Stadium: Court 1 Round: 24 Ground: Hardcourt indoor
| Challenger Cleveland | 2019/01/30 15:00 | Mario Vilella Martinez v Filip Peliwo | 2-6,4-6 |
| Challenger Cleveland | 2019/01/29 01:10 | Mario Vilella Martinez v Evgeny Karlovskiy | 6-4,6-3 |
| Challenger Newport Beach | 2019/01/21 22:05 | Mario Vilella Martinez v Enzo Couacaud | 4-6,3-6 |
| Challenger Columbus | 2019/01/10 18:05 | Lucas Miedler v Mario Vilella Martinez | 6-3,6-3 |
| Challenger Columbus | 2019/01/09 18:45 | Joao Menezes v Mario Vilella Martinez | 2-6,6-7 |
| Challenger Buenos Aires | 2018/11/13 19:30 | Carlos Berlocq v Mario Vilella Martinez | 5-7,6-7 |
| Challenger Montevideo | 2018/11/11 15:00 | Mario Vilella Martinez v Carlos Berlocq | 1-6,4-6 |
| Challenger Montevideo | 2018/11/09 23:00 | Mario Vilella Martinez v Martin Cuevas | 6-3,6-4 |
| Challenger Cleveland | 2019/01/28 17:15 | Alexander Sarkissian v Benjamin Bonzi | 2-6,3-6 |
| Challenger Newport Beach | 2019/01/22 18:00 | Alexander Sarkissian v Maxime Cressy | 3-6,0-6 |
| Challenger Orlando | 2019/01/01 21:45 | Alexander Sarkissian v Johan Sebastien Tatlot | 5-7,0-6 |
| 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 |