Stadium: Center Court Round: 26 Ground: Hardcourt outdoor
| Challenger Kaohsiung | 2019/09/18 03:30 | Tsai, Chang-Lin v Nam, Ji Sung | 4-6,1-6 |
| Coupe Davis | 2019/09/14 04:50 | Zhe Li v Nam, Ji Sung | 6-7,6-7 |
| Jinan, China | 2019/09/03 04:45 | Nedelko, Ivan v Nam, Ji Sung | 4-6,7-5,6-3 |
| Baotou, Chine | 2019/08/29 02:00 | Nam, Ji Sung v Yan Bai | 3-6,6-4,5-7 |
| Baotou, Chine | 2019/08/27 05:40 | Nam, Ji Sung v Arjun Kadhe | 6-3,6-3 |
| Challenger Yokkaichi | 2019/08/09 04:30 | Sho Shimabukuro v Nam, Ji Sung | 6-7,6-3,6-2 |
| Challenger Yokkaichi | 2019/08/08 03:20 | Nam, Ji Sung v Hiroki Moriya | 6-2,5-7,7-6 |
| Challenger Yokkaichi | 2019/08/06 04:35 | Nam, Ji Sung v Jumpei Yamasaki | 6-3,6-2 |
| Challenger Kaohsiung | 2019/09/18 06:05 | Yang, Tsung-Hua v Harris, Andrew | 6-7,3-6 |
| Challenger Shanghai | 2019/09/11 04:05 | Makoto Ochi v Harris, Andrew | 6-4,2-6,6-7 |
| US Open, New York, USA | 2019/08/19 19:00 | Gregoire Barrere v Harris, Andrew | 6-7,7-6,7-6 |
| Challenger Aptos | 2019/08/06 17:00 | Quiroz, Roberto v Harris, Andrew | 6-3,6-3 |
| Challenger Lexington | 2019/07/31 15:45 | Hidalgo, Diego v Harris, Andrew | 6-4,7-6 |
| Challenger Granby | 2019/07/25 14:00 | Harris, Andrew v Steven Diez | 4-6,2-6 |
| Challenger Granby | 2019/07/24 15:35 | Harris, Andrew v Mertens, Yannick | 6-1,6-1 |
| Gatineau, Canada | 2019/07/17 14:00 | Joao Menezes v Harris, Andrew | 4-6,6-3,6-4 |