Stadium: Center Court Round: 64 Ground: Hardcourt outdoor
| Challenger Gwangju | 2018/08/16 06:00 | Zihao Xia v Ji Sung Nam | 2-6,3-6 |
| Challenger Gwangju | 2018/08/14 06:30 | Yusuke Takahashi v Zihao Xia | 2-6,6-1,2-6 |
| Challenger Jinan | 2018/08/11 09:45 | James Ward v Zihao Xia | 6-2,6-1 |
| Challenger Jinan | 2018/08/09 07:30 | Di Wu v Zihao Xia | 4-6,2-6 |
| Challenger Chengdu | 2018/08/01 06:15 | Akira Santillan v Zihao Xia | 3-6,6-2,7-5 |
| Challenger Chengdu | 2018/07/31 03:00 | Zihao Xia v Go Soeda | 7-6,6-3 |
| Challenger Bastad Qual | 2018/07/07 10:55 | Zihao Xia v Lukas Klein | 1-6,1-6 |
| Challenger Recanati Qual | 2018/07/01 10:05 | Zihao Xia v Antoine Escoffier | 2-6,3-6 |
| Challenger Kaohsiung | 2018/09/19 05:35 | Prajnesh Gunneswaran v Jurij Rodionov | 3-6,7-5,3-6 |
| Davis Cup | 2018/09/14 15:30 | Dusan Lajovic v Prajnesh Gunneswaran | 6-4,6-3,6-4 |
| Challenger Aptos | 2018/08/11 01:00 | Thanasi Kokkinakis v Prajnesh Gunneswaran | 4-6,6-4,6-3 |
| Challenger Aptos | 2018/08/08 22:55 | JC Aragone v Prajnesh Gunneswaran | 6-4,5-7,4-6 |
| Challenger Aptos | 2018/08/06 21:25 | Brandon Holt v Prajnesh Gunneswaran | 6-4,4-6,2-6 |
| ATP Los Cabos | 2018/08/01 00:00 | Cameron Norrie v Prajnesh Gunneswaran | 6-2,6-2 |
| ATP Los Cabos Qual | 2018/07/29 23:10 | Prajnesh Gunneswaran v Evan Song | 6-3,6-1 |
| ATP Los Cabos Qual | 2018/07/29 00:10 | Prajnesh Gunneswaran v Miguel Angel Reyes-Varela | 6-4,6-0 |