Stadium: Centre Court Round: 25 Ground: Hardcourt outdoor
| Challenger Shenzhen 2 | 2018/10/30 05:10 | Soonwoo Kwon v Tsung-Hua Yang | 5-7,3-6 |
| Challenger Zhangjiagang | 2019/03/18 05:00 | Tsung-Hua Yang v Karim-Mohamed Maamoun | 4-6,2-6 |
| Challenger Yokohama | 2019/03/01 03:30 | Tsung-Hua Yang v Andrew Harris | 5-7,6-7 |
| Challenger Yokohama | 2019/02/28 06:45 | Jurij Rodionov v Tsung-Hua Yang | 4-6,4-6 |
| Challenger Yokohama | 2019/02/27 01:00 | Tsung-Hua Yang v Pedro Cachin | 6-4,6-4 |
| Challenger Yokohama | 2019/02/25 02:40 | Yunseong Chung v Tsung-Hua Yang | 4-6,3-6 |
| Challenger Bangkok 1A | 2019/02/18 10:10 | Tsung-Hua Yang v Saketh Myneni | 3-6,5-7 |
| Challenger Bangkok | 2019/02/12 04:10 | Tsung-Hua Yang v Janko Tipsarevic | 2-6,6-4,4-6 |
| Challenger Chennai | 2019/02/05 07:30 | Andrew Harris v Tsung-Hua Yang | 6-2,6-1 |
| Challenger Zhangjiagang | 2019/03/22 04:15 | Soonwoo Kwon v Lorenzo Giustino | 3-6,2-6 |
| Challenger Zhangjiagang | 2019/03/21 03:00 | Soonwoo Kwon v Filip Peliwo | 6-4,6-2 |
| Challenger Zhangjiagang | 2019/03/20 08:10 | Soonwoo Kwon v Guilherme Clezar | 7-6,6-3 |
| Challenger Shenzhen | 2019/03/15 04:00 | Soonwoo Kwon v Marcos Baghdatis | 4-6,6-3,3-6 |
| Challenger Shenzhen | 2019/03/14 05:15 | Soonwoo Kwon v Max Purcell | 6-3,6-3 |
| Challenger Shenzhen | 2019/03/13 05:40 | Soonwoo Kwon v Uladzimir Ignatik | 6-3,7-5 |
| Challenger Yokohama | 2019/03/03 04:20 | Soonwoo Kwon v Oscar Otte | 7-6,6-3 |
| Challenger Yokohama | 2019/03/02 02:00 | Soonwoo Kwon v Yuichi Sugita | 6-3,6-2 |