Stadium: Center Court Round: 26 Ground: Hardcourt outdoor
| Challenger Launceston | 2018/02/06 02:25 | Brydan Klein v Marinko Matosevic | 4-6,6-4,6-7 |
| Challenger Launceston Qual | 2018/02/05 01:05 | Marinko Matosevic v Renta Tokuda | 6-1,4-6,6-4 |
| Challenger Launceston Qual | 2018/02/04 00:25 | Marinko Matosevic v Ken Onishi | 6-4,6-0 |
| Challenger Burnie Qual | 2018/01/26 23:00 | Marinko Matosevic v Alexander Zhurbin | 2-6,4-6 |
| Australian Open Qual | 2018/01/10 00:55 | Marinko Matosevic v Dennis Novikov | 3-6,6-7 |
| Challenger Playford | 2018/01/04 23:30 | Marinko Matosevic v Brayden Schnur | 7-6,5-7,6-7 |
| Challenger Playford | 2018/01/03 01:55 | Marinko Matosevic v Tobias Kamke | 6-2,6-0 |
| Challenger Playford | 2018/01/02 02:55 | Daniil Medvedev v Marinko Matosevic | 7-5,4-6,4-6 |
| 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 |
| ITF USA F1 | 2018/01/02 19:50 | Alexander Sarkissian v JC Aragone | 3-6,7-5,6-1 |
| ITF USA F38 | 2017/11/24 15:00 | Luke Bambridge v Alexander Sarkissian | 7-6,6-2 |
| ITF USA F38 | 2017/11/23 15:00 | Hunter Callahan v Alexander Sarkissian | 2-6,5-7 |