Stadium: Court 12 Round: 25 Ground: Hardcourt outdoor
| Challenger Zhuhai Qual | 2018/03/04 08:45 | Kuan-Yi Lee v Xia, Zihao | 6-7,1-6 |
| ITF Hong Kong F3 | 2018/12/25 03:45 | Arthur Rinderknech v Xia, Zihao | 6-7,6-3,6-2 |
| Shenzhen II, Chine | 2018/10/30 02:00 | Xia, Zihao v Fabbiano, Thomas | 3-6,2-6 |
| Liuzhou, Chine | 2018/10/20 06:35 | Sumit Nagal v Xia, Zihao | 6-2,6-2 |
| Ningbo, China | 2018/10/15 04:25 | Hubert Hurkacz v Xia, Zihao | 6-3,7-6 |
| Chengdu, Chine | 2018/09/22 05:00 | Xia, Zihao v Gunneswaran, Prajnesh | 2-6,5-7 |
| Challenger - Gwangju | 2018/08/16 06:00 | Xia, Zihao v Nam, Ji Sung | 2-6,3-6 |
| Challenger - Gwangju | 2018/08/14 06:30 | Yusuke Takahashi v Xia, Zihao | 2-6,6-1,2-6 |
| Jinan, China | 2018/08/11 09:45 | Ward, James v Xia, Zihao | 6-2,6-1 |
| Hong Kong, Simples M-ITF-HKG-04A | 2019/01/01 03:35 | Kuan-Yi Lee v Natthasith Kunsuwan | 6-2,6-3 |
| ITF Egypt F31 | 2018/12/11 08:00 | Kuan-Yi Lee v Arh, Anze | 6-4,6-2 |
| ITF Egypt F30 | 2018/12/04 08:00 | Exposito, Adrian v Kuan-Yi Lee | 2-6,6-3,6-2 |
| ITF Thailand F9 | 2018/11/17 03:00 | Kuan-Yi Lee v Kravchuk, Konstantin | 5-7,2-6 |
| ITF Thailand F9 | 2018/11/15 03:00 | Kuan-Yi Lee v El Midhawy, Adam | 7-6,4-6,7-5 |
| ITF Thailand F9 | 2018/11/14 03:00 | Fufygin, Mikhail v Kuan-Yi Lee | 4-6,5-7 |
| ITF Thailand F9 | 2018/11/13 05:00 | Wei-De Lin v Kuan-Yi Lee | 7-6,4-6,0-6 |
| ITF Thailand F8 | 2018/11/08 07:10 | Kuan-Yi Lee v Kravchuk, Konstantin | 6-4,1-6,4-6 |