Stadium: Cancha 5 Round: 25
| Challenger Mexico City | 2018/04/09 22:25 | Christopher Heyman v Adrian Menendez-Maceiras | 6-1,5-7,2-6 |
| ITF Portugal F6 | 2018/03/29 11:00 | Andres Artunedo Martinavarr v Christopher Heyman | 6-2,6-1 |
| ITF Portugal F6 | 2018/03/28 14:45 | Jaime Pulgar-Garcia v Christopher Heyman | 3-6,2-6 |
| ITF Portugal F6 | 2018/03/27 15:20 | Kenneth Raisma v Christopher Heyman | 4-6,7-6,6-7 |
| ITF Switzerland F2 | 2018/02/14 14:00 | Christopher Heyman v Niels Desein | 6-7,4-6 |
| ITF Switzerland F2 | 2018/02/13 08:00 | Christopher Heyman v Filip Duda | 7-6,6-4 |
| ITF Switzerland F1 | 2018/02/07 12:00 | Christopher Heyman v Gregoire Jacq | 4-6,5-7 |
| ITF Germany F2 | 2018/01/28 13:00 | Christopher Heyman v Sadio Doumbia | 6-7,5-7 |
| 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 |
| ATP Indian Wells Qual | 2018/03/07 00:05 | Alexander Sarkissian v Mackenzie McDonald | 1-6,3-6 |
| Challenger Indian Wells | 2018/02/27 23:20 | Alexander Sarkissian v Darian King | 5-7,6-0,3-6 |
| Challenger Indian Wells Qual | 2018/02/26 00:20 | Alexander Sarkissian v Nicolaas Scholtz | 7-6,3-6,6-3 |
| Challenger Indian Wells Qual | 2018/02/24 22:50 | Alexander Sarkissian v Purav Raja | 6-2,6-1 |