Stadium: Center Court Round: 45 Ground: Hardcourt outdoor
| ITF China F5 | 2018/05/11 06:05 | Jumpei Yamasaki v Kuan-Yi Lee | 6-4,6-4 |
| Challenger Shanghai | 2018/09/08 06:20 | Kuan-Yi Lee v Chen, Ti | 5-7,4-6 |
| ITF Thailand F1 | 2018/08/20 05:10 | Kuan-Yi Lee v Navasirisomboon, Jirat | 3-6,4-6 |
| ITF Women Taipei | 2018/07/22 05:30 | Kuan-Yi Lee v Ashmitha Easwaramurthi | 6-3,3-6,1-6 |
| ITF Hong Kong F1 | 2018/06/25 02:00 | Ho, Denton v Kuan-Yi Lee | 0-6,2-6 |
| ITF Singapore F2 | 2018/05/21 02:00 | Yu Hsiou Hsu v Kuan-Yi Lee | 6-1,6-3 |
| ITF China F6 | 2018/05/18 03:55 | Reinwein, Sami v Kuan-Yi Lee | 6-0,6-4 |
| ITF China F6 | 2018/05/14 05:50 | Tao Mu v Kuan-Yi Lee | 4-6,3-6 |
| ITF China F5 | 2018/05/11 06:05 | Jumpei Yamasaki v Kuan-Yi Lee | 6-4,6-4 |
| Challenger Shanghai | 2018/09/09 03:00 | Tung-Lin Wu v Jumpei Yamasaki | 6-2,6-2 |
| Challenger Shanghai | 2018/09/08 03:00 | Abhinav Sanjeev Shanmugam v Jumpei Yamasaki | 4-6,7-6,3-6 |
| ITF Korea F5 | 2018/08/21 03:00 | Jumpei Yamasaki v Kwon, OH-Hee | 4-6,4-6 |
| ITF Korea F5 | 2018/08/20 01:00 | Jumpei Yamasaki v Park, Jungwon | 6-4,6-0 |
| ITF Korea F5 | 2018/08/18 02:00 | Jumpei Yamasaki v Kim, Dukyoung | 6-4,6-4 |
| Challenger Gwangju Qual | 2018/08/12 01:30 | He, Yecong v Jumpei Yamasaki | 6-2,6-4 |
| Challenger Gwangju Qual | 2018/08/11 01:30 | Fajing Sun v Jumpei Yamasaki | 1-6,6-2,2-6 |
| Challenger Jinan Qual | 2018/08/04 02:00 | Sabanov, Matej v Jumpei Yamasaki | 6-4,6-4 |