Stadium: COURT 1 Round: 25 Ground: Hardcourt outdoor
| Challenger Orlando | 2018/12/31 17:15 | Alexander Sarkissian v Gianluca Mager | 6-0,3-6,6-3 |
| Challenger Houston | 2018/11/13 18:10 | Alexander Sarkissian v Bradley Klahn | 1-6,2-6 |
| Challenger Las Vegas | 2018/10/23 18:00 | Alexander Sarkissian v Jason Jung | 6-7,4-6 |
| Challenger Las Vegas | 2018/10/22 18:00 | Tommy Paul v Alexander Sarkissian | 6-3,6-3 |
| Challenger Las Vegas | 2018/10/21 19:15 | Lloyd Glasspool v Alexander Sarkissian | 4-6,4-6 |
| Challenger Las Vegas | 2018/10/20 22:05 | Trevor A Johnson v Alexander Sarkissian | 4-6,2-6 |
| Challenger Fairfield | 2018/10/07 17:00 | Alexander Sarkissian v Tommy Paul | 5-7,2-6 |
| Challenger Fairfield | 2018/10/06 18:55 | Alexander Sarkissian v Zsombor Piros | 6-4,6-2 |
| Challenger Shenzhen 2 | 2018/10/31 05:30 | Blaz Kavcic v Johan Sebastien Tatlot | 6-1,6-2 |
| Challenger Liuzhou | 2018/10/23 06:10 | Johan Sebastien Tatlot v Prajnesh Gunneswaran | 4-6,5-7 |
| Challenger Barcelona | 2018/10/11 11:40 | Roberto Carballes Baena v Johan Sebastien Tatlot | 6-2,6-4 |
| Challenger Barcelona | 2018/10/10 13:45 | Johan Sebastien Tatlot v Bekkhan Atlangeriev | 6-1,6-3 |
| Challenger Florence | 2018/10/03 13:40 | Lorenzo Sonego v Johan Sebastien Tatlot | 6-2,6-4 |
| Challenger Banja Luka | 2018/09/15 12:25 | Johan Sebastien Tatlot v Carlos Berlocq | 2-6,4-6 |
| Challenger Banja Luka | 2018/09/14 13:30 | Johan Sebastien Tatlot v Daniel Gimeno-Traver | 4-6,7-5,7-5 |
| Challenger Banja Luka | 2018/09/12 08:30 | Johan Sebastien Tatlot v Alexander Lazov | 6-3,6-4 |