Stadium: Court 5 Round: 25 Ground: Hardcourt indoor
| Challenger Las Vegas | 2018/10/20 17:00 | Daniel Nguyen v Thai-Son Kwiatkowski | 2-6,3-6 |
| ITF Canada F7 | 2014/08/16 18:00 | Daniel Nguyen v Thai-Son Kwiatkowski | 2-6,6-3,7-6 |
| ITF USA F16 | 2014/06/18 17:40 | Daniel Nguyen v Thai-Son Kwiatkowski | 3-6,6-3,6-1 |
| Challenger Columbus | 2019/06/10 20:45 | Daniel Nguyen v Gijs Brouwer | 6-4,6-7,7-5 |
| Challenger Little Rock | 2019/06/07 17:00 | Ryan Shane v Daniel Nguyen | 3-6,6-3,6-4 |
| Challenger Little Rock | 2019/06/05 19:00 | Daniel Nguyen v Filip Peliwo | 4-6,6-1,6-0 |
| Challenger Little Rock | 2019/06/04 20:45 | Daniel Nguyen v Kevin King | 6-2,6-7,6-3 |
| Challenger Sarasota | 2019/04/15 18:40 | Daniel Nguyen v Ryan Shane | 6-7,5-7 |
| Challenger Zhangjiagang | 2019/03/19 05:45 | Daniel Nguyen v Lorenzo Giustino | 0-6,3-6 |
| Challenger Zhangjiagang | 2019/03/18 03:55 | Maverick Banes v Daniel Nguyen | 4-6,3-6 |
| Challenger Yokohama | 2019/02/26 03:30 | Yuichi Sugita v Daniel Nguyen | 2-6,6-4,7-5 |
| Challenger Little Rock | 2019/06/08 20:40 | Dudi Sela v Thai-Son Kwiatkowski | 6-3,7-6 |
| Challenger Little Rock | 2019/06/08 15:00 | Thai-Son Kwiatkowski v Christopher Eubanks | 7-6,6-3 |
| Challenger Little Rock | 2019/06/07 19:10 | Noah Rubin v Thai-Son Kwiatkowski | 5-7,5-7 |
| 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 |