Round: 28 Ground: Hardcourt outdoor
| ITF Japan F4 | 2018/03/30 01:00 | Kuan-Yi Lee v Shintaro Imai | 6-1,2-6,6-3 |
| ITF Japan F4 | 2018/03/29 01:00 | Kuan-Yi Lee v Seong Chan Hong | 6-1,3-6,6-4 |
| ITF Japan F4 | 2018/03/28 04:15 | Zhe Li v Kuan-Yi Lee | 7-5,2-6,1-6 |
| ITF Japan F3 | 2018/03/19 05:20 | Kuan-Yi Lee v Min-Kyu Song | 6-1,3-6,4-6 |
| Challenger Zhuhai Qual | 2018/03/04 08:45 | Kuan-Yi Lee v Zihao Xia | 6-7,1-6 |
| Challenger Zhuhai Qual | 2018/03/03 03:20 | Kuan-Yi Lee v Chukang Wang | 6-2,6-4 |
| Davis Cup | 2018/02/03 13:30 | Hady Habib v Kuan-Yi Lee | 6-4,6-3 |
| ITF China F3 | 2018/01/27 02:00 | Kuan-Yi Lee v Tsung-Hua Yang | 4-6,7-6,1-6 |
| ITF Japan F4 | 2018/03/30 01:00 | Renta Tokuda v Jacob Grills | 6-3,6-2 |
| ITF Japan F4 | 2018/03/29 03:45 | Renta Tokuda v Yuta Shimizu | 6-3,6-1 |
| ITF Japan F4 | 2018/03/27 04:20 | Renta Tokuda v Naoki Nakagawa | 6-2,6-2 |
| Challenger Qujing Qual | 2018/03/18 03:00 | Renta Tokuda v Martins Podzus | 7-6,6-7,3-6 |
| Challenger Shenzhen Qual | 2018/03/12 04:45 | Jason Kubler v Renta Tokuda | 6-1,7-6 |
| Challenger Shenzhen Qual | 2018/03/11 03:10 | Toshihide Matsui v Renta Tokuda | 2-6,3-6 |
| Challenger Zhuhai Qual | 2018/03/05 02:00 | Yusuke Takahashi v Renta Tokuda | 6-4,6-4 |
| Challenger Zhuhai Qual | 2018/03/04 04:35 | Igor Zelenay v Renta Tokuda | 6-7,3-6 |