 |
| ITF Portugal F15 | 2018/08/16 10:40 | Alexander Donski v Vivero Gonzalez, Pablo | 3-6,6-7 |