Stadium: Center Round: 24 Ground: Hardcourt outdoor
| ATP Atlanta | 2019/07/21 18:20 | Viktor Troicki v Ryan Harrison | 6-4,5-7,6-7 |
| French Open | 2019/05/21 09:35 | Ryan Harrison v Adam Pavlasek | 3-6,7-6,6-7 |
| ATP Houston | 2019/04/10 18:05 | Henri Laaksonen v Ryan Harrison | 6-4,7-5 |
| ATP Houston | 2019/04/08 20:00 | Ryan Harrison v Ivo Karlovic | 6-3,6-4 |
| ATP Miami | 2019/03/18 18:20 | Mikael Ymer v Ryan Harrison | 6-1,6-3 |
| Challenger Phoenix | 2019/03/14 19:50 | Ryan Harrison v Lorenzo Sonego | 4-6,2-6 |
| Challenger Phoenix | 2019/03/13 22:05 | Lloyd Harris v Ryan Harrison | 6-3,4-6,4-6 |
| ATP Indian Wells | 2019/03/09 02:15 | Roberto Carballes Baena v Ryan Harrison | 6-3,7-5 |
| Challenger Granby | 2019/07/23 14:00 | Danilo Petrovic v Alexander Sarkissian | 7-6,6-4 |
| Challenger Granby | 2019/07/22 19:25 | Alexander Sarkissian v Nicaise Muamba | 7-5,6-2 |
| Challenger Gatineau | 2019/07/15 18:15 | Ernesto Escobedo v Alexander Sarkissian | 6-1,6-3 |
| Challenger Winnetka | 2019/07/08 15:00 | Alexander Sarkissian v Mohamed Aziz Dougaz | 2-6,2-6 |
| ITF M25 Tulsa | 2019/06/21 15:00 | Sam Riffice v Alexander Sarkissian | 6-2,6-1 |
| ITF M25 Tulsa | 2019/06/20 19:10 | Colin Markes v Alexander Sarkissian | 6-3,1-6,4-6 |
| ITF M25 Tulsa | 2019/06/19 15:00 | Nevin Arimilli v Alexander Sarkissian | 2-6,3-6 |
| Challenger Columbus | 2019/06/12 14:00 | Alexander Sarkissian v Joao Menezes | 3-6,7-6,3-6 |