Stadium: Court 5 Round: 54 Ground: Hardcourt outdoor
| ITF M25 Hong Kong Qual | 2023/09/03 02:00 | Douglas Geiwald v Young Seok Kim | 1-6,1-6 |
| ITF M15 Hong Kong | 2020/01/06 02:00 | Issei Okamura v Douglas Geiwald | 6-2,6-1 |
| ITF M25 Tay Ninh | 2019/10/01 02:00 | Yurii Dzhavakian v Douglas Geiwald | 6-2,6-2 |
| ITF M25 Tay Ninh | 2019/09/30 04:55 | Jatuporn Nalamphun v Douglas Geiwald | 3-6,0-6 |
| ITF M25 Hong Kong | 2019/06/11 07:00 | Muthu A Senthilkumar v Douglas Geiwald | 6-7,6-1,10-8 |
| ITF M15 Guam | 2019/06/04 00:00 | Douglas Geiwald v Hugo Pontico | 3-6,2-6 |
| ITF M25 Hong Kong | 2018/12/31 02:00 | Yu Hsiou Hsu v Douglas Geiwald | 6-0,6-1 |
| ITF Hong Kong F3 | 2018/12/22 02:00 | Cing-Yang Meng v Douglas Geiwald | 7-6,7-5 |
| ITF M25 Hong Kong | 2024/08/27 04:35 | Yuta Kikuchi v Zhan Zheng | 6-7,1-6 |
| ITF M25 Hong Kong | 2024/08/26 04:30 | Yitao Cao v Zhan Zheng | 3-6,3-6 |
| ITF M25 Yinchuan | 2024/08/14 06:00 | Zhan Zheng v Ajeet Rai | 2-6,1-6 |
| ITF M25 Yinchuan | 2024/08/13 01:00 | Zhan Zheng v Qiulin Wang | 3-6,6-1,10-7 |
| ITF M25 Tianjin | 2024/07/15 00:55 | Qian Sun v Zhan Zheng | 6-2,6-2 |
| ITF M25 Tianjin | 2024/07/14 01:00 | Zhan Zheng v Xinyuan Xie | 6-1,7-5 |
| ITF M25 Tianjin | 2024/07/08 05:20 | Alexander Klintcharov v Zhan Zheng | 6-4,7-5 |
| ITF M25 Tianjin | 2024/07/07 08:05 | Jianhao Sheng v Zhan Zheng | 2-6,5-7 |