Head to Head
| Challenger - Jinan | 2019/09/07 06:00 | Zhizhen Zhang v Soonwoo Kwon | 6-4,6-3 |
| 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 - Jinan | 2019/09/08 06:00 | Go Soeda v Zhizhen Zhang | 5-7,6-2,4-6 |
| Challenger - Jinan | 2019/09/07 06:00 | Zhizhen Zhang v Soonwoo Kwon | 6-4,6-3 |
| Challenger - Jinan | 2019/09/06 04:00 | Zhizhen Zhang v Max Purcell | 7-6,6-1 |
| Challenger - Jinan | 2019/09/05 03:00 | Zhizhen Zhang v Chun Hsin Tseng | 6-4,6-3 |
| Challenger - Jinan | 2019/09/04 02:00 | Steven Diez v Zhizhen Zhang | 3-6,3-6 |
| Challenger - Jinan | 2019/09/02 05:05 | Zhizhen Zhang v Jie Cui | 2-6,6-3,6-3 |
| Challenger - Baotou | 2019/08/29 07:25 | Tung-Lin Wu v Zhizhen Zhang | 6-3,6-4 |
| Challenger - Baotou | 2019/08/27 05:40 | Zhizhen Zhang v Baptiste Crepatte | 6-4,6-2 |
Away History
| Challenger - Jinan | 2019/09/07 06:00 | Zhizhen Zhang v Soonwoo Kwon | 6-4,6-3 |
| Challenger - Jinan | 2019/09/06 04:00 | Teymuraz Gabashvili v Soonwoo Kwon | 6-3,3-6,4-6 |
| Challenger - Jinan | 2019/09/05 04:35 | Akira Santillan v Soonwoo Kwon | 6-7,4-6 |
| Challenger - Jinan | 2019/09/04 07:20 | Yecong He v Soonwoo Kwon | 4-6,2-6 |
| Open dos EUA | 2019/08/23 15:00 | Soonwoo Kwon v Steven Diez | 4-6,6-3,6-3 |
| Open dos EUA | 2019/08/21 15:00 | Soonwoo Kwon v Oscar Otte | 6-2,6-4 |
| Open dos EUA | 2019/08/19 19:05 | Soonwoo Kwon v JC Aragone | 6-4,1-6,6-4 |
| ATP - Montreal | 2019/08/05 22:05 | Ilya Ivashka v Soonwoo Kwon | 7-6,6-4 |