Stadium: Cancha 3 Round: 26 Ground: Hardcourt outdoor
| Challenger Monterrey | 2017/10/03 19:30 | Sebastian Fanselow v Alexander Sarkissian | 6-3,7-5 |
| Challenger Morelos | 2018/02/20 16:30 | Marcelo Arevalo v Sebastian Fanselow | 4-6,7-5,6-7 |
| Challenger Morelos Qual | 2018/02/18 18:30 | Sebastian Fanselow v Franco Agamenone | 4-6,6-1,6-1 |
| Challenger Morelos Qual | 2018/02/17 22:40 | Sebastian Fanselow v Ruan Roelofse | 6-4,6-3 |
| Challenger Launceston Qual | 2018/02/03 02:10 | Sebastian Fanselow v Benjamin Mitchell | 3-6,6-3,5-7 |
| Challenger Burnie | 2018/01/29 23:00 | Zhe Li v Sebastian Fanselow | 7-5,6-4 |
| Challenger Newport Beach Qual | 2018/01/21 18:55 | Sebastian Fanselow v Cristian Garin | 1-6,4-6 |
| Challenger Newport Beach Qual | 2018/01/20 18:00 | Dennis Nevolo v Sebastian Fanselow | 3-6,1-6 |
| ITF USA F38 | 2017/11/21 15:00 | Strong Kirchheimer v Sebastian Fanselow | 6-3,3-6,6-3 |
| Challenger Morelos | 2018/02/19 21:55 | Alexander Sarkissian v Manuel Sanchez | 6-4,6-4 |
| Challenger Launceston | 2018/02/09 00:00 | Marcel Granollers v Alexander Sarkissian | 6-1,3-6,6-3 |
| Challenger Launceston | 2018/02/07 01:50 | Marinko Matosevic v Alexander Sarkissian | 5-7,3-6 |
| Challenger Launceston | 2018/02/05 02:20 | Alexander Sarkissian v Christian Harrison | 6-3,6-3 |
| Challenger Burnie | 2018/01/29 23:00 | Alexander Sarkissian v Yusuke Takahashi | 7-5,6-7,0-6 |
| Challenger Newport Beach Qual | 2018/01/20 18:00 | Cristian Garin v Alexander Sarkissian | 7-6,6-4 |
| ITF USA F1 | 2018/01/05 18:00 | Alexander Sarkissian v Christopher Eubanks | 7-6,5-7,3-6 |
| ITF USA F1 | 2018/01/04 18:00 | Alexander Sarkissian v Martin Redlicki | 6-1,6-3 |