Head to Head
| Challenger Shenzhen 2 | 2017/10/30 04:30 | Zhizhen Zhang v Soonwoo Kwon | 6-3,3-6,5-7 |
| Challenger Chengdu | 2017/07/31 02:00 | Zhizhen Zhang v Soonwoo Kwon | 6-7,6-4,6-1 |
Home History
| Challenger Nanchang | 2019/04/26 03:00 | Ramkumar Ramanathan v Zhizhen Zhang | 6-3,6-0 |
| Challenger Nanchang | 2019/04/25 04:20 | Zhizhen Zhang v Enrique Lopez-Perez | 6-2,6-4 |
| Challenger Nanchang | 2019/04/23 05:00 | Saketh Myneni v Zhizhen Zhang | 4-6,4-6 |
| Challenger Anning | 2019/04/18 03:00 | Ramkumar Ramanathan v Zhizhen Zhang | 6-3,3-6,6-3 |
| Challenger Anning | 2019/04/16 05:50 | Zhizhen Zhang v Aleksandr Nedovyesov | 7-6,2-6,6-2 |
| Challenger Anning | 2019/04/15 03:45 | Akira Santillan v Zhizhen Zhang | 7-5,6-7,0-6 |
| Challenger Zhangjiagang | 2019/03/20 08:35 | Blaz Rola v Zhizhen Zhang | 6-2,6-4 |
| Challenger Zhangjiagang | 2019/03/18 07:20 | Runhao Hua v Zhizhen Zhang | 4-6,3-6 |
Away History
| Challenger Busan | 2019/05/08 05:05 | Tsung-Hua Yang v Soonwoo Kwon | 6-3,7-6 |
| Challenger Seoul | 2019/05/05 03:00 | Soonwoo Kwon v Max Purcell | 7-5,7-5 |
| Challenger Seoul | 2019/05/04 03:00 | Soonwoo Kwon v Tung-Lin Wu | 7-6,6-3 |
| Challenger Seoul | 2019/05/03 04:10 | Yasutaka Uchiyama v Soonwoo Kwon | 4-6,7-6,5-7 |
| Challenger Seoul | 2019/05/02 05:35 | Soonwoo Kwon v Evgeny Donskoy | 7-6,6-3 |
| Challenger Seoul | 2019/04/30 02:00 | Soonwoo Kwon v Shintaro Imai | 6-3,6-2 |
| Challenger Taipei | 2019/04/13 05:00 | Soonwoo Kwon v Dennis Novak | 3-6,4-6 |
| Challenger Taipei | 2019/04/12 04:00 | Soonwoo Kwon v Ramkumar Ramanathan | 7-6,6-3 |