Stadium: Indoor Ct3 Round: 26 Ground: Hardcourt outdoor
| Challenger Tallahassee | 2019/04/24 17:35 | Noah Rubin v Thai-Son Kwiatkowski | 6-1,6-2 |
| Challenger Noumea | 2019/01/04 00:45 | Thai-Son Kwiatkowski v Noah Rubin | 5-7,3-6 |
| Challenger Little Rock | 2019/06/05 15:00 | Noah Rubin v Orlando Luz | 6-4,6-3 |
| French Open | 2019/05/20 10:50 | Mikael Torpegaard v Noah Rubin | 6-2,6-2 |
| Challenger Heilbronn | 2019/05/13 11:05 | Arthur De Greef v Noah Rubin | 6-2,6-2 |
| Challenger Savannah | 2019/05/01 18:15 | Noah Rubin v Collin Altamirano | 6-2,2-6,2-6 |
| Challenger Tallahassee | 2019/04/26 22:10 | Noah Rubin v Tennys Sandgren | 5-7,1-6 |
| Challenger Tallahassee | 2019/04/25 16:00 | Noah Rubin v Evgeny Karlovskiy | 3-6,6-4,7-5 |
| Challenger Tallahassee | 2019/04/24 17:35 | Noah Rubin v Thai-Son Kwiatkowski | 6-1,6-2 |
| Challenger Sarasota | 2019/04/17 16:55 | Noah Rubin v Martin Cuevas | 3-6,7-5,6-1 |
| Challenger Little Rock | 2019/06/05 17:00 | Matias Franco Descotte v Thai-Son Kwiatkowski | 4-6,0-6 |
| Challenger Jerusalem | 2019/05/21 08:10 | Arthur Rinderknech v Thai-Son Kwiatkowski | 6-3,6-4 |
| Challenger Savannah | 2019/05/02 15:00 | Thai-Son Kwiatkowski v Corentin Moutet | 4-6,2-6 |
| Challenger Savannah | 2019/05/01 18:25 | Thai-Son Kwiatkowski v Andrea Collarini | 6-3,7-5 |
| Challenger Tallahassee | 2019/04/24 17:35 | Noah Rubin v Thai-Son Kwiatkowski | 6-1,6-2 |
| Challenger Tallahassee | 2019/04/23 18:25 | Benjamin Hassan v Thai-Son Kwiatkowski | 3-6,3-6 |
| Challenger Sarasota | 2019/04/16 15:40 | Santiago Giraldo v Thai-Son Kwiatkowski | 5-7,6-1,6-4 |
| Challenger Sophia Antipolis | 2019/04/04 15:05 | Rudolf Molleker v Thai-Son Kwiatkowski | 6-7,6-3,6-3 |