Stadium: Court 1 Round: 25 Ground: Hardcourt indoor
| Challenger Dallas | 2019/02/05 01:00 | Jelle Sels v Thai-Son Kwiatkowski | 6-4,6-7,4-6 |
| Challenger Newport Beach | 2019/01/22 18:00 | Thai-Son Kwiatkowski v Victor Estrella Burgos | 3-6,4-6 |
| Challenger Da Nang | 2019/01/11 06:00 | Thai-Son Kwiatkowski v Matteo Viola | 7-5,6-7,2-6 |
| Challenger Da Nang | 2019/01/10 06:00 | Tsung-Hua Yang v Thai-Son Kwiatkowski | 4-6,6-7 |
| Challenger Da Nang | 2019/01/09 05:00 | Viktor Durasovic v Thai-Son Kwiatkowski | 5-7,6-7 |
| Challenger Da Nang | 2019/01/07 10:00 | Youssef Hossam v Thai-Son Kwiatkowski | 5-7,4-6 |
| Challenger Noumea | 2019/01/04 00:45 | Thai-Son Kwiatkowski v Noah Rubin | 5-7,3-6 |
| Challenger Noumea | 2019/01/02 23:30 | Tomas Barrios Vera v Thai-Son Kwiatkowski | 3-6,2-6 |
| Challenger Cleveland | 2019/01/30 23:00 | Thomaz Bellucci v Jared Hiltzik | 6-4,4-6,1-6 |
| Challenger Newport Beach | 2019/01/24 18:00 | Thomaz Bellucci v Miomir Kecmanovic | 2-6,6-1,2-6 |
| Challenger Newport Beach | 2019/01/22 20:55 | Dominik Koepfer v Thomaz Bellucci | 4-6,4-6 |
| Challenger Newport Beach | 2019/01/21 19:40 | Gastao Elias v Thomaz Bellucci | 5-7,4-6 |
| Australian Open | 2019/01/09 07:05 | Thomaz Bellucci v Lukas Rosol | 6-2,3-6,4-6 |
| Challenger Buenos Aires | 2018/11/13 16:00 | Thomaz Bellucci v Gianluigi Quinzi | 4-6,6-4,3-6 |
| Challenger Montevideo | 2018/11/05 17:00 | Lorenzo Giustino v Thomaz Bellucci | 6-3,6-3 |
| Challenger Guayaquil | 2018/10/31 20:00 | Thomaz Bellucci v Guido Andreozzi | 3-6,2-6 |